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IDS Forum

Instance constantly checkpointing...

Posted By: Tristan Ball
Date: Thursday, 9 June 2011, at 9:42 a.m.

Hi Everyone.

I've got a server instance that is effectively constantly check pointing, (as in once every couple of seconds)

Onstat -g ckp tells me "AUTO_CKPTS=On RTO_SERVER_RESTART=Off", and it also tells me that the trigger for all these checkpoints is Plog.
Onstat -l shows that the phys size is 512000, but the % used never gets above 0.1.

I don't understand why it's checkpointing so often?

The onstat -g ckp tells me I need a larger physical log, specifically 39,160,208 KB. But really? 39Gig! :)
It's also telling me I need a larger logical log, 21,715,120 KB. But again, 21G seems on the large side. The whole database is only 80, and frankly the write load isn't that high!

Any help much appreciated!

Thanks,

Tristan

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