Zero Length Log Backup

  • On a database maintenance plan, the backup of the transaction log is zero bytes in length. For several months it has been running ok and all of a sudden it has become zero length. All of the logs show a correct backup and the log is 4gb in size. Any ideas ?

  • In wich recovery mode your database is?

  • Are you appending to one file or making a new one each time?

    Steve Jones

    sjones@sqlservercentral.com

    http://www.sqlservercentral.com/columnists/sjones

    http://www.dkranch.net

  • A new file is created each time. It is as part of a maintenance plan. The plan has the following set for the t log

    Backup of the transaction log

    Verify is on

    Backup to disk

    Remove files older than 4 days

    The log is currently 3.31gb and the database is 11.4gb

  • Try running the backup yourself and see what happens with BACKUP LOG TSQL process. Also, check the Event Viewer logs to see if anything may have been reported to the OS, backup usually does if an error occurrs.

  • I have had that problem when my database recovery mode gets set to simple from full.

  • The recovery mode is Bulk Logging.

    I will try to run a manual backup later on today 15th Jan and come back with the results.

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