For some reason, the system databases didn’t have a backup schedule. I believed in the error message and looked for a master database backup to repair or rebuild it.For more information about how to rebuild the master database, see SQL Server Books Online. Restore master from a full backup, repair it, or rebuild it. 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.Ĭannot recover the master database. If the error happened during upgrade of the ‘master’ database, it will prevent the entire SQL Server instance from starting. This is a serious error condition which might interfere with regular operation and the database will be taken offline. Script level upgrade for database ‘master’ failed because upgrade step ‘ISServer_upgrade.sql’ encountered error 15151, state 1, severity 16. Upon initial verification the error from Application log in event viewer looked like:.A Customer identifies that SQL Services are down and cannot even restart them manually & makes the emergency call to us.The following scenario Occurred recently:

Rebuild master database in sql server