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Optimize the performance of redo log buffer

How do you optimize the performance of redo log buffer?
One of the best locations for information on redo log internals is Steve Adam's IXORA Web site. Also, take a look at this document.

Basically, in this document, you can see that if your log buffer is too small, then you will find "log buffer space" wait events in V$SYSTEM_EVENT. If you have "log buffer space" wait events, consider increasing your log buffer. If the log buffer is too large, then the average wait time for the "log file sync" wait event (again, found in V$SYSTEM_EVENT) can become too large. When you increase the log buffer, monitor the average wait time for this event. If the average wait time increases significantly, then decrease your log buffer size.

This was last published in February 2005

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