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分类: Oracle

2009-05-20 16:57:02

The production database hang, try to get the systemstat
++++++++++++++++++
%oracle_home%\bin\sqlplus -prelim / as sysdba
oradebug setmypid
oradebug unlimit;
oradebug dump systemstate 266
oradebug dump systemstate 266
++++++++++++++++++
 
Then, it got a error in alert log
 
++++++++++++++++++
System State dumped to trace file
Tue May 19 13:16:12 2009
Errors in file d:\oracle\product\10.2.0\admin\fspdc\udump\fspdc_ora_12612.trc:
ORA-07445: exception encountered: core dump [ACCESS_VIOLATION] [kgxAolDump+208] [PC:0x50C15B6] [ADDR:0x88] [UNABLE_TO_READ] []
++++++++++++++++++
 
It caused by a bug.
 
The solution from metalink

:

417879.1

 

Cause

Issue was filed as and was closed as a duplicate of unpublished bug 5730231.



Solution

The issue is not resolved in any known patches. The below workaround was provided:

Workaround
~~~~~~~~~~~~
Connect / as sysdba (without -prelim)

-OR-

Force the variable PGA to be initialized
eg:
sqlplus -prelim '/ as sysdba'
oradebug setmypid
oradebug unlimit;
oradebug call ksmcpg
oradebug dump systemstate 10

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