What is the ORADEBUG?

What is the ORADEBUG?

ORADEBUG is a command and can be executed from SQL*Plus to view process internal information.

You can see a list of ORADEBUG commands by following command.

SQL> oradebug help

Trace SQL statements with bind variables;

1- Set Process PID number which you want to trace

SQL> oradebug setospid 32318 Oracle pid: 29, Unix process pid: 32318, image: oracle@dbarge (TNS V1-V3)

Or you can trace your own process

SQL> oradebug setmypid

2- Start 10046 trace

SQL> oradebug EVENT 10046 trace name context forever, level 12

3- Analyze your trace file

# vi /oracle/diag/rdbms/dbarge/TEST11G/trace/TEST11G_ora_32318.trc

Trace Process Statistics;

1- Set process PID number which you want to trace. You can see it on PID column in V$PROCESS view. For example; to monitor LGWR process statistics which PID number is 11.

SQL> oradebug setorapid 11 Oracle pid: 11, Unix process pid: 16944, image:oracle@dbarge(LGWR)

2- Get statistics for LGWR process.

SQL> oradebug procstat

3- Write statistics to file.

SQL> oradebug TRACEFILE_NAME /oracle/diag/rdbms/dbarge/TEST11G/trace/TEST11G_lgwr_16944.trc

List used semaphores and shared memory segments;

SQL> oradebug ipc

Dumping error stack;

SQL> oradebug setospid 11301

SQL> oradebug event immediate trace name errorstack level 3

 

Talip Hakan Öztürk

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