Monday, July 27, 2009

Free version of ASH

Hi,

If you have a performance problem and don't have license to use Active Session History
you can use a free version of it. It is not using a direct SGA access but it is designed by Kyle Hailey
- one of OEM Performance tab designer.

When I read about direct access to X$ table using a oradebug utility on
Miladin Modrakovic's blog I started to wonder if this two technologies can be combined.
Unfortunately I have tested direct access using oradebug and CPU usage is unexpected high on my VM machine and in that case direct access can disrupt our observations.

regards,
Marcin

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