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ORA-07445: [kgxMutexHng()+4] During Select Statements And Hang Analysis (Doc ID 1420930.1)

Last updated on MARCH 09, 2019

Applies to:

Oracle Database - Enterprise Edition - Version to [Release 11.1]
Oracle Database Cloud Schema Service - Version N/A and later
Oracle Database Exadata Express Cloud Service - Version N/A and later
Oracle Database Exadata Cloud Machine - Version N/A and later
Oracle Cloud Infrastructure - Database Service - Version N/A and later
Information in this document applies to any platform.
***Checked for relevance on 24-Jan-2014***


You are performing select and hang analysis operations in your database and notice the following errors being generated in the alert log:

ORA-07445: exception encountered: core dump [PC:0x1069E54E4] [SIGSEGV] [ADDR:0x0] [PC:0x1069E54E4] [Stack Overflow] []

The call stack in the trace will be similar to the following:

ksedst1 ksedst dbkedDefDump ssexhd sighndlr call_user_handler kgxMutexHng kksMutexHng ksdhng_callcbk ksdhng_localblkrs ksdhng_getblkr qerfxGCol qerfxFetch qersoFetch qerjotFetch opifch2 kpoal8 opiodr ttcpip opitsk opiino opiodr opidrv sou2o main start




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