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Home -> Community -> Mailing Lists -> Oracle-L -> Re: Are snapshot logs purged?
Once the fast refresh has completed the records from the mlog$ table should be deleted. This should happen automatically as long as there aren't two snapshots depending on the data. The high water mark on the table will continue to grow which will cause your refreshes to slow down over time. We had a job that ran late at night that would select from the mlog$ table to see if there was data in it. If there wasn't we would truncate the mlog$ table to reset the high water mark.
james
--- Bala Muru <muru_oracle_at_yahoo.com> wrote:
> Hello Lists,
>
> I have a set of snapshots refreshing in FAST mode
> using snapshot logs. The snapshot log is keep-on
> growing as it should and after certain amount of
> time,
> I had to expand the tablespace space under which the
> snapshot log is located.
>
> My question is, Is there a way to periodically
> truncate or remove records from snapshot logs? Of
> course we can make something on our own by
> scheduling
> some delete jobs, but, Is there any default method
> available in Oracle?
>
> Any input would be highly appreciated.
>
> Thanks in advance,
> Muru
>
>
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-- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: james ellis INET: jellis24_gso_at_yahoo.com Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051 San Diego, California -- Public Internet access / Mailing Lists -------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: ListGuru_at_fatcity.com (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).Received on Fri Feb 16 2001 - 14:13:31 CST
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