RE: Confusion why online redo logs should never be backed up.

It would probably be more appropriate to say, the usefulness of such a file is questionable.
because ...
The online log you are backing up might be the current log that is being written to while you are backing it up. Oracle can use logs to straighten out a data block that is being modified at the same time you are copying it to a backup. But oracle can't do that with online logs. You would need logs for the logs. Then you would wonder about backing up the logs for the logs. Which means you would need logs for the logs for the logs ....

> -----Original Message-----
>
>
> Hi All,
>
> In Oracle8i Backup & Recovery Handbook pg 13 it states
> "Finally, online
> redo log files should never be backed up....So, it is good
> practice not to
> back up online log files for ANY kind of backup.
>
> Can someone clearly explain why this is recommended?
>

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Author: Stephen Lee
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