Script level upgrade for database 'master' failed because upgrade step 'sqlagent100_msdb_upgrade.sql'
As huge a database grows, that tedious are regular DBA activities become. Besides, a warehouse database, can grow with no bounds to challenge. There was a patching on one of our databases, SP3 for SQL Server 2008 R2, which was failing due to the error below. As the error says, MASTER the heart of SQL Server “Script level upgrade for database 'master' failed because upgrade step 'sqlagent100_msdb_upgrade.sql' encountered error 2627, state 1, severity 14. This is a serious error condition which might interfere with regular operation and the database will be taken offline. If the error happened during upgrade of the 'master' database, it will prevent the entire SQL Server instance from starting. Examine the previous errorlog entries for errors, take the appropriate corrective actions and re-start the database so that the script upgrade steps run to completion. Cannot recover the master database. SQL Server is unable to run. Restore master from a full