Get Core SQLServer Health Metrics using Dynamic SQL
| October 11, 2022 | Baseline-SQL-Server, Linked Server, Performance Tuning, SQLMonitor, TSQL | No Comments
Recently, on his blog, Steve Jones invited the SQL community to write blog posts sharing their way of using SQL dynamically.
Accepting the invitation, in this blog, I am going to talk about how I am using Dynamic SQL to monitor the core health metrics of baselined SQL Server instances as part of the open-source monitoring tool SQLMonitor.
In SQLMonitor, on the central/inventory server, we have one view dbo.vw_all_server_info which is populated every 20 seconds with the core SQL Server metrics of each SQL Server instance we baseline. The job which takes care of this task is (dba) Get-AllServerInfo with the below 2-step codes –
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-- Stable Info if ( (select count(1) from dbo.all_server_stable_info) <> (select count(distinct sql_instance) from dbo.instance_details) ) or ( (select max(collection_time) from dbo.all_server_stable_info) < dateadd(minute, -30, SYSDATETIME()) ) begin exec dbo.usp_GetAllServerInfo @result_to_table = 'dbo.all_server_stable_info', @output = 'srv_name, at_server_name, machine_name, server_name, ip, domain, host_name, product_version, edition, sqlserver_start_time_utc, total_physical_memory_kb, os_start_time_utc, cpu_count, scheduler_count, major_version_number, minor_version_number'; end |
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-- Volatile Info exec dbo.usp_GetAllServerInfo @result_to_table = 'dbo.all_server_volatile_info', @output = 'srv_name, os_cpu, sql_cpu, pcnt_kernel_mode, page_faults_kb, blocked_counts, blocked_duration_max_seconds, available_physical_memory_kb, system_high_memory_signal_state, physical_memory_in_use_kb, memory_grants_pending, connection_count, active_requests_count, waits_per_core_per_minute'; |
If we look at the above 2 job step code blocks, we may guess by now, the base of this core SQL Server health metrics collection is stored procedure dbo.usp_GetAllServerInfo. Below is the result of the stored procedure in general when no parameters are used while calling –
To put it in simple terms, the stored procedure dbo.usp_GetAllServerInfo, when executed, connects to each SQL Server instance baselined with SQLMonitor, and gathers a total of 25-26 core health metrics in an efficient manner without burdening each server. Below are the key features/requirement of this procedure –
- Actively query specific servers, a list of servers, or all servers depending on the parameter values. Controlled by parameter @servers.
- Query specific health metrics like cpu cores, sql schedulers, % cpu utilization, memory grant pending etc depending on that what metrics are requested. Controlled by parameter @output.
- When a table name is passed in parameter @result_to_table, then create the table if not exists, and populate it with the required metrics for mentioned servers.
- Debug procedure with @verbose in the event of some bug/analysis requirement.
- The flexibility of adding more metrics collection easily without disrupting existing metric collection.
- Advanced enough to work in mixed environments where the inventory/central server and each server being baselined could be in different zones, domains, SQL Service Accounts, etc.
Let’s dig deeper into the code of dbo.usp_GetAllServerInfo in order to understand how we are utilizing Linked Server with Dynamic SQL to meet the above requirements.
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IF APP_NAME() = 'Microsoft SQL Server Management Studio - Query' BEGIN SET QUOTED_IDENTIFIER OFF; SET ANSI_PADDING ON; SET CONCAT_NULL_YIELDS_NULL ON; SET ANSI_WARNINGS ON; SET NUMERIC_ROUNDABORT OFF; SET ARITHABORT ON; END GO IF DB_NAME() = 'master' raiserror ('Kindly execute all queries in [DBA] database', 20, -1) with log; go IF NOT EXISTS (SELECT * FROM INFORMATION_SCHEMA.ROUTINES WHERE ROUTINE_NAME = 'usp_GetAllServerInfo') EXEC ('CREATE PROC dbo.usp_GetAllServerInfo AS SELECT ''stub version, to be replaced''') GO -- DROP PROCEDURE dbo.usp_GetAllServerInfo go ALTER PROCEDURE dbo.usp_GetAllServerInfo ( @servers varchar(max) = null, /* comma separated list of servers to query */ @blocked_threshold_seconds int = 60, @output nvarchar(max) = null, /* comma separated list of columns required in output */ @result_to_table nvarchar(125) = null, /* temp table that should be populated with result */ @verbose tinyint = 0 /* display debugging messages. 0 = No messages. 1 = Only print messages. 2 = Print & Table Results */ ) WITH EXECUTE AS OWNER --,RECOMPILE AS BEGIN /* Version: 1.0.2 Date: 2022-09-14 declare @srv_name varchar(125) = convert(varchar,serverproperty('MachineName')); exec dbo.usp_GetAllServerInfo @servers = @srv_name --exec dbo.usp_GetAllServerInfo @servers = 'Workstation,SqlPractice,SqlMonitor' ,@output = 'srv_name, os_start_time_utc' --exec dbo.usp_GetAllServerInfo @servers = 'SQLMONITOR' ,@output = 'system_high_memory_signal_state' https://stackoverflow.com/questions/10191193/how-to-test-linkedservers-connectivity-in-tsql exec dbo.usp_GetAllServerInfo @servers = 'SqlPractice' ,@output = 'memory_grants_pending' ,@verbose = 2 */ SET NOCOUNT ON; SET TRANSACTION ISOLATION LEVEL READ UNCOMMITTED; SET LOCK_TIMEOUT 60000; -- 60 seconds DECLARE @_tbl_servers table (srv_name varchar(125)); DECLARE @_tbl_output_columns table (column_name varchar(125)); DECLARE @_linked_server_failed bit = 0; DECLARE @_sql NVARCHAR(max); DECLARE @_isLocalHost bit = 0; create table #server_details ( srv_name varchar(125), at_server_name varchar(125), machine_name varchar(125), server_name varchar(125), ip varchar(30), domain varchar(125), host_name varchar(125), product_version varchar(30), edition varchar(50), sqlserver_start_time_utc datetime2, os_cpu decimal(20,2), sql_cpu decimal(20,2), pcnt_kernel_mode decimal(20,2), page_faults_kb decimal(20,2), blocked_counts int, blocked_duration_max_seconds bigint, total_physical_memory_kb bigint, available_physical_memory_kb bigint, system_high_memory_signal_state varchar(20), physical_memory_in_use_kb decimal(20,2), memory_grants_pending int, connection_count int, active_requests_count int, waits_per_core_per_minute decimal(20,2), os_start_time_utc datetime2, cpu_count smallint, scheduler_count smallint, major_version_number smallint, minor_version_number smallint ); declare @_srv_name nvarchar (125); declare @_at_server_name varchar (125); declare @_machine_name varchar (125); declare @_server_name varchar (125); declare @_ip varchar (30); declare @_domain varchar (125); declare @_host_name varchar (125); declare @_product_version varchar (30); declare @_edition varchar(50); declare @_sqlserver_start_time_utc datetime2; declare @_os_cpu decimal(20,2); declare @_sql_cpu decimal(20,2); declare @_pcnt_kernel_mode