ORA-7445 [Lstclo()+40] After Patch Apply or Relink (Doc ID 344858.1)

Last updated on FEBRUARY 07, 2014

Applies to:

Oracle Database - Enterprise Edition - Version 8.1.7.4 and later
Information in this document applies to any platform.
*** Checked for relevance on 29-Apr-2013 ***

Symptoms

The following error occurs numerous times in the alert log:

ORA-07445: exception encountered: core dump [lstclo()+40] [SIGSEGV] [Address not mapped to object] [4294967295] [] []


In one ORA-7445 occurrence, the error occurred on the following SQL statement issued in SQL*Plus: 

alter session set optimizer_goal=rule;


The error did not lead to termination of the instance.

The call stack in the Call Stack Trace from the trace file generated at the time of the ORA-7445 error contains the following functions:

lstclo ksppts kkyase opiexe opiall0 kpoal8 opiodr ttcpip opitsk opiino opiodr opidrv sou2o main start 

Changes

A patch had recently been applied.

Cause

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