How to hanganalyze and systemstate dumps
2015-12-03 11:30
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Oracle support request hang analysis and system state dumps when rasing SR.
One 10.1 or higher versions login as
sqlplus -prelim / as sysdba
To do a hanganalyze
oradebug setmypid;
oradebug unlimit;
oradebug hanganalyze 3;
Wait 60 – 90 seconds and run the last command again to identify the process state changes.
To get a systemstate dump
oradebug setmypid;
oradebug unlimit;
oradebug dump systemstate 266;
Wait 60 – 90 seconds and run again to identify the system state changes.
If it is taking too long then cancel and run with level 258.
One a cluster environment use
oradebug -g all hanganalyze 3
for hang analyze
oradebug -g all dump systemstate 266
for system state dumps.
oradebug tracefile_name
get dump trace file path
One 10.1 or higher versions login as
sqlplus -prelim / as sysdba
To do a hanganalyze
oradebug setmypid;
oradebug unlimit;
oradebug hanganalyze 3;
Wait 60 – 90 seconds and run the last command again to identify the process state changes.
To get a systemstate dump
oradebug setmypid;
oradebug unlimit;
oradebug dump systemstate 266;
Wait 60 – 90 seconds and run again to identify the system state changes.
If it is taking too long then cancel and run with level 258.
One a cluster environment use
oradebug -g all hanganalyze 3
for hang analyze
oradebug -g all dump systemstate 266
for system state dumps.
oradebug tracefile_name
get dump trace file path
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