ORA-7445 [ksuklms] And Instance Crash (Doc ID 862915.1)

Last updated on NOVEMBER 28, 2016

Applies to:

Oracle Database - Enterprise Edition - Version 10.2.0.4 to 10.2.0.4 [Release 10.2]
Information in this document applies to any platform.
***Checked for relevance on DD-Mon-YYYY***

Symptoms

In the alert log is reported several times: 

ORA-07445: exception encountered: core dump [ksuklms()+527] [SIGSEGV] [Address not mapped
                     to object] [0x000000062] [] []
ORA-00494: enqueue [CF] held for too long (more than 900 seconds) by 'xx, xx'

The call stack looks like: 
   ksuklms kjdgkblkr kjukblkr ksikblkr ksqactioninvoke ksqgtlctx ksqgelctx kcc_get_enqueue kccocx
   kccbcx kcrribcx kcrrcrl_dbc kcrrcrlc

Cause

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