PL/SQL :: Interpreting Trace File
Jul 24, 2012
i am using 10.2.0.4.0 version of oracle.I am having trace file info as below, for one of the query. So how should i interpret the trace file? What is the issue in the query, and the scope of improvement in the query? I have removed the query and its plans from the trace file, i have only posted the wait sections.
call count cpu elapsed disk query current rows
------- ------ -------- ---------- ---------- ---------- ---------- ----------
Parse 1 0.14 0.13 0 0 1 0
Execute 1 6.63 162.12 33540 72921 383 0
Fetch 17272 178.89 1933.95 274835 3147603 20 259063
------- ------ -------- ---------- ---------- ---------- ---------- ----------
total 17274 185.66 2096.21 308375 3220524 404 259063
[code]....
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Jul 2, 2013
I am getting below mentioned error in alertlog file very frequently.
ORA-06512: at "CTXSYS.DRUE", line 160
ORA-06512: at "CTXSYS.TEXTINDEXMETHODS", line 747
ORA-06512: at "BEE_CODE_05252013.SS_INDEX_JOB_PKG", line 496
Errors in file /beprddb/diag/rdbms/beprddb/beprddb/trace/beprddb_ora_10581.trc:
Errors in file /beprddb/diag/rdbms/beprddb/beprddb/trace/beprddb_ora_10581.trc:
Errors in file /beprddb/diag/rdbms/beprddb/beprddb/trace/beprddb_ora_10581.trc:
Tue Jul 02 15:31:15 2013
[code]....
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Aug 11, 2011
I need to take the database trace of each page of my web application. I am giving the following commands.
BEGIN
dbms_monitor.session_trace_enable(session_id=>122, serial_num=>NULL, waits=>true, binds=>true);
END;
Accessing the web application. Once it renders completely, I am executing the following command.
BEGIN
dbms_monitor.session_trace_disable(session_id=>122);
END;
In the user_dump_dest folder, I am expecting to see a new trace whenever I execute these commands. But the same trace file is getting updated. How do I make oracle to create a new trace for each iteration. I am using Oracle 11g Release on CentOS 5.x
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Apr 18, 2013
We are running Oracle 11.2.0.3 on a Windows 2008 R2 Server with an app server on the same. Our app has a search function that has recently started timing out on us. Sometimes intermittently but often now. I've ran a trace in our dev environment, below code, in an attempt to track down the issue but I'm finding very little useful information in relation to the errors I see in the trace file below. My experience in deciphering trace code is nill so how to interpret these errors.
*** 2013-04-18 14:27:23.353
*** SESSION ID:(3093.63097) 2013-04-18 14:27:23.353
*** CLIENT ID:() 2013-04-18 14:27:23.353
*** SERVICE NAME:(SYS$USERS) 2013-04-18 14:27:23.353
*** MODULE NAME:(w3pw.exe) 2013-04-18 14:27:23.353
*** ACTION NAME:() 2013-04-18 14:27:23.353
[code]....
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Jul 26, 2013
As a sys user i want to trace a user session. so i am using
SQL> EXEC DBMS_SYSTEM.set_sql_trace_in_session(sid=>123, serial#=>1234, sql_trace=>TRUE);SQL> EXEC DBMS_SYSTEM.set_sql_trace_in_session(sid=>123, serial#=>1234, sql_trace=>FALSE);
to trace. but this trace file is mixing with another trace files in udump. did some Google and found that we can use
ALTER SESSION SET TRACEFILE_IDENTIFIER = "MY_TEST_SESSION".
but this will generate trace file for sys user account not for the desired user session. how we can define trace file name for desired user session trace.
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Nov 19, 2011
after apply patch 10.2.0.4 for 2 10gr2 node i tried to start asm on 2 node but i found that the 1st node (master node)
can not started but the second node is ok and this error found in trace file for lmon.trc
kjxgmpoll: terminate the CGS reconfig.
Error: KGXGN polling error (15)
error 29702 detected in background process
ORA-29702: error occurred in Cluster Group Service operation
ksuitm: waiting up to [5] seconds before killing DIAG
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Mar 11, 2013
Oracle version: 11.2.0.3.0 Enterprise Edition
OS - IBM/AIX RISC System/6000
I am trying to generate a trace file from a piece of code executed by java server. What I asked the java developer to do is to place this block immediately after establishing a connection:
BEGIN
EXECUTE IMMEDIATE 'ALTER SESSION SET TRACEFILE_IDENTIFIER = ''M1''';
dbms_monitor.session_trace_enable(waits => FALSE, binds => TRUE);
END;And at the end of the logical java block of code:
BEGIN
dbms_monitor.session_trace_disable;
END;
What I want to know is how many rows the java server fetches after executing one particular select statement, because they complain about receiving less in count rows from the select statement than expecting. For example, if I execute the same sql query in sqlplus session, then I fetch let's say 1000 rows. When the same query is executed from java side, the fetched rows are less in count, let's say 500.And because I doubt it, I wanted to trace to see what actually is executed and how.the excerpt of the trace file I see exactly the same query which I execute myself in a sqplus session.is no fine-grained control on the udnerlying tables in the query.
And my question is, how to interpret the FETCH phase of the cursor (for the select statement)?example, if I see one FETCH for this cursor, does this mean that the java server has fetched only one row?If I see 100 FETCHes, does this mean they fetched 100 rows from the cursor?
Here is a short excerpt from the trace file (don't crucify me for the query and the obvious denormalized design of the tables, this is not invented by me):
PARSING IN CURSOR #4573587152 len=667 dep=0 uid=737 oct=3 lid=737 tim=17685516462413 hv=954980718 ad='70000006d3e4940' sqlid='69pm96nwfrqbf'
select /* ordered */ o.id, nvl(o.par_id, -1) as par_id, o.NAME_GER, o.NAME_ENG, o.NAME_ESP, o.NAME_ITL,o.NAME_FRA, decode(lo.lflag, 'Y', 'L', 'N') as leaf_or_node, lo.distance + 1 as "LEVEL", to_char(o.beg_date,
[code]...
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Nov 8, 2010
I got the below message in trace file. What does the line "swap info: free = 0.00M alloc = 0.00M total = 0.00M" trying to say?
I have
RAM=1.5G
Swap=3.5G
Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - Production With the Partitioning, OLAP and Data Mining options ORACLE_HOME = /home/oracle
System name:Linux
Node name:linuxdev
Release:2.6.5-7.97-default
Version:#1 Fri Jul 2 14:21:59 UTC 2004
[Code]....
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Jun 16, 2011
I am working on tuning the performance of one of the concurrent request in our 11i ERP System having database 11.1.0.7
I had enabled oradebug trace for the request and generated tkprof out of it. For below query which is taking time , I found that , in the trace generated , wait event is "db file sequential read" on an PO_LINES_N10 index but in the generated tkprof , for the same below query , the full table scan for PO_LINES_ALL is happening , as that table is 600 MB in size.
Below is the query ,
===============
UPDATE PO_LINES_ALL A
SET A.VENDOR_PRODUCT_NUM = (SELECT SUPPLIER_ITEM FROM APPS.IRPO_IN_BPAUPDATE_TMP C WHERE BATCH_ID = :B1 AND PROCESSED_FLAG = 'P' AND ACTION = 'UPDATE' AND C.LINE_ID =A.PO_LINE_ID AND ROWNUM = 1 AND SUPPLIER_ITEM IS NOT NULL),
LAST_UPDATE_DATE = SYSDATE
===============
Index PO_LINES_N10 is on the column LAST_UPDATE_DATE , logically for such query , index should not have got used as that indexed column is not in select / where clause.
Also, why there is discrepancy between tkprof and trace generated for the same query .
So , I decided to INVISIBLE the index PO_LINES_N10 but still that index is getting accessed in the trace file .
I have also checked the below parameter , which is false so optimizer should not make use of invisible indexes during query execution.
SQL> show parameter invisible
NAME TYPE VALUE
----------- optimizer_use_invisible_indexes boolean FALSE
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Apr 10, 2013
i want to know about trace file and TKPROF. any example.
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Nov 19, 2012
I am having enq: TX - row lock contention in top wait event. it is occurring between 10pm - 2am.
We are having sqlloader job running every one hour(conventional path). But for the specific period of time i am getting "Global Enqueue Services Deadlock detected". Between 10-5. I analyzed related trace file it is make me little confusion.I found there are four insert query culprit for this locking. out of four sql , tow of them are ran by same SID, other two insert ran by same id. I got confused because how same sid locking them self. trace file below. during this period oracle maintenance window is active.
Trace file:
*** 2012-10-09 03:40:31.135
user session for deadlock lock 0x15365e060
sid: 1104 ser: 22256 audsid: 8797820 user: 49/iurth flags: 0x45
pid: 71 O/S info: user: oracle, term: UNKNOWN, ospid: 8601
image: oracle@sgh0909
client details:
[code]....
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Oct 19, 2010
In Trace file I am always geeting one error "Error encountered: ORA-10980" due to which MVs fails . how to overcome from this error?
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Oct 4, 2012
In my database smon tracefile was huge,now we want to delete the same,I also tried with ordebug operation but no use, delete tracfile which Smon generates.
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Jan 6, 2011
I am trying to get a readable version of a .trc file generated by Oracle
10.2.0.4.0 with tkprof, but I still have been unable to get this done...and this is what I have already tried:
tkprof /u00/app/oracle/admin/DB/udump/*BITN1234.trc /batch/salidas/student/BITNTRACE.txt
And whether I run this from my PL/SQL process (PRO*C) or from a command line, it returns:
TKPROF: Release 10.2.0.4.0 - Production on Thu Jan 6 11:04:38 2011
Copyright (c) 1982, 2007, Oracle. All rights reserved.
could not open trace file /u00/app/oracle/admin/DB/udump/BITN1234.trc
I have already (from my PRO*C code and from command line)...
- made sure that the file is in the directory.
- run this from the udump directory, where the .trc file is...didn't work.
- run this from the udump directory, and specifying explicitely the
complete path anyway in the tkprof line (redundant...I know)...didn't work.
- tried to copy the file to another directory in order to run the tkprof,
