Re: Database Backups

From: Michael Kling <msk_at_ssds.com>
Date: Mon, 13 Mar 1995 07:50:06 -0500
Message-ID: <msk-1303950750060001_at_mac_msk.boston.ssds.com>

>

Should space permit - a second instance of the databse with the first instance in archive log mode will allow the real time application of the archive log files to be applied to the second instance. In case of failure the second instance will be out of synch by whatever entries exist within those archive log files NOT applied PLUS whatever entries exist within the online redo logs not having been written to an archive log file. This technique is in use at a VA site and works well. CAUTION: the second instance of the database CAN NOT be OPENED except in EXCLUSIVE mode. Should this happen the databases will no longer be in SYNCH and the "trick" will no longer work.

Feel free to contact me at msk.ssds.com for any further details. Received on Mon Mar 13 1995 - 13:50:06 CET

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