shivenracdba

SELECT   mymodule "Module", SUM (cpu_time) "CPU Time", SUM (wait_time) "Wait Time",          SUM (cpu_time) + SUM (wait_time) "Total Time"     FROM (SELECT a.module mymodule,                  (CASE (session_state)                      WHEN 'ON CPU'                         THEN wait_time / 100                   END                  ) cpu_time,                  (CASE (session_state)                      WHEN 'WAITING'                         THEN time_waited / 100                   END                  ) wait_time             FROM dba_hist_active_sess_history a, dba_hist_snapshot b            WHERE b.end_interval_time > sysdate-10              AND a.snap_id = b.snap_id              AND a.user_id NOT IN (0, 5)              AND a.instance_number = b.instance_number) GROUP BY mymodule   HAVING SUM (cpu_time) + SUM (wait_time) > 0 ORDER BY 2 DESC; select                  decode(n.wait_class,'User I/O

exec DBMS_MONITOR.SESSION_TRACE_ENABLE(waits => TRUE, binds => TRUE); select value from v$diag_info where name='Default Trace File'; select u_dump.value || '/' || instance.value || '_ora_' || v$process.spid || nvl2(v$process.traceid, '_' || v$process.traceid, null ) || '.trc' "Trace File" from V$PARAMETER u_dump cross join V$PARAMETER instance cross join V$PROCESS join V$SESSION on v$process.addr = V$SESSION.paddr where u_dump.name = 'user_dump_dest' and instance.name = 'instance_name' and V$SESSION.audsid=sys_context('userenv','sessionid'); exec DBMS_MONITOR.SESSION_TRACE_DISABLE;

Starting background process GTX4 Tue Jan 01 15:51:12 2012 GTX4 started with pid=64, OS id=11122 Tue Jan 01 15:51:43 2012 Auto-tuning: Starting background process GTX5 and Auto-tuning: Shutting down background process GTXi Like messages in alert log in RAC database This event is recorded in RAC environment only, which is normal.    Its normal for the database to automatically tune the number of these processes based on the workload of XA global transactions. If any application which using XA transaction and connecting to oracle RAC database, is it required. This normal behavior and you do not have to worry about this error messages.  If you are sure that you are not using XA and want to stop these messages. You can disable the GTXn background processes, then you must set GLOBAL_TXN_PROCESSES to 0 in your parameter file. Setting this parameter to 0 will disable the XA support on an Oracle RAC database. GLOBAL_TXN_PROCESSES specifies the initial numb