Encounter ORA-07445 [kgghash()] with function k2gte2cb trapped in the call stack (Doc ID 1474924.1)

Last updated on NOVEMBER 28, 2016

Applies to:

Oracle Database - Enterprise Edition - Version 11.2.0.2 and later
Information in this document applies to any platform.
***Checked for relevance on 13-Dec-2013***

Symptoms

Alert log reports the error message ORA-07445[kgghash()]

Wed Jul 11 06:39:31 2012
Exception [type: SIGSEGV, Address not mapped to object] [ADDR:0x4C000400D] [PC:0x1073215C4, kgghash()+804] [flags: 0x0, count: 1]
Errors in file /opt/app/oracle/diag/rdbms/tarim/tarim1/trace/tarim1_pz96_12302.trc (incident=82721):
ORA-07445: exception encountered: core dump [kgghash()+804] [SIGSEGV] [ADDR:0x4C000400D] [PC:0x1073215C4] [Address not mapped to object] []
Incident details in: /opt/app/oracle/diag/rdbms/tarim/tarim1/incident/incdir_82721/tarim1_pz96_12302_i82721.trc
Use ADRCI or Support Workbench to package the incident.
See Note 411.1 at My Oracle Support for error and packaging details.


The trace file indicates that the query was made on the global transaction table:

SELECT formatid, globalid, branchid FROM SYS.DBA_PENDING_TRANSACTIONS


The call stack in the trace file includes next functions. Please note the function k2gte2cb in the below stack:

ksedst1 <- ksedst <- dbkedDefDump <- ssexhd <- sighndlr
       <- call_user_handler <- kgghash <- k2gte2cb <- qerfxFetch <- qervwFetch
        <- qertqoFetch <- qerpxSlaveFetch <- 868 <- qerpxFetch <- opiexe
         <- kpoal8 <- opiodr <- kpoodr <- upirtrc <- kpurcsc
          <- kpuexec <- OCIStmtExecute <- kxfxsStmtExecute <- 204 <- kxfxsExecute
           <- kxfxsp <- kxfxmai <- kxfprdp <- opirip <- opidrv
            <- sou2o <- opimai_real <- ssthrdmain <- main <- start

Cause

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