ORA-7445 [kxsdmp] [SIGSEGV] [Address not mapped to object]

(Doc ID 418999.1)

Last updated on NOVEMBER 28, 2016

Applies to:

Oracle Database - Enterprise Edition - Version to [Release 9.2 to 10.1]
Information in this document applies to any platform.
*** Checked for relevance on 29-Sep-2011 ***
*** Checked for relevance on 11-Mar-2013 ***


1). PMON has terminated the instance and the following error was captured in the alert.log:

ORA-07445: exception encountered: core dump [kxsdmp()+175] [SIGSEGV] [Address not mapped to object] [0x14C] [] []
ORA-00474: SMON process terminated with error
Wed Feb 21 01:13:36 2007
PMON: terminating instance due to error 474


2). In the ORA-7445 trace file you will see:

Begin 4031 Diagnostic Information
The following information assists Oracle in diagnosing
causes of ORA-4031 errors. This trace may be disabled
by setting the init.ora parameter _4031_dump_bitvec = 0


3). The call stack will resemble:

kxsdmp ksm_4031_dump ksmasg kghnospc kghalp kkslod kglobld kglobpn kglpim kglpin kksfbc kkspsc0



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