Thanks Grant.

I used to to start a instance which was failed due to CU install. Is there anything bad if i didn't remove it from start up parameter?

The backup preference is set to secondary only

Whats the error you got now??

As experts suggested, yes please listen to Perry.

I was just giving you the way how you can do that.

Run the below command.

USE [master]

GO

ALTER DATABASE [msdb] SET READ_WRITE WITH NO_WAIT

GO

Remove the primary database from Availability Group. Shrink the DB and then add it back.

Anyone have any idea why this is happening. This happened again today..Not able to figure out the root cause.

In our environment we do nothing particular while applying patch. We proceed with principal first and then the secondary server. Most of the times reboot is required and we go...

As Gail mentioned better call customer care.. System Tables part of deadlock is not a good sign i feel.

We had issue in this environment as our snapshot was getting corrupted because of the limitation of windows. The file as getting fragmented because of high data change. Will that...

Thanks Perry for the reply.

In order to successfully upgrade the application they need to rename the Primary database as DB_Upgrade for that they need to take the DB out of...

Thanks everyone for the response.

They reinstalled Visual C++ and everything working fine now,i dont know how that happened!!!!

Found below link..

http://blogs.msdn.com/b/psssql/archive/2008/07/10/sql-server-reports-operating-system-error-1450-or-1452-or-665-retries.aspx

http://blogs.msdn.com/b/psssql/archive/2009/03/04/sparse-file-errors-1450-or-665-due-to-file-fragmentation-fixes-and-workarounds.aspx

Sorry for the confusion.. I mean Read Only Database.

Thanks Jitendra..

Our issue is AppDomain is unloading without any reason. We have logged a call with MS now.