IPC Protocol fails with ORA-12537 and/or TNS-12518 errors after IBM AIX OS patching (7.1 Tl5 Sp01)

(Doc ID 2371736.1)

Last updated on MAY 16, 2018

Applies to:

Oracle Net Services - Version 11.2.0.4 and later
IBM AIX on POWER Systems (64-bit)

Symptoms

You may get either of the following errors and issues:

1. Connections using IPC fail with:


 

Changes

 There may have been an update to the AIX patching.
The following is one of the known patches / versions:
7.1 Tl5 Sp01
7100-05-01-1731

Cause

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