Msg 3023, Level 16, State 2 Backup, file manipulation operations (such as ALTER DATABASE ADD FILE) and encryption changes on a database must be serialized. Reissue the statement after the current backup or file manipulation operation is completed.

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Sql certificate chain was issued by an authority that is not trusted

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Trace flag 902 in SQL Server and Error 574

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Tcp port is already in use.How do I check if a port is already in use?

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How to fix Invalid comparison due to NO COLLATION

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