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 126.96.36.199 and later
z*OBSOLETE: IBM AIX5L Based Systems (32-bit)
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.
Problem started after several instances, including this one, were migrated from
AIX5.3 ML4 to AIX 5.3 ML6. This system has 10 CPUs.
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