DBMS_MONITOR and trcsess, inserts slow.
We have a multi-tier application connecting to the database using connection pool. There one db that suddenly started performing very slow especially on inserts and I wanted to try to pin exactly why this was happening. CPU when the inserts are happening is pegged to the max. Since there are many thread running selects and doing batch inserts I was unable to trace any one specific sessions or monitor them. So I wanted to use this so that I gather all info that is happening on the DB so that I can analyze what exaclty is going on.
EXECUTE DBMS_MONITOR.DATABASE_TRACE_ENABLE(waits => TRUE, binds => FALSE, instance_name => 'DB03');
After we ran for a while I had a bunch of .trc files in the user_dump dir and now I wanted to run trcsess to combine all the .trc files so that I can run it through TKPROF.
trcsess output=testoutput.trc service=DB03.domainname.com
This does not give me anything. The output file seems empty. I also tried
trcsess output="testoutput.trc" service="SYS$USERS"
trcsess output=testoutput.trc action=INSERT
etc
and nothing seems to work. Anyone knows what I'm doing wrong?
Also any other suggestion on trying to trace the problem or inputs would be great. Since I may not have thought of all possible scenarios.
I used SERVICE_NAME.
select service_name from v$session where sid = sys_context('userenv','sid');
SYS$USERS
SQL> show parameter service_names
NAME TYPE VALUE
service_names string DB03.testy.com
00:25:07 [udump] oracle@db-prod32 865$ lsnrctl services
LSNRCTL for Linux: Version 10.2.0.1.0 - Production on 18-DEC-2007 00:28:02
Copyright (c) 1991, 2005, Oracle. All rights reserved.
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=10.0.1.32)(PORT=1521)))
Services Summary...
Service "DB03" has 1 instance(s).
Instance "DB03", status UNKNOWN, has 1 handler(s) for this service...
Handler(s):
"DEDICATED" established:1328 refused:0
LOCAL SERVER
Service "DB03.testy.com" has 1 instance(s).
Instance "DB03", status READY, has 1 handler(s) for this service...
Handler(s):
"DEDICATED" established:5 refused:0 state:ready
LOCAL SERVER
Service "DB03_XPT.testy.com" has 1 instance(s).
Instance "DB03", status READY, has 1 handler(s) for this service...
Handler(s):
"DEDICATED" established:5 refused:0 state:ready
LOCAL SERVER
The command completed successfullyEarlier I was running all this from the database itself, I ssh into the box and start the monitor, etc from the DB itself.
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