Dispatchers Die With ORA-7445 + ORA-4031 for excessive NETWORK BUFFERS (Doc ID 741523.1)

Last updated on NOVEMBER 28, 2016

Applies to:

Oracle Server - Enterprise Edition - Version: 10.2.0.3 to 11.1.0.7 - Release: to 11.1

Symptoms

On 10.2, after upgrading from 9iR2, the following error occurs:

ORA-07445: exception encountered: core dump [] [] [] [] [] []

plus

Dispatcher Trace file contains an ORA-4031 Diagnostic trace, with:
  Allocation request for: NETWORK BUFFER

...followed by...

found dead dispatcher 'D000', pid = (12, 1)

Changes

Recently upgraded from Oracle 9iR2.

Cause

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