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OCI Consuming Excessive CPU With Oracle 11.2.0.1 (Doc ID 1286601.1)

Last updated on MARCH 21, 2019

Applies to:

Oracle Database - Enterprise Edition - Version 11.2.0.1 and later
Information in this document applies to any platform.

Symptoms

OCI consumes a lot of CPU with Oracle 11.2.0.1, not seen this on previous releases.The OCI release session can take up to a minute to release the sessions, when using session pooling.

Testcase using OCI session pooling:


With expired time < timeout, the time to release sessions is zero.  After that the release time is approximately equal to the timeout, and this is true for all other timeouts tested: 20, 5 and 0 seconds, so a quick workaround is simply to set the timeout to zero.

Cause

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In this Document
Symptoms
Cause
Solution
References


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