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ORA-07445 [kgghstmap()+8] Causes PMON to Terminate Instance (Doc ID 1674716.1)

Last updated on FEBRUARY 25, 2019

Applies to:

Oracle Database - Enterprise Edition - Version 11.2.0.3 and later
Oracle Database Cloud Schema 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
Oracle Database Backup Service - Version N/A and later
Information in this document applies to any platform.

Symptoms

PMON terminated the instance after an ORA-07445 [kgghstmap()+8]

The alert log reports errors like

...
Exception [type: SIGSEGV, Address not mapped to object] [ADDR:0x8] [PC:0x2BC2640, kgghstmap()+8] [flags: 0x0, count: 1]
Errors in file <diagnostic_dest>/diag/rdbms/<dbname>/<instname>/trace/<instname>_ckpt_17153.trc  (incident=86657):
ORA-07445: exception encountered: core dump [kgghstmap()+8] [SIGSEGV] [ADDR:0x8] [PC:0x2BC2640] [Address not mapped to object] []
Incident details in:<diagnostic_dest>/diag/rdbms/<dbname>/<instname>/incident/incdir_86657/<instname>_ckpt_17153_i86657.trc
Use ADRCI or Support Workbench to package the incident.
See Note 411.1 at My Oracle Support for error and packaging details.
Sat Jan 11 06:04:59 2014
Dumping diagnostic data in directory=[cdmp_20140111060459], requested by (instance=1, osid=17153 (CKPT)), summary=[incident=86657].
Sat Jan 11 06:04:59 2014
Sweep [inc][86657]: completed
Sweep [inc2][86657]: completed
Sat Jan 11 06:05:01 2014
PMON (ospid: 17107): terminating the instance due to error 469
System state dump requested by (instance=1, osid=17107 (PMON)), summary=[abnormal instance termination].
System State dumped to trace file <diagnostic_dest>/diag/rdbms/<dbname>/<instname>/trace/<instname>_diag_17117.trc
Instance terminated by PMON, pid = 17107
...


The call stack from the trace file contains functions like

... skdstdst ksedst1 ksedst dbkedDefDump ksedmp ssexhd sighandler kgghstmap kzctxg_xiccb ksbxiafdomsg ksbxiaf ksbcti ksbabs ksbrdp opirip opidrv sou2o opimai_real ssthrdmain main libc_start_main start

Changes

 

Cause

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In this Document
Symptoms
Changes
Cause
Solution
References


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