• As you identified, the cause of the log being full is the active backup. The checkDB errors are all a result of the log being full, nothing else.

    You need to identify why the backups are running so much longer than usual. Immediate thought - IO subsystem contention.

    Gail Shaw
    Microsoft Certified Master: SQL Server, MVP, M.Sc (Comp Sci)
    SQL In The Wild: Discussions on DB performance with occasional diversions into recoverability

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