Using log data sets for recovery

RLDSs are smaller than SLDSs because they contain only a subset of the recovery-related log records from the corresponding SLDSs. The Log Archive utility writes to the RLDS only those records that are needed for recovery. The frequency of image copies has a major impact on recovery time in this case, depending on the volume of database updates.

You must submit the log volumes to the recovery utility in chronological sequence: from the oldest to the most recent.

If you back out a database using the Database Batch Backout utility after making an image copy of it, you must use both the log created by the Batch Backout utility and the original log as input to the Database Recovery utility. This is because the Batch Backout utility backs out some of the changes recorded on the original log.