decimal(20,2); declare @_page_faults_kb decimal(20,2); declare @_blocked_counts int; declare @_blocked_duration_max_seconds bigint; declare @_total_physical_memory_kb bigint; declare @_available_physical_memory_kb bigint; declare @_system_high_memory_signal_state varchar (20); declare @_physical_memory_in_use_kb decimal(20,2); declare @_memory_grants_pending int; declare @_connection_count int; declare @_active_requests_count int; declare @_waits_per_core_per_minute decimal(20,2); declare @_os_start_time_utc datetime2; declare @_cpu_count int; declare @_scheduler_count int; declare @_major_version_number smallint; declare @_minor_version_number smallint; declare @_int_variable int; declare @_smallint_variable smallint; declare @_tinyint_variable tinyint; declare @_bigint_variable bigint; declare @_result table (col_bigint bigint null, col_int int null, col_varchar varchar(125) null, col_decimal decimal(20,2) null, col_datetime datetime2 null); IF @verbose >= 1 PRINT 'Extracting server names from @servers ('+@servers+') parameter value..'; ;WITH t1(srv_name, [Servers]) AS ( SELECT CAST(LEFT(@servers, CHARINDEX(',',@servers+',')-1) AS VARCHAR(500)) as srv_name, STUFF(@servers, 1, CHARINDEX(',',@servers+','), '') as [Servers] -- UNION ALL -- SELECT CAST(LEFT([Servers], CHARINDEX(',',[Servers]+',')-1) AS VARChAR(500)) AS srv_name, STUFF([Servers], 1, CHARINDEX(',',[Servers]+','), '') as [Servers] FROM t1 WHERE [Servers] > '' ) INSERT @_tbl_servers (srv_name) SELECT ltrim(rtrim(srv_name)) FROM t1 OPTION (MAXRECURSION 32000); IF @verbose >= 2 BEGIN SELECT @_int_variable = COUNT(1) FROM @_tbl_servers; PRINT 'No of servers to process => '+CONVERT(varchar,@_int_variable)+''; SELECT [RunningQuery] = 'select * from @_tbl_servers', * FROM @_tbl_servers; END -- Extract output column names ;WITH t1(column_name, [Columns]) AS ( SELECT CAST(LEFT(@output, CHARINDEX(',',@output+',')-1) AS VARCHAR(500)) as column_name, STUFF(@output, 1, CHARINDEX(',',@output+','), '') as [Columns] -- UNION ALL -- SELECT CAST(LEFT([Columns], CHARINDEX(',',[Columns]+',')-1) AS VARChAR(500)) AS column_name, STUFF([Columns], 1, CHARINDEX(',',[Columns]+','), '') as [Columns] FROM t1 WHERE [Columns] > '' ) INSERT @_tbl_output_columns (column_name) SELECT ltrim(rtrim(column_name)) FROM t1 OPTION (MAXRECURSION 32000); IF @verbose >= 2 BEGIN SELECT @_int_variable = COUNT(1) FROM @_tbl_output_columns; PRINT 'No of columns to return in result => '+CONVERT(varchar,@_int_variable)+''; SELECT [RunningQuery] = 'select * from @_tbl_output_columns', * FROM @_tbl_output_columns; END DECLARE cur_servers CURSOR LOCAL FORWARD_ONLY FOR select distinct srvname = sql_instance from dbo.instance_details where is_available = 1 and (@servers is null or sql_instance in (select srv_name from @_tbl_servers)); OPEN cur_servers; FETCH NEXT FROM cur_servers INTO @_srv_name; --set quoted_identifier off; WHILE @@FETCH_STATUS = 0 BEGIN if @verbose = 1 print char(10)+'***** Looping through '+quotename(@_srv_name)+' *******'; set @_linked_server_failed = 0; set @_at_server_name = NULL; set @_machine_name = NULL; set @_server_name = NULL; set @_ip = NULL; set @_domain = NULL; set @_host_name = NULL; set @_product_version = NULL; set @_edition = NULL; set @_sqlserver_start_time_utc = NULL; set @_os_cpu = NULL; set @_sql_cpu = NULL; set @_pcnt_kernel_mode = NULL; set @_page_faults_kb = NULL; set @_blocked_counts = NULL; set @_blocked_duration_max_seconds = NULL; set @_total_physical_memory_kb = NULL; set @_available_physical_memory_kb = NULL; set @_system_high_memory_signal_state = NULL; set @_physical_memory_in_use_kb = NULL; set @_memory_grants_pending = NULL; set @_connection_count = NULL; set @_active_requests_count = NULL; set @_waits_per_core_per_minute = NULL; set @_os_start_time_utc = NULL; set @_cpu_count = NULL; set @_scheduler_count = NULL; set @_major_version_number = NULL; set @_minor_version_number = NULL; -- If not local server if (CONVERT(varchar,SERVERPROPERTY('MachineName')) = @_srv_name) set @_isLocalHost = 1 else begin set @_isLocalHost = 0 begin try --set @_sql = "SELECT @@servername as srv_name;"; --set @_sql = 'select * from openquery(' + QUOTENAME(@_srv_name) + ', "'+ @_sql + '")'; exec sys.sp_testlinkedserver @_srv_name; end try begin catch print ' ERROR => Linked Server '+quotename(@_srv_name)+' not connecting.'; set @_linked_server_failed = 1; --fetch next from cur_servers into @_srv_name; --continue; end catch; end -- [@@SERVERNAME] => Create SQL Statement to Execute if @_linked_server_failed = 0 and (@output is null or exists (select * from @_tbl_output_columns where column_name = 'at_server_name')) begin delete from @_result; set @_sql = "SELECT [at_server_name] = CONVERT(varchar, @@SERVERNAME )"; -- Decorate for remote query if LinkedServer if @_isLocalHost = 0 set @_sql = 'select * from openquery(' + QUOTENAME(@_srv_name) + ', "'+ @_sql + '")'; begin try insert @_result (col_varchar) exec (@_sql); -- set @_ip select @_at_server_name = col_varchar from @_result; end try begin catch -- print @_sql; print char(10)+char(13)+'Error occurred while executing below query on '+quotename(@_srv_name)+char(10)+' '+@_sql; print ' ErrorNumber => '+convert(varchar,ERROR_NUMBER()); print ' ErrorSeverity => '+convert(varchar,ERROR_SEVERITY()); print ' ErrorState => '+convert(varchar,ERROR_STATE()); --print ' ErrorProcedure => '+ERROR_PROCEDURE(); print ' ErrorLine => '+convert(varchar,ERROR_LINE()); print ' ErrorMessage => '+ERROR_MESSAGE(); end catch end -- [machine_name] => Create SQL Statement to Execute if @_linked_server_failed = 0 and (@output is null or exists (select * from @_tbl_output_columns where column_name = 'machine_name')) begin delete from @_result; set @_sql = "select CONVERT(varchar,SERVERPROPERTY('MachineName')) as [machine_name]"; -- Decorate for remote query if LinkedServer if @_isLocalHost = 0 set @_sql = 'select * from openquery(' + QUOTENAME(@_srv_name) + ', "'+ @_sql + '")'; begin try insert @_result (col_varchar) exec (@_sql); -- set @_ip select @_machine_name = col_varchar from @_result; end try begin catch -- print @_sql; print char(10)+char(13)+'Error occurred while executing below query on '+quotename(@_srv_name)+char(10)+' '+@_sql; print ' ErrorNumber => '+convert(varchar,ERROR_NUMBER()); print ' ErrorSeverity => '+convert(varchar,ERROR_SEVERITY()); print ' ErrorState => '+convert(varchar,ERROR_STATE()); --print ' ErrorProcedure => '+ERROR_PROCEDURE(); print ' ErrorLine => '+convert(varchar,ERROR_LINE()); print ' ErrorMessage => '+ERROR_MESSAGE(); end catch end -- [server_name] => Create SQL Statement to Execute if @_linked_server_failed = 0 and (@output is null or exists (select * from @_tbl_output_columns where column_name = 'server_name')) begin delete from @_result; set @_sql = "select CONVERT(varchar,SERVERPROPERTY('ServerName')) as [server_name]"; -- Decorate for remote query if LinkedServer if @_isLocalHost = 0 set @_sql = 'select * from openquery(' + QUOTENAME(@_srv_name) + ', "'+ @_sql + '")'; begin try insert @_result (col_varchar) exec (@_sql); -- set @_ip select @_server_name = col_varchar from @_result; end try begin catch -- print @_sql; print char(10)+char(13)+'Error occurred while executing below query on '+quotename(@_srv_name)+char(10)+' '+@_sql; print ' ErrorNumber => '+convert(varchar,ERROR_NUMBER()); print ' ErrorSeverity => '+convert(varchar,ERROR_SEVERITY()); print ' ErrorState => '+convert(varchar,ERROR_STATE()); --print ' ErrorProcedure => '+ERROR_PROCEDURE(); print ' ErrorLine => '+convert(varchar,ERROR_LINE()); print ' ErrorMessage => '+ERROR_MESSAGE(); end catch end -- [ip] => Create SQL Statement to Execute if @_linked_server_failed = 0 and (@output is null or exists (select * from @_tbl_output_columns where column_name = 'ip')) begin delete from @_result; set @_sql = "SELECT [ip] = CONVERT(varchar, CONNECTIONPROPERTY('local_net_address') )"; -- Decorate for remote query if LinkedServer if @_isLocalHost = 0 set @_sql = 'select * from openquery(' + QUOTENAME(@_srv_name) + ', "'+ @_sql + '")'; begin try insert @_result (col_varchar) exec (@_sql); -- set @_ip select @_ip = col_varchar from @_result; end try begin catch -- print @_sql; print char(10)+char(13)+'Error occurred while executing below query on '+quotename(@_srv_name)+char(10)+' '+@_sql; print ' ErrorNumber => '+convert(varchar,ERROR_NUMBER()); print ' ErrorSeverity => '+convert(varchar,ERROR_SEVERITY()); print ' ErrorState => '+convert(varchar,ERROR_STATE()); --print ' ErrorProcedure => '+ERROR_PROCEDURE(); print ' ErrorLine => '+convert(varchar,ERROR_LINE()); print ' ErrorMessage => '+ERROR_MESSAGE(); end catch end -- [domain] => Create SQL Statement to Execute if @_linked_server_failed = 0 and ( @output is null or exists (select * from @_tbl_output_columns where column_name = 'domain') ) begin delete from @_result; set @_sql = "select default_domain() as [domain];"; -- Decorate for remote query if LinkedServer if @_isLocalHost = 0 set @_sql = 'select * from openquery(' + QUOTENAME(@_srv_name) + ', "'+ @_sql + '")'; begin try insert @_result (col_varchar) exec (@_sql); -- set @_ip select @_domain = col_varchar from @_result; end try begin catch -- print @_sql; print char(10)+char(13)+'Error occurred while executing below query on '+quotename(@_srv_name)+char(10)+' '+@_sql; print ' ErrorNumber => '+convert(varchar,ERROR_NUMBER()); print ' ErrorSeverity => '+convert(varchar,ERROR_SEVERITY()); print ' ErrorState => '+convert(varchar,ERROR_STATE()); --print ' ErrorProcedure => '+ERROR_PROCEDURE(); print ' ErrorLine => '+convert(varchar,ERROR_LINE()); print ' ErrorMessage => '+ERROR_MESSAGE(); end catch end -- [host_name] => Create SQL Statement to Execute if @_linked_server_failed = 0 and ( @output is null or exists (select * from @_tbl_output_columns where column_name = 'host_name') ) begin delete from @_result; set @_sql = "select CONVERT(varchar,SERVERPROPERTY('ComputerNamePhysicalNetBIOS')) as [host_name]"; -- Decorate for remote query if LinkedServer if @_isLocalHost = 0 set @_sql = 'select * from openquery(' + QUOTENAME(@_srv_name) + ', "'+ @_sql + '")'; begin try insert @_result (col_varchar) exec (@_sql); -- set @_ip select @_host_name = col_varchar from @_result; end try begin catch -- print @_sql; print char(10)+char(13)+'Error occurred while executing below query on '+quotename(@_srv_name)+char(10)+' '+@_sql; print ' ErrorNumber => '+convert(varchar,ERROR_NUMBER()); print ' ErrorSeverity => '+convert(varchar,ERROR_SEVERITY()); print ' ErrorState => '+convert(varchar,ERROR_STATE()); --print ' ErrorProcedure => '+ERROR_PROCEDURE(); print ' ErrorLine => '+convert(varchar,ERROR_LINE()); print ' ErrorMessage => '+ERROR_MESSAGE(); end catch end -- [product_version] => Create SQL Statement to Execute if @_linked_server_failed = 0 and ( @output is null or exists (select * from @_tbl_output_columns where column_name = 'product_version') ) begin delete from @_result; set @_sql = "select CONVERT(varchar,SERVERPROPERTY('ProductVersion')) as [product_version]"; -- Decorate for remote query if LinkedServer if @_isLocalHost = 0 set @_sql = 'select * from openquery(' + QUOTENAME(@_srv_name) + ', "'+ @_sql + '")'; begin try insert @_result (col_varchar) exec (@_sql); -- set @_ip select @_product_version = col_varchar from @_result; end try begin catch -- print @_sql; print char(10)+char(13)+'Error occurred while executing below query on '+quotename(@_srv_name)+char(10)+' '+@_sql; print ' ErrorNumber => '+convert(varchar,ERROR_NUMBER()); print ' ErrorSeverity => '+convert(varchar,ERROR_SEVERITY()); print ' ErrorState => '+convert(varchar,ERROR_STATE()); --print ' ErrorProcedure => '+ERROR_PROCEDURE(); print ' ErrorLine => '+convert(varchar,ERROR_LINE()); print ' ErrorMessage => '+ERROR_MESSAGE(); end catch end -- [edition] => Create SQL Statement to Execute if @_linked_server_failed = 0 and ( @output is null or exists (select * from @_tbl_output_columns where column_name = 'edition') ) begin delete from @_result; set @_sql = "select CONVERT(varchar,SERVERPROPERTY('Edition')) as [Edition]"; -- Decorate for remote query if LinkedServer if @_isLocalHost = 0 set @_sql = 'select * from openquery(' + QUOTENAME(@_srv_name) + ', "'+ @_sql + '")'; begin try insert @_result (col_varchar) exec (@_sql); -- set @_ip select @_edition = col_varchar from @_result; end try begin catch -- print @_sql; print char(10)+char(13)+'Error occurred while executing below query on '+quotename(@_srv_name)+char(10)+' '+@_sql; print ' ErrorNumber => '+convert(varchar,ERROR_NUMBER()); print ' ErrorSeverity => '+convert(varchar,ERROR_SEVERITY()); print ' ErrorState => '+convert(varchar,ERROR_STATE()); --print ' ErrorProcedure => '+ERROR_PROCEDURE(); print ' ErrorLine => '+convert(varchar,ERROR_LINE()); print ' ErrorMessage => '+ERROR_MESSAGE(); end catch end -- [sqlserver_start_time_utc] => Create SQL Statement to Execute if @_linked_server_failed = 0 and ( @output is null or exists (select * from @_tbl_output_columns where column_name = 'sqlserver_start_time_utc') ) begin delete from @_result; set @_sql = "select [sqlserver_start_time_utc] = DATEADD(mi, DATEDIFF(mi, getdate(), getutcdate()), sqlserver_start_time) from sys.dm_os_sys_info as osi"; -- Decorate for remote query if LinkedServer if @_isLocalHost = 0 set @_sql = 'select * from openquery(' + QUOTENAME(@_srv_name) + ', "'+ @_sql + '")'; begin try insert @_result (col_datetime) exec (@_sql); -- set @_ip select @_sqlserver_start_time_utc = col_datetime from @_result; end try begin catch -- print @_sql; print char(10)+char(13)+'Error occurred while executing below query on '+quotename(@_srv_name)+char(10)+' '+@_sql; print ' ErrorNumber => '+convert(varchar,ERROR_NUMBER()); print ' ErrorSeverity => '+convert(varchar,ERROR_SEVERITY()); print ' ErrorState => '+convert(varchar,ERROR_STATE()); --print ' ErrorProcedure => '+ERROR_PROCEDURE(); print ' ErrorLine => '+convert(varchar,ERROR_LINE()); print ' ErrorMessage => '+ERROR_MESSAGE(); end catch end -- [os_cpu] => Create SQL Statement to Execute if @_linked_server_failed = 0 and ( @output is null or exists (select * from @_tbl_output_columns where column_name = 'os_cpu') ) begin delete from @_result; set @_sql = " SET QUOTED_IDENTIFIER ON; SELECT system_cpu FROM ( SELECT DATEADD (ms, -1 * (ts_now - [timestamp]), GETDATE()) AS event_time ,DATEADD(mi, DATEDIFF(mi, getdate(), getutcdate()), DATEADD (ms, -1 * (ts_now - [timestamp]), GETDATE())) AS event_time_utc ,100-record.value('(Record/SchedulerMonitorEvent/SystemHealth/SystemIdle)[1]', 'int') AS system_cpu ,record.value('(Record/SchedulerMonitorEvent/SystemHealth/ProcessUtilization)[1]', 'int') AS sql_cpu ,record.value('(Record/SchedulerMonitorEvent/SystemHealth/SystemIdle)[1]', 'int') AS idle_system_cpu ,record.value('(Record/SchedulerMonitorEvent/SystemHealth/UserModeTime)[1]', 'bigint')/10000 AS user_mode_time_ms ,record.value('(Record/SchedulerMonitorEvent/SystemHealth/KernelModeTime)[1]', 'bigint')/10000 AS kernel_mode_time_ms ,record.value('(Record/SchedulerMonitorEvent/SystemHealth/PageFaults)[1]', 'bigint')*8.0 AS page_faults_kb ,record FROM ( SELECT TOP 1 timestamp, CONVERT (xml, record) AS record, cpu_ticks / (cpu_ticks/ms_ticks) as ts_now FROM sys.dm_os_ring_buffers orb cross apply sys.dm_os_sys_info osi WHERE ring_buffer_type = 'RING_BUFFER_SCHEDULER_MONITOR' AND record LIKE '%<SystemHealth>%' ORDER BY [timestamp] DESC ) AS rd ) as t; " -- Decorate for remote query if LinkedServer if @_isLocalHost = 0 set @_sql = 'select * from openquery(' + QUOTENAME(@_srv_name) + ', "'+ @_sql + '")'; begin try insert @_result (col_decimal) exec (@_sql); -- set @_ip select @_os_cpu = col_decimal from @_result; end try begin catch -- print @_sql; print char(10)+char(13)+'Error occurred while executing below query on '+quotename(@_srv_name)+char(10)+' '+@_sql; print ' ErrorNumber => '+convert(varchar,ERROR_NUMBER()); print ' ErrorSeverity => '+convert(varchar,ERROR_SEVERITY()); print ' ErrorState => '+convert(varchar,ERROR_STATE()); --print ' ErrorProcedure => '+ERROR_PROCEDURE(); print ' ErrorLine => '+convert(varchar,ERROR_LINE()); print ' ErrorMessage => '+ERROR_MESSAGE(); end catch end -- [sql_cpu] => Create SQL Statement to Execute if @_linked_server_failed = 0 and ( @output is null or exists (select * from @_tbl_output_columns where column_name = 'sql_cpu') ) begin delete from @_result; set @_sql = " SET QUOTED_IDENTIFIER ON; SELECT sql_cpu FROM ( SELECT DATEADD (ms, -1 * (ts_now - [timestamp]), GETDATE()) AS event_time ,DATEADD(mi, DATEDIFF(mi, getdate(), getutcdate()), DATEADD (ms, -1 * (ts_now - [timestamp]), GETDATE())) AS event_time_utc ,100-record.value('(Record/SchedulerMonitorEvent/SystemHealth/SystemIdle)[1]', 'int') AS system_cpu ,record.value('(Record/SchedulerMonitorEvent/SystemHealth/ProcessUtilization)[1]', 'int') AS sql_cpu ,record.value('(Record/SchedulerMonitorEvent/SystemHealth/SystemIdle)[1]', 'int') AS idle_system_cpu ,record.value('(Record/SchedulerMonitorEvent/SystemHealth/UserModeTime)[1]', 'bigint')/10000 AS user_mode_time_ms ,record.value('(Record/SchedulerMonitorEvent/SystemHealth/KernelModeTime)[1]', 'bigint')/10000 AS kernel_mode_time_ms ,record.value('(Record/SchedulerMonitorEvent/SystemHealth/PageFaults)[1]', 'bigint')*8.0 AS page_faults_kb ,record FROM ( SELECT TOP 1 timestamp, CONVERT (xml, record) AS record, cpu_ticks / (cpu_ticks/ms_ticks) as ts_now FROM sys.dm_os_ring_buffers orb cross apply sys.dm_os_sys_info osi WHERE ring_buffer_type = 'RING_BUFFER_SCHEDULER_MONITOR' AND record LIKE '%<SystemHealth>%' ORDER BY [timestamp] DESC ) AS rd ) as t; " -- Decorate for remote query if LinkedServer if @_isLocalHost = 0 set @_sql = 'select * from openquery(' + QUOTENAME(@_srv_name) + ', "'+ @_sql + '")'; begin try insert @_result (col_decimal) exec (@_sql); -- set @_ip select @_sql_cpu = col_decimal from @_result; end try begin catch -- print @_sql; print char(10)+char(13)+'Error occurred while executing below query on '+quotename(@_srv_name)+char(10)+' '+@_sql; print ' ErrorNumber => '+convert(varchar,ERROR_NUMBER()); print ' ErrorSeverity => '+convert(varchar,ERROR_SEVERITY()); print ' ErrorState => '+convert(varchar,ERROR_STATE()); --print ' ErrorProcedure => '+ERROR_PROCEDURE(); print ' ErrorLine => '+convert(varchar,ERROR_LINE()); print ' ErrorMessage => '+ERROR_MESSAGE(); end catch end -- [pcnt_kernel_mode] => Create SQL Statement to Execute if @_linked_server_failed = 0 and ( @output is null or exists (select * from @_tbl_output_columns where column_name = 'pcnt_kernel_mode') ) begin delete from @_result; set @_sql = " SET QUOTED_IDENTIFIER ON; SELECT kernel_mode_time_ms * 100 / (user_mode_time_ms + kernel_mode_time_ms) as [pcnt_kernel_mode] FROM ( SELECT DATEADD (ms, -1 * (ts_now - [timestamp]), GETDATE()) AS event_time ,DATEADD(mi, DATEDIFF(mi, getdate(), getutcdate()), DATEADD (ms, -1 * (ts_now - [timestamp]), GETDATE())) AS event_time_utc ,100-record.value('(Record/SchedulerMonitorEvent/SystemHealth/SystemIdle)[1]', 'int') AS system_cpu ,record.value('(Record/SchedulerMonitorEvent/SystemHealth/ProcessUtilization)[1]', 'int') AS sql_cpu ,record.value('(Record/SchedulerMonitorEvent/SystemHealth/SystemIdle)[1]', 'int') AS idle_system_cpu ,record.value('(Record/SchedulerMonitorEvent/SystemHealth/UserModeTime)[1]', 'bigint')/10000 AS user_mode_time_ms ,record.value('(Record/SchedulerMonitorEvent/SystemHealth/KernelModeTime)[1]', 'bigint')/10000 AS kernel_mode_time_ms ,record.value('(Record/SchedulerMonitorEvent/SystemHealth/PageFaults)[1]', 'bigint')*8.0 AS page_faults_kb ,record FROM ( SELECT TOP 1 timestamp, CONVERT (xml, record) AS record, cpu_ticks / (cpu_ticks/ms_ticks) as ts_now FROM sys.dm_os_ring_buffers orb cross apply sys.dm_os_sys_info osi WHERE ring_buffer_type = 'RING_BUFFER_SCHEDULER_MONITOR' AND record LIKE '%<SystemHealth>%' ORDER BY [timestamp] DESC ) AS rd ) as t; " -- Decorate for remote query if LinkedServer if @_isLocalHost = 0 set @_sql = 'select * from openquery(' + QUOTENAME(@_srv_name) + ', "'+ @_sql + '")'; begin try insert @_result (col_decimal) exec (@_sql); -- set @_ip select @_pcnt_kernel_mode = col_decimal from @_result; end try begin catch -- print @_sql; print char(10)+char(13)+'Error occurred while executing below query on '+quotename(@_srv_name)+char(10)+' '+@_sql; print ' ErrorNumber => '+convert(varchar,ERROR_NUMBER()); print ' ErrorSeverity => '+convert(varchar,ERROR_SEVERITY()); print ' ErrorState => '+convert(varchar,ERROR_STATE()); --print ' ErrorProcedure => '+ERROR_PROCEDURE(); print ' ErrorLine => '+convert(varchar,ERROR_LINE()); print ' ErrorMessage => '+ERROR_MESSAGE(); end catch end -- [page_faults_kb] => Create SQL Statement to Execute if @_linked_server_failed = 0 and ( @output is null or exists (select * from @_tbl_output_columns where column_name = 'page_faults_kb') ) begin delete from @_result; set @_sql = " SET QUOTED_IDENTIFIER ON; SELECT page_faults_kb FROM ( SELECT DATEADD (ms, -1 * (ts_now - [timestamp]), GETDATE()) AS event_time ,DATEADD(mi, DATEDIFF(mi, getdate(), getutcdate()), DATEADD (ms, -1 * (ts_now - [timestamp]), GETDATE())) AS event_time_utc ,100-record.value('(Record/SchedulerMonitorEvent/SystemHealth/SystemIdle)[1]', 'int') AS system_cpu ,record.value('(Record/SchedulerMonitorEvent/SystemHealth/ProcessUtilization)[1]', 'int') AS sql_cpu ,record.value('(Record/SchedulerMonitorEvent/SystemHealth/SystemIdle)[1]', 'int') AS idle_system_cpu ,record.value('(Record/SchedulerMonitorEvent/SystemHealth/UserModeTime)[1]', 'bigint')/10000 AS user_mode_time_ms ,record.value('(Record/SchedulerMonitorEvent/SystemHealth/KernelModeTime)[1]', 'bigint')/10000 AS kernel_mode_time_ms ,record.value('(Record/SchedulerMonitorEvent/SystemHealth/PageFaults)[1]', 'bigint')*8.0 AS page_faults_kb ,record FROM ( SELECT TOP 1 timestamp, CONVERT (xml, record) AS record, cpu_ticks / (cpu_ticks/ms_ticks) as ts_now FROM sys.dm_os_ring_buffers orb cross apply sys.dm_os_sys_info osi WHERE ring_buffer_type = 'RING_BUFFER_SCHEDULER_MONITOR' AND record LIKE '%<SystemHealth>%' ORDER BY [timestamp] DESC ) AS rd ) as t; " -- Decorate for remote query if LinkedServer if @_isLocalHost = 0 set @_sql = 'select * from openquery(' + QUOTENAME(@_srv_name) + ', "'+ @_sql + '")'; begin try insert @_result (col_decimal) exec (@_sql); -- set @_ip select @_page_faults_kb = col_decimal from @_result; end try begin catch -- print @_sql; print char(10)+char(13)+'Error occurred while executing below query on '+quotename(@_srv_name)+char(10)+' '+@_sql; print ' ErrorNumber => '+convert(varchar,ERROR_NUMBER()); print ' ErrorSeverity => '+convert(varchar,ERROR_SEVERITY()); print ' ErrorState => '+convert(varchar,ERROR_STATE()); --print ' ErrorProcedure => '+ERROR_PROCEDURE(); print ' ErrorLine => '+convert(varchar,ERROR_LINE()); print ' ErrorMessage => '+ERROR_MESSAGE(); end catch end -- [blocked_counts] => Create SQL Statement to Execute if @_linked_server_failed = 0 and ( @output is null or exists (select * from @_tbl_output_columns where column_name = 'blocked_counts') ) begin delete from @_result; set @_sql = " --SET QUOTED_IDENTIFIER ON; select count(*) as blocked_counts --, max(wait_time)/1000 as wait_time_s from sys.dm_exec_requests r with (nolock) where r.blocking_session_id <> 0 and wait_time >= ("+convert(varchar,@blocked_threshold_seconds)+"*1000) -- Over 60 seconds " -- Decorate for remote query if LinkedServer if @_isLocalHost = 0 set @_sql = 'select * from openquery(' + QUOTENAME(@_srv_name) + ', "'+ @_sql + '")'; begin try insert @_result (col_int) exec (@_sql); -- set @_ip select @_blocked_counts = col_int from @_result; end try begin catch -- print @_sql; print char(10)+char(13)+'Error occurred while executing below query on '+quotename(@_srv_name)+char(10)+' '+@_sql; print ' ErrorNumber => '+convert(varchar,ERROR_NUMBER()); print ' ErrorSeverity => '+convert(varchar,ERROR_SEVERITY()); print ' ErrorState => '+convert(varchar,ERROR_STATE()); --print ' ErrorProcedure => '+ERROR_PROCEDURE(); print ' ErrorLine => '+convert(varchar,ERROR_LINE()); print ' ErrorMessage => '+ERROR_MESSAGE(); end catch end -- [blocked_duration_max_seconds] => Create SQL Statement to Execute if @_linked_server_failed = 0 and ( @output is null or exists (select * from @_tbl_output_columns where column_name = 'blocked_duration_max_seconds') ) begin delete from @_result; set @_sql = " --SET QUOTED_IDENTIFIER ON; declare @_wait_time_s bigint = 0; select @_wait_time_s = floor(max(wait_time)/1000) --,count(*) as blocked_counts from sys.dm_exec_requests r with (nolock) where r.blocking_session_id <> 0 and wait_time >= ("+convert(varchar,@blocked_threshold_seconds)+"*1000) -- Over 60 seconds select isnull(@_wait_time_s,0) as [blocked_duration_max_seconds]; " -- Decorate for remote query if LinkedServer if @_isLocalHost = 0 set @_sql = 'select * from openquery(' + QUOTENAME(@_srv_name) + ', "'+ @_sql + '")'; begin try insert @_result (col_bigint) exec (@_sql); -- set @_ip select @_blocked_duration_max_seconds = col_bigint from @_result; end try begin catch -- print @_sql; print char(10)+char(13)+'Error occurred while executing below query on '+quotename(@_srv_name)+char(10)+' '+@_sql; print ' ErrorNumber => '+convert(varchar,ERROR_NUMBER()); print ' ErrorSeverity => '+convert(varchar,ERROR_SEVERITY()); print ' ErrorState => '+convert(varchar,ERROR_STATE()); --print ' ErrorProcedure => '+ERROR_PROCEDURE(); print ' ErrorLine => '+convert(varchar,ERROR_LINE()); print ' ErrorMessage => '+ERROR_MESSAGE(); end catch end -- [total_physical_memory_kb] => Create SQL Statement to Execute if @_linked_server_failed = 0 and ( @output is null or exists (select * from @_tbl_output_columns where column_name = 'total_physical_memory_kb') ) begin delete from @_result; set @_sql = " --SET QUOTED_IDENTIFIER ON; select osm.total_physical_memory_kb --,osm.available_physical_memory_kb --,case when system_high_memory_signal_state = 1 then 'High' else 'Low' end as [Memory State] --,opm.physical_memory_in_use_kb --,opm.memory_utilization_percentage from sys.dm_os_sys_memory osm, sys.dm_os_process_memory opm; " -- Decorate for remote query if LinkedServer if @_isLocalHost = 0 set @_sql = 'select * from openquery(' + QUOTENAME(@_srv_name) + ', "'+ @_sql + '")'; begin try insert @_result (col_bigint) exec (@_sql); -- set @_ip select @_total_physical_memory_kb = col_bigint from @_result; end try begin catch -- print @_sql; print char(10)+char(13)+'Error occurred while executing below query on '+quotename(@_srv_name)+char(10)+' '+@_sql; print ' ErrorNumber => '+convert(varchar,ERROR_NUMBER()); print ' ErrorSeverity => '+convert(varchar,ERROR_SEVERITY()); print ' ErrorState => '+convert(varchar,ERROR_STATE()); --print ' ErrorProcedure => '+ERROR_PROCEDURE(); print ' ErrorLine => '+convert(varchar,ERROR_LINE()); print ' ErrorMessage => '+ERROR_MESSAGE(); end catch end -- [available_physical_memory_kb] => Create SQL Statement to Execute if @_linked_server_failed = 0 and ( @output is null or exists (select * from @_tbl_output_columns where column_name = 'available_physical_memory_kb') ) begin delete from @_result; set @_sql = " --SET QUOTED_IDENTIFIER ON; select --osm.total_physical_memory_kb osm.available_physical_memory_kb --,case when system_high_memory_signal_state = 1 then 'High' else 'Low' end as [Memory State] --,opm.physical_memory_in_use_kb --,opm.memory_utilization_percentage from sys.dm_os_sys_memory osm, sys.dm_os_process_memory opm; " -- Decorate for remote query if LinkedServer if @_isLocalHost = 0 set @_sql = 'select * from openquery(' + QUOTENAME(@_srv_name) + ', "'+ @_sql + '")'; begin try insert @_result (col_bigint) exec (@_sql); -- set @_ip select @_available_physical_memory_kb = col_bigint from @_result; end try begin catch -- print @_sql; print char(10)+char(13)+'Error occurred while executing below query on '+quotename(@_srv_name)+char(10)+' '+@_sql; print ' ErrorNumber => '+convert(varchar,ERROR_NUMBER()); print ' ErrorSeverity => '+convert(varchar,ERROR_SEVERITY()); print ' ErrorState => '+convert(varchar,ERROR_STATE()); --print ' ErrorProcedure => '+ERROR_PROCEDURE(); print ' ErrorLine => '+convert(varchar,ERROR_LINE()); print ' ErrorMessage => '+ERROR_MESSAGE(); end catch end -- [system_high_memory_signal_state] => Create SQL Statement to Execute if @_linked_server_failed = 0 and ( @output is null or exists (select * from @_tbl_output_columns where column_name = 'system_high_memory_signal_state') ) begin delete from @_result; set @_sql = " --SET QUOTED_IDENTIFIER ON; select --osm.total_physical_memory_kb --osm.available_physical_memory_kb case when system_high_memory_signal_state = 1 then 'High' else 'Low' end as [Memory State] --,opm.physical_memory_in_use_kb --,opm.memory_utilization_percentage from sys.dm_os_sys_memory osm, sys.dm_os_process_memory opm; " -- Decorate for remote query if LinkedServer if @_isLocalHost = 0 set @_sql = 'select * from openquery(' + QUOTENAME(@_srv_name) + ', "'+ @_sql + '")'; begin try insert @_result (col_varchar) exec (@_sql); -- set @_ip select @_system_high_memory_signal_state = col_varchar from @_result; end try begin catch -- print @_sql; print char(10)+char(13)+'Error occurred while executing below query on '+quotename(@_srv_name)+char(10)+' '+@_sql; print ' ErrorNumber => '+convert(varchar,ERROR_NUMBER()); print ' ErrorSeverity => '+convert(varchar,ERROR_SEVERITY()); print ' ErrorState => '+convert(varchar,ERROR_STATE()); --print ' ErrorProcedure => '+ERROR_PROCEDURE(); print ' ErrorLine => '+convert(varchar,ERROR_LINE()); print ' ErrorMessage => '+ERROR_MESSAGE(); end catch end -- [physical_memory_in_use_kb] => Create SQL Statement to Execute if @_linked_server_failed = 0 and ( @output is null or exists (select * from @_tbl_output_columns where column_name = 'physical_memory_in_use_kb') ) begin delete from @_result; set @_sql = " --SET QUOTED_IDENTIFIER ON; select --osm.total_physical_memory_kb --osm.available_physical_memory_kb --,case when system_high_memory_signal_state = 1 then 'High' else 'Low' end as [Memory State] opm.physical_memory_in_use_kb --,opm.memory_utilization_percentage from sys.dm_os_sys_memory osm, sys.dm_os_process_memory opm; " -- Decorate for remote query if LinkedServer if @_isLocalHost = 0 set @_sql = 'select * from openquery(' + QUOTENAME(@_srv_name) + ', "'+ @_sql + '")'; begin try insert @_result (col_decimal) exec (@_sql); -- set @_ip select @_physical_memory_in_use_kb = col_decimal from @_result; end try begin catch -- print @_sql; print char(10)+char(13)+'Error occurred while executing below query on '+quotename(@_srv_name)+char(10)+' '+@_sql; print ' ErrorNumber => '+convert(varchar,ERROR_NUMBER()); print ' ErrorSeverity => '+convert(varchar,ERROR_SEVERITY()); print ' ErrorState => '+convert(varchar,ERROR_STATE()); --print ' ErrorProcedure => '+ERROR_PROCEDURE(); print ' ErrorLine => '+convert(varchar,ERROR_LINE()); print ' ErrorMessage => '+ERROR_MESSAGE(); end catch end -- [memory_grants_pending] => Create SQL Statement to Execute if @_linked_server_failed = 0 and ( @output is null or exists (select * from @_tbl_output_columns where column_name = 'memory_grants_pending') ) begin delete from @_result; set @_sql = " --SET QUOTED_IDENTIFIER ON; declare @object_name varchar(255); set @object_name = (case when @@SERVICENAME = 'MSSQLSERVER' then 'SQLServer' else 'MSSQL$'+@@SERVICENAME end); SELECT cntr_value FROM sys.dm_os_performance_counters WITH (NOLOCK) WHERE 1=1 and [object_name] like (@object_name+':Memory Manager%') AND counter_name = N'Memory Grants Pending' " -- Decorate for remote query if LinkedServer if @_isLocalHost = 0 set @_sql = 'select * from openquery(' + QUOTENAME(@_srv_name) + ', "'+ @_sql + '")'; begin try insert @_result (col_int) exec (@_sql); -- set @_ip select @_memory_grants_pending = col_int from @_result; end try begin catch -- print @_sql; print char(10)+char(13)+'Error occurred while executing below query on '+quotename(@_srv_name)+char(10)+' '+@_sql; print ' ErrorNumber => '+convert(varchar,ERROR_NUMBER()); print ' ErrorSeverity => '+convert(varchar,ERROR_SEVERITY()); print ' ErrorState => '+convert(varchar,ERROR_STATE()); --print ' ErrorProcedure => '+ERROR_PROCEDURE(); print ' ErrorLine => '+convert(varchar,ERROR_LINE()); print ' ErrorMessage => '+ERROR_MESSAGE(); end catch end -- [connection_count] => Create SQL Statement to Execute if @_linked_server_failed = 0 and ( @output is null or exists (select * from @_tbl_output_columns where column_name = 'connection_count') ) begin delete from @_result; set @_sql = " --SET QUOTED_IDENTIFIER ON; select count(*) as counts from sys.dm_exec_connections with (nolock) " -- Decorate for remote query if LinkedServer if @_isLocalHost = 0 set @_sql = 'select * from openquery(' + QUOTENAME(@_srv_name) + ', "'+ @_sql + '")'; begin try insert @_result (col_int) exec (@_sql); -- set @_ip select @_connection_count = col_int from @_result; end try begin catch -- print @_sql; print char(10)+char(13)+'Error occurred while executing below query on '+quotename(@_srv_name)+char(10)+' '+@_sql; print ' ErrorNumber => '+convert(varchar,ERROR_NUMBER()); print ' ErrorSeverity => '+convert(varchar,ERROR_SEVERITY()); print ' ErrorState => '+convert(varchar,ERROR_STATE()); --print ' ErrorProcedure => '+ERROR_PROCEDURE(); print ' ErrorLine => '+convert(varchar,ERROR_LINE()); print ' ErrorMessage => '+ERROR_MESSAGE(); end catch end -- [active_requests_count] => Create SQL Statement to Execute if @_linked_server_failed = 0 and ( @output is null or exists (select * from @_tbl_output_columns where column_name = 'active_requests_count') ) begin delete from @_result; set @_sql = " SET NOCOUNT ON; exec usp_active_requests_count; " -- Decorate for remote query if LinkedServer if @_isLocalHost = 0 set @_sql = 'select * from openquery(' + QUOTENAME(@_srv_name) + ', "'+ @_sql + '")'; begin try insert @_result (col_int) exec (@_sql); -- set @_ip select @_active_requests_count = col_int from @_result; end try begin catch -- print @_sql; print char(10)+char(13)+'Error occurred while executing below query on '+quotename(@_srv_name)+char(10)+' '+@_sql; print ' ErrorNumber => '+convert(varchar,ERROR_NUMBER()); print ' ErrorSeverity => '+convert(varchar,ERROR_SEVERITY()); print ' ErrorState => '+convert(varchar,ERROR_STATE()); --print ' ErrorProcedure => '+ERROR_PROCEDURE(); print ' ErrorLine => '+convert(varchar,ERROR_LINE()); print ' ErrorMessage => '+ERROR_MESSAGE(); end catch end -- [waits_per_core_per_minute] => Create SQL Statement to Execute if @_linked_server_failed = 0 and ( @output is null or exists (select * from @_tbl_output_columns where column_name = 'waits_per_core_per_minute') ) begin delete from @_result; set @_sql = " SET NOCOUNT ON; exec usp_waits_per_core_per_minute; " -- Decorate for remote query if LinkedServer if @_isLocalHost = 0 set @_sql = 'select * from openquery(' + QUOTENAME(@_srv_name) + ', "'+ @_sql + '")'; begin try insert @_result (col_decimal) exec (@_sql); -- set @_ip select @_waits_per_core_per_minute = col_decimal from @_result; end try begin catch -- print @_sql; print char(10)+char(13)+'Error occurred while executing below query on '+quotename(@_srv_name)+char(10)+' '+@_sql; print ' ErrorNumber => '+convert(varchar,ERROR_NUMBER()); print ' ErrorSeverity => '+convert(varchar,ERROR_SEVERITY()); print ' ErrorState => '+convert(varchar,ERROR_STATE()); --print ' ErrorProcedure => '+ERROR_PROCEDURE(); print ' ErrorLine => '+convert(varchar,ERROR_LINE()); print ' ErrorMessage => '+ERROR_MESSAGE(); end catch end -- [os_start_time_utc] => Create SQL Statement to Execute if @_linked_server_failed = 0 and ( @output is null or exists (select * from @_tbl_output_columns where column_name = 'os_start_time_utc') ) begin delete from @_result; set @_sql = "select [os_start_time_utc] = DATEADD(mi, DATEDIFF(mi, getdate(), getutcdate()), dateadd(SECOND,-osi.ms_ticks/1000,GETDATE())) from sys.dm_os_sys_info as osi"; -- Decorate for remote query if LinkedServer if @_isLocalHost = 0 set @_sql = 'select * from openquery(' + QUOTENAME(@_srv_name) + ', "'+ @_sql + '")'; begin try insert @_result (col_datetime) exec (@_sql); -- set @_ip select @_os_start_time_utc = col_datetime from @_result; end try begin catch -- print @_sql; print char(10)+char(13)+'Error occurred while executing below query on '+quotename(@_srv_name)+char(10)+' '+@_sql; print ' ErrorNumber => '+convert(varchar,ERROR_NUMBER()); print ' ErrorSeverity => '+convert(varchar,ERROR_SEVERITY()); print ' ErrorState => '+convert(varchar,ERROR_STATE()); --print ' ErrorProcedure => '+ERROR_PROCEDURE(); print ' ErrorLine => '+convert(varchar,ERROR_LINE()); print ' ErrorMessage => '+ERROR_MESSAGE(); end catch end -- [cpu_count] => Create SQL Statement to Execute if @_linked_server_failed = 0 and ( @output is null or exists (select * from @_tbl_output_columns where column_name = 'cpu_count') ) begin delete from @_result; set @_sql = "select osi.cpu_count /* osi.scheduler_count */ from sys.dm_os_sys_info as osi"; -- Decorate for remote query if LinkedServer if @_isLocalHost = 0 set @_sql = 'select * from openquery(' + QUOTENAME(@_srv_name) + ', "'+ @_sql + '")'; begin try insert @_result (col_int) exec (@_sql); -- set @_ip select @_cpu_count = col_int from @_result; end try begin catch -- print @_sql; print char(10)+char(13)+'Error occurred while executing below query on '+quotename(@_srv_name)+char(10)+' '+@_sql; print ' ErrorNumber => '+convert(varchar,ERROR_NUMBER()); print ' ErrorSeverity => '+convert(varchar,ERROR_SEVERITY()); print ' ErrorState => '+convert(varchar,ERROR_STATE()); --print ' ErrorProcedure => '+ERROR_PROCEDURE(); print ' ErrorLine => '+convert(varchar,ERROR_LINE()); print ' ErrorMessage => '+ERROR_MESSAGE(); end catch end -- [scheduler_count] => Create SQL Statement to Execute if @_linked_server_failed = 0 and ( @output is null or exists (select * from @_tbl_output_columns where column_name = 'scheduler_count') ) begin delete from @_result; set @_sql = "select osi.scheduler_count from sys.dm_os_sys_info as osi"; -- Decorate for remote query if LinkedServer if @_isLocalHost = 0 set @_sql = 'select * from openquery(' + QUOTENAME(@_srv_name) + ', "'+ @_sql + '")'; begin try insert @_result (col_int) exec (@_sql); -- set @_ip select @_scheduler_count = col_int from @_result; end try begin catch -- print @_sql; print char(10)+char(13)+'Error occurred while executing below query on '+quotename(@_srv_name)+char(10)+' '+@_sql; print ' ErrorNumber => '+convert(varchar,ERROR_NUMBER()); print ' ErrorSeverity => '+convert(varchar,ERROR_SEVERITY()); print ' ErrorState => '+convert(varchar,ERROR_STATE()); --print ' ErrorProcedure => '+ERROR_PROCEDURE(); print ' ErrorLine => '+convert(varchar,ERROR_LINE()); print ' ErrorMessage => '+ERROR_MESSAGE(); end catch end -- [major_version_number] => Create SQL Statement to Execute if @_linked_server_failed = 0 and ( @output is null or exists (select * from @_tbl_output_columns where column_name = 'major_version_number') ) begin delete from @_result; set @_sql = " declare @server_major_version_number tinyint; SET @server_major_version_number = CONVERT(tinyint, SERVERPROPERTY('ProductMajorVersion')) if @server_major_version_number is null begin ;with t_versions as ( select CONVERT(varchar,SERVERPROPERTY('ProductVersion')) as ProductVersion ,LEFT(CONVERT(varchar,SERVERPROPERTY('ProductVersion')), CHARINDEX('.',CONVERT(varchar,SERVERPROPERTY('ProductVersion')))-1) AS MajorVersion ) select @server_major_version_number = MajorVersion from t_versions; end select [@server_major_version_number] = @server_major_version_number; "; -- Decorate for remote query if LinkedServer if @_isLocalHost = 0 set @_sql = 'select * from openquery(' + QUOTENAME(@_srv_name) + ', "'+ @_sql + '")'; begin try insert @_result (col_int) exec (@_sql); -- set @_ip select @_major_version_number = col_int from @_result; end try begin catch -- print @_sql; print char(10)+char(13)+'Error occurred while executing below query on '+quotename(@_srv_name)+char(10)+' '+@_sql; print ' ErrorNumber => '+convert(varchar,ERROR_NUMBER()); print ' ErrorSeverity => '+convert(varchar,ERROR_SEVERITY()); print ' ErrorState => '+convert(varchar,ERROR_STATE()); --print ' ErrorProcedure => '+ERROR_PROCEDURE(); print ' ErrorLine => '+convert(varchar,ERROR_LINE()); print ' ErrorMessage => '+ERROR_MESSAGE(); end catch end -- [minor_version_number] => Create SQL Statement to Execute if @_linked_server_failed = 0 and ( @output is null or exists (select * from @_tbl_output_columns where column_name = 'minor_version_number') ) begin delete from @_result; set @_sql = " declare @server_product_version varchar(20); declare @server_major_version_number tinyint; declare @server_minor_version_number smallint; SET @server_product_version = CONVERT(varchar,SERVERPROPERTY('ProductVersion')); SET @server_major_version_number = CONVERT(tinyint, SERVERPROPERTY('ProductMajorVersion')); if @server_major_version_number is null begin ;with t_versions as ( select CONVERT(varchar,SERVERPROPERTY('ProductVersion')) as ProductVersion ,LEFT(CONVERT(varchar,SERVERPROPERTY('ProductVersion')), CHARINDEX('.',CONVERT(varchar,SERVERPROPERTY('ProductVersion')))-1) AS MajorVersion ) select @server_major_version_number = MajorVersion from t_versions; end declare @server_minor_version_number_intermediate varchar(20); set @server_minor_version_number_intermediate = REPLACE(@server_product_version,CONVERT(varchar,@server_major_version_number)+'.'+CONVERT(varchar, SERVERPROPERTY('ProductMinorVersion'))+'.',''); if(@server_minor_version_number_intermediate is null) begin ;with t_versions as ( select replace(@server_product_version,CONVERT(varchar,@server_major_version_number)+'.','') as VrsnString ) select @server_minor_version_number_intermediate = REPLACE(@server_product_version,CONVERT(varchar,@server_major_version_number)+'.'+LEFT(VrsnString,CHARINDEX('.',VrsnString)-1)+'.','') from t_versions; end set @server_minor_version_number = left(@server_minor_version_number_intermediate,charindex('.',@server_minor_version_number_intermediate)-1); SELECT [@server_minor_version_number] = @server_minor_version_number "; -- Decorate for remote query if LinkedServer if @_isLocalHost = 0 set @_sql = 'select * from openquery(' + QUOTENAME(@_srv_name) + ', "'+ @_sql + '")'; begin try insert @_result (col_int) exec (@_sql); -- set @_ip select @_minor_version_number = col_int from @_result; end try begin catch -- print @_sql; print char(10)+char(13)+'Error occurred while executing below query on '+quotename(@_srv_name)+char(10)+' '+@_sql; print ' ErrorNumber => '+convert(varchar,ERROR_NUMBER()); print ' ErrorSeverity => '+convert(varchar,ERROR_SEVERITY()); print ' ErrorState => '+convert(varchar,ERROR_STATE()); --print ' ErrorProcedure => '+ERROR_PROCEDURE(); print ' ErrorLine => '+convert(varchar,ERROR_LINE()); print ' ErrorMessage => '+ERROR_MESSAGE(); end catch end -- Populate all details for single server inside loop if @_linked_server_failed = 0 begin insert #server_details ( [srv_name], [at_server_name], [machine_name], [server_name], [ip], [domain], [host_name], [product_version], [edition], [sqlserver_start_time_utc], [os_cpu], [sql_cpu], [pcnt_kernel_mode], [page_faults_kb], [blocked_counts], [blocked_duration_max_seconds], [total_physical_memory_kb], [available_physical_memory_kb], [system_high_memory_signal_state], [physical_memory_in_use_kb], [memory_grants_pending], [connection_count], [active_requests_count], [waits_per_core_per_minute], [os_start_time_utc], [cpu_count], [scheduler_count], [major_version_number], [minor_version_number] ) select [srv_name] = @_srv_name ,[@@servername] = @_at_server_name ,[machine_name] = @_machine_name ,[server_name] = @_server_name ,[ip] = @_ip ,[domain] = @_domain ,[host_name] = @_host_name ,[product_version] = @_product_version ,[edition] = @_edition ,[sqlserver_start_time_utc] = @_sqlserver_start_time_utc ,[os_cpu] = @_os_cpu ,[sql_cpu] = @_sql_cpu ,[pcnt_kernel_mode] = @_pcnt_kernel_mode ,[page_faults_kb] = @_page_faults_kb ,[blocked_counts] = @_blocked_counts ,[blocked_duration_max_seconds] = @_blocked_duration_max_seconds ,[total_physical_memory_kb] = @_total_physical_memory_kb ,[available_physical_memory_kb] = @_available_physical_memory_kb ,[system_high_memory_signal_state] = @_system_high_memory_signal_state ,[physical_memory_in_use_kb] = @_physical_memory_in_use_kb ,[memory_grants_pending] = @_memory_grants_pending ,[connection_count] = @_connection_count ,[active_requests_count] = @_active_requests_count ,[waits_per_core_per_minute] = @_waits_per_core_per_minute ,[os_start_time_utc] = @_os_start_time_utc ,[cpu_count] = @_cpu_count ,[scheduler_count] = @_scheduler_count ,[major_version_number] = @_major_version_number ,[minor_version_number] = @_minor_version_number end FETCH NEXT FROM cur_servers INTO @_srv_name; END CLOSE cur_servers; DEALLOCATE cur_servers; -- Return all server details if @result_to_table is null begin set @_sql = "select "+(case when @output is null then "*" else @output end)+" from #server_details;"; print "@result_to_table not supplied. So returning resultset." end else begin declare @table_name nvarchar(125); set @result_to_table = ltrim(rtrim(@result_to_table)); -- set appropriate table name if(left(@result_to_table,1) = '#') -- temp table set @table_name = 'tempdb..'+@result_to_table else begin -- physical table if CHARINDEX('.','dbo.xyz') > 0 set @table_name = @result_to_table; else set @table_name = 'dbo.'+@result_to_table; end -- delete table data if object_id(@table_name) is not null begin set @_sql = "delete from "+@table_name; exec (@_sql); end if object_id(@table_name) is not null and @output is null begin set @_sql = "insert "+@result_to_table+" select * from #server_details;"; print "@result_to_table '"+@result_to_table+"' exist, but no columns specified." end else if object_id(@table_name) is not null and @output is not null begin set @_sql = "insert "+@result_to_table+" ("+@output+") select "+@output+" from #server_details;"; print "@result_to_table '"+@result_to_table+"' exist, and columns specified." end else begin set @_sql = "select "+(case when @output is null then "*" else @output end)+" into "+@result_to_table+" from #server_details;"; print "@result_to_table '"+@result_to_table+"' does exist, so creating same." print @_sql; end end exec (@_sql); print 'Transaction Counts => '+convert(varchar,@@trancount); END set quoted_identifier on; GO |
In the above code, the procedure has parameters that accept comma-separated lists of servers/metrics to collect. We parse these lists and shred the data into table variables to get rid of any SQL Injections possibility. From here, we loop through each server that is qualified and query it using its corresponding Linked Server in combination with OPENQUERY. Below is just a snap inside above-stored procedure body. In this, we can see most of the components involved while fetching one metric at a time.
This stored procedure is quite flexible, efficient, and useful for DBA. I often answer a lot of user queries just from the result of this stored procedure without even connecting to the other SQL Servers in my organization.
I hope this would help any DBA/developer looking to explore an effective usage of a dynamic query, and how to utilize the same to connect to various other servers from a single stored procedure.
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About The Author
Ajay Dwivedi
I am Microsoft Certified Professional having 10+ years of experience in SQL Server Querying, Database Design, and Administration. I am fond of Query Tuning and like to automate things using TSQL & PowerShell. I also have experience of implementing end-to-end Data Warehouse solution, and Data Migration using ETL tools SQL Server Integration Services (SSIS), Pentaho Business Analytics, and have designed Database Inventory through PowerShell, Python, and Django etc.