Shared Server Only: TNS-12518, TNS-12564 and TNS-12602 Errors at Connect Time (Doc ID 1539104.1)

Last updated on JANUARY 26, 2017

Applies to:

Oracle Database - Enterprise Edition - Version 10.2.0.5 to 11.2.0.3 [Release 10.2 to 11.2]
Information in this document applies to any platform.

Symptoms

When a high rate of shared server connections are being established, some connections fail with the following error stack:

 

Changes

 No changes but the amount of traffic may have increased and precipitated this problem.

Cause

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