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Decouple archive log purging from BACKUP utility

For databases using AUTO_DEL_REC_OBJ, at the end of the BACKUP utility there is a synchronous process which purges any history records and their associated archive logs. This can take a very long time on busy systems. It is necessary to decouple this purge process so that it is either optional (perhaps an extra option on the BACKUP command) or by making the purging asynchronous.
  • Guest
  • Jan 3 2019
  • Planned
Why is it useful?
Who would benefit from this IDEA?
How should it work?
Idea Priority High
Priority Justification
Customer Name ScotDB Limited
Submitting Organization
Submitter Tags
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  • Philip Nelson commented
    11 Apr, 2019 10:35am

    This was prompted by a situation, driven by GDPR requirements, where very larget amounts of updates / deletes were being carried out.   Because of the number of archive logs being pruned after AUTO_DEL_REC_OBJ came into play, it was found that a backup taking about 3 hours was followed by a 24 hour history file cleanup / log purging exercise.


    The time it takes is directly related to the number of items in the history file, rather than the size of individual log files.   However, increasing log file size by too much adds extra exposures (logs not being archived "off box" quickly enough.

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