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Error/Fix: Cannot Insert Duplicate Key for UPSERT Code in SQLServer
Posted inErrors TSQL

Error/Fix: Cannot Insert Duplicate Key for UPSERT Code in SQLServer

Posted by By Ajay Dwivedi June 28, 2025
Error/Fix: Cannot Insert Duplicate Key for UPSERT Code in SQLServer
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Msg 924, Level 14, State 1, Line 1
Posted inErrors TSQL

Error/Fix: Msg 924. Get Database Out of Single User Mode

Posted by By Ajay Dwivedi September 23, 2022
Losing single_user database connection is painful, and this script helps to regain the database access by getting database back to multi_user mode.
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Msg 3415, Level 16, State 5, Line 3 Database ‘StackOverflow2010’ cannot be upgraded because it is read-only, has read-only files or the user does not have permissions to modify some of the files. Make the database or files writeable, and rerun recovery.
Posted inErrors

Error/Fix: Database cannot be upgraded because it is read-only or has read-only files

Posted by By Ajay Dwivedi July 26, 2020
Yesterday during my online SQL Server class, I was trying to attach 10 GB size…
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Error - Cannot initialize the data source object of OLE DB provider "OraOLEDB.Oracle" for linked server. (.Net SqlClient Data Provider)
Posted inErrors

Error/Fix: Cannot initialize the data source object of OLE DB provider “OraOLEDB.Oracle” for linked server. (.Net SqlClient Data Provider)

Posted by By Ajay Dwivedi February 20, 2020
Recently I was working on one user request to create a linked server for Oracle…
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Error/Fix: There is insufficient system memory in resource pool ‘default’ to run this query.
Posted inErrors

Error/Fix: There is insufficient system memory in resource pool ‘default’ to run this query.

Posted by By Ajay Dwivedi July 7, 2018
Recently I was reading about Temporal Tables feature that has been introduced with SQL Server…
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Error/Fix: Cannot resolve the collation conflict between “Latin1_General_CI_AS” and “SQL_Latin1_General_CP1_CI_AS” in the equal to operation
Posted inErrors TSQL

Error/Fix: Cannot resolve the collation conflict between “Latin1_General_CI_AS” and “SQL_Latin1_General_CP1_CI_AS” in the equal to operation

Posted by By Ajay Dwivedi April 15, 2018
Recently I was working on a SQL query in my inventory database, and was greeted…
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Error/Fix: The database owner SID recorded in the master database differs from the database owner SID recorded in database
Posted inErrors

Error/Fix: The database owner SID recorded in the master database differs from the database owner SID recorded in database

Posted by By Ajay Dwivedi January 28, 2017
Recently I received an incident for low disk space on mount point dedicated to system…
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Error/Fix: The Extended Events session named “blocked_process” could not be found.
Posted inDatabase Administration Errors

Error/Fix: The Extended Events session named “blocked_process” could not be found.

Posted by By Ajay Dwivedi November 24, 2016
Two days back while I am presenting in a KT session within team on how…
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SQL SERVER – Fix : Error : The request failed or the service did not respond in a timely fashion
Posted inDatabase Administration Errors

SQL SERVER – Fix : Error : The request failed or the service did not respond in a timely fashion

Posted by By Ajay Dwivedi November 3, 2016
Yesterday, I was working on my office laptop with SQL Server which was installed previous…
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