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Does using DBMS_RESOURCE_MANAGER.CALIBRATE_IO update any system/optimizer statistics in the DB?

edited Apr 21, 2016 10:23AM in SQL Performance (MOSC) 7 commentsAnswered ✓

Hi All,

I am thinking of using this tool in PROD database during downtime(when the system is idle) to understand how much IOPS our DB host can handle without any issues.

Can someone please tell if using this tool results in any system statistics getting updated?

I read some concerns regarding the change in execution plans for the queries which use parallel degree. Is that true and are there any concerns with using procedure?

I want to avoid any execution plans getting changed due to using it. Is it only read-only tool or doest it actually 'calibrate' something. Name of the procedure is misleading

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