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continuous logging question

Posted in 2001

Topics: Backup & Restore

Phillip — — source: Informix-list mailing list archive (1991-1998)

Gotta question for you guys: if I'm running continuous logging (ontape -c) and I bounce the engine, is the continuous logging tape still good for restore purposes up to the point at which I bounced the engine even though the ontape process was terminated improperly? In other words, when you stop the continuous logging process properly, it does one last backup to tape before exiting. But since I'm bouncing the engine, it doesn't get to do this exit procedure so I'm wondering if the tape is still good. Anybody got any ideas? -- Phillip Tien Database Administrator Whole Foods Market, Inc.

↪ replying to Phillip
Art S. Kagel — — source: Informix-list mailing list archive (1991-1998)

Phillip wrote: > > Gotta question for you guys: > > if I'm running continuous logging (ontape -c) and I bounce the engine, > is the continuous logging tape still good for restore purposes up to the > point at which I bounced the engine even though the ontape process was > terminated improperly? In other words, when you stop the continuous > logging process properly, it does one last backup to tape before > exiting. But since I'm bouncing the engine, it doesn't get to do this > exit procedure so I'm wondering if the tape is still good. Anybody got > any ideas? Yes. Continuous logging is not really continuous. It alwways writes a complete logfile to the tape ONLY when each log has filled. BTW 'improperly' is the ONLY way to terminate ontape -c. Art S. Kagel

↪ replying to Phillip
William Rice — — source: Informix-list mailing list archive (1991-1998)

In article <3A82D322.8B7F5F50@wholefoods.com>, Phillip <tienp@wholefoods.com> wrote: > Gotta question for you guys: > > if I'm running continuous logging (ontape -c) and I bounce the engine, > is the continuous logging tape still good for restore purposes up to the > point at which I bounced the engine even though the ontape process was > terminated improperly? In other words, when you stop the continuous > logging process properly, it does one last backup to tape before > exiting. But since I'm bouncing the engine, it doesn't get to do this > exit procedure so I'm wondering if the tape is still good. Anybody got > any ideas? > > -- > Phillip Tien > Database Administrator > Whole Foods Market, Inc. > > I always had my stop script do an onmode -l to switch the logical logs after it sent the ontape process a SIGINT. Hope this helps, Will Sent via Deja.com http://www.deja.com/

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