One of my client was trying to convert database mirroring to the AlwaysOn availability group. They had a mirroring configure where the principal server was going to become a primary replica. When they attempted to join the AG, it was failing with an error. The error messages we were getting in the wizard are not helpful. I went ahead and looked into SQL Server ERRORLOG and found below the messages
SQL SERVER – Ghost Cleanup Getting Hung and Blocking Checkpoint Process. What’s Wrong?
Have you even been in a situation where system processes are taking CPU and not moving ahead? Recently, one of my clients showed me a system where checkpoint on the user database being blocked indefinitely by ghost cleanup.
SQL SERVER – Clustered SQL Resource Not Coming Online
When I was on-site for the performance tuning workshop, few DBAs suddenly got call as there was an unexpected downtime of SQL Server. As per them, after some maintenance activities were scheduled, the SQL Server resource failed to come online on both nodes. When they try to bring it online, it remains in online pending state for some time before failing eventually. Here are the things I tried. Let us see an error related to clustered SQL Resource not coming online.
SQL SERVER – Installation Wizard Hangs at Service Account Page – The RPC Server is Unavailable
While trying to install SQL Server 2012 in clustered environment, client reported that it is hanging at “Please Wait” state forever. Eventually they have to kill the setup by task manager. Let us see an error related to RPC Server.
SQL SERVER – Mirroring Error: Connection handshake failed. Could not send a handshake message because the connection was closed by peer. State 26
Here is another blog based on client’s interaction via Skype. They informed me that they are trying to execute the command ALTER DATABASE SET PARTNER while attempting to set up mirroring between two servers, we see the following mirroring error recorded in the secondary error log:
SQL SERVER – FIX : Msg 3178, Level 16 – File SQLAuthority is Not in the Correct State to have This Differential Backup Applied to it
Few days back I wrote a blog about error messages during differential backup restore. SQL SERVER – Msg 3136, Level 16 – This Differential Backup Cannot be Restored Because the Database has not Been Restored to the Correct Earlier State
SQL SERVER – FIX: Msg 3132, Level 16 – The Media Set has 2 Media Families but Only 1 are Provided. All Members Must be Provided
This blog is a response to a comment on our blog. Have you ever encountered below error related to media set?
Msg 3132, Level 16, State 1, Line 15
The media set has 2 media families but only 1 are provided. All members must be provided.
Msg 3013, Level 16, State 1, Line 15
RESTORE DATABASE is terminating abnormally.