Apply Tlog backup on stand by mode?

  • Hi,

    how to Apply Tlog backup on stand by mode?

    Now database is restoring mode, once change to stand by mode from stand by mode,

    when apply last / final backup, then either can restore with Recovery or Standby option.

    After that can we possible to apply regulare Tlog backup?

    thanks

  • If you restore the log backup WITH STANDBY, you can restore further log backups. If you restore the log backup WITH RECOVERY, you cannot restore further log backups.

    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

    We walk in the dark places no others will enter
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  • from Books online : http://technet.microsoft.com/en-us/library/ms178615.aspx

    STANDBY =standby_file_name

    Specifies a standby file that allows the recovery effects to be undone. The STANDBY option is allowed for offline restore (including partial restore). The option is disallowed for online restore. Attempting to specify the STANDBY option for an online restore operation causes the restore operation to fail. STANDBY is also not allowed when a database upgrade is necessary.

    The standby file is used to keep a "copy-on-write" pre-image for pages modified during the undo pass of a RESTORE WITH STANDBY. The standby file allows a database to be brought up for read-only access between transaction log restores and can be used with either warm standby server situations or special recovery situations in which it is useful to inspect the database between log restores. After a RESTORE WITH STANDBY operation, the undo file is automatically deleted by the next RESTORE operation. If this standby file is manually deleted before the next RESTORE operation, then the entire database must be re-restored. While the database is in the STANDBY state, you should treat this standby file with the same care as any other database file. Unlike other database files, this file is only kept open by the Database Engine during active restore operations.

    The standby_file_name specifies a standby file whose location is stored in the log of the database. If an existing file is using the specified name, the file is overwritten; otherwise, the Database Engine creates the file.

    The size requirement of a given standby file depends on the volume of undo actions resulting from uncommitted transactions during the restore operation.

    Important note Important

    If free disk space is exhausted on the drive containing the specified standby file name, the restore operation stops.

    Johan

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