ORA-7445 [kcbxbh()]/[kcbzgb]/[kggchk()] Error With _DB_BLOCK_HASH_LATCHES Set

(Doc ID 404937.1)

Last updated on SEPTEMBER 28, 2010

Applies to:

Oracle Server - Enterprise Edition - Version: 9.0.1.0 to 10.2.0.2 - Release: 9.0.1 to 10.2
Information in this document applies to any platform.

Symptoms

Queries against the V$BH view may core dump with an ORA-7445 [kcbxbh()] error with a call stack similar to:

kcbxbh qerfxFetch rwsfcd qersoFetch qerjoFetch opifch2 opiall0 kpoal8 opiodr ttcpip opitsk opiino opiodr opidrv sou2o main start

Or the instance may fail to start with an ORA-7445 [kcbzgb] followed by ORA-7445 [kggchk()] from PMON with call stacks of:

kcbzgb kcbzib kcbgtcr kqlbebs kqlblfc adbdrv opiexe opiosq0 kpooprx kpoal8 opiodr ttcpip opitsk opiino opiodr opidrv sou2o opimai_real main

kggchk kcbwlc kslilcr ksl_cleanup ksuxfl ksuxda ksucln ksbrdp opirip opidrv sou2o opimai_real main

Changes

The hidden parameter _DB_BLOCK_HASH_LATCHES has been manually set in the instance.

Cause

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