Connection handshake failed with 0x80090350 on an availability group replica. What the code means, why it says mirroring, and what to check.
SQL SERVER – How to Turn On / Enable Instant File Initialization?
To Enable Instant File Initialization for data files, I check the Windows service identity and volume-maintenance privilege. Eligibility still matters.
SQL SERVER – T-SQL Script: How to Search for Multiple Values in ERRORLOG?
Need to find corruption or other errors in the ERRORLOG? Here is a T-SQL script I use to search for multiple values in the SQL Server ERRORLOG at once.
How to Check Status of Instant File Initialization? – Interview Question of the Week #184
Here are two quick ways to check status of Instant File Initialization: read the error log, or query sys.dm_server_services on SQL Server 2016 and later.
SQL SERVER – How to Check If Instant File Initialization Enabled or Not?
Is Instant File Initialization enabled on your server? Before SQL Server 2016 there was no quick answer, but from 2016 onward you can check it in seconds.
SQL SERVER – Error 9002: The Transaction Log for Database ‘SQLDB’ is Full Due to ‘DATABASE_MIRRORING’
Error 9002 has many causes. Here I explain the one where the transaction log for database ‘SQLDB’ is full due to ‘DATABASE_MIRRORING’ and what it tells you.
ROWLOCK Hint and Slow Performance in SQL Server
A ROWLOCK hint makes SQL Server lock each row it reads instead of whole pages. This post counts the locks of the same scan with and without the hint, times both versions, shows how an open transaction on a busy server changes the result, and explains how ROWLOCK differs from UPDLOCK.