My Oracle Support Banner

ORA-600 [Kghlatch_reg4] - Older Version of Patch 5508574 does not Fix the Problem (Doc ID 603649.1)

Last updated on MARCH 28, 2019

Applies to:

Oracle Database - Enterprise Edition - Version 9.2.0.8 and later
z*OBSOLETE: IBM AIX5L Based Systems (32-bit)

Symptoms

After migrating to a new AIX system, database fails to open with ORA-00600 [KGHLATCH_REG4]

Stack trace: kghlatch_register kglsgi kqlnfy kscnfy ksmcsg

Patch for  <Bug 5508574> is already applied, but it does not help.

Starting with _kgl_latch_count=15 as workaround of <Bug 5508574> 
enables the DB to open but now the DB processes use 70% of CPU
without users logged on.

 

 

Changes

Problem started after several instances, including this one, were migrated from
AIX5.3 ML4 to AIX 5.3 ML6. This system has 10 CPUs.

Cause

To view full details, sign in with your My Oracle Support account.

Don't have a My Oracle Support account? Click to get started!


In this Document
Symptoms
Changes
Cause
Solution
References


My Oracle Support provides customers with access to over a million knowledge articles and a vibrant support community of peers and Oracle experts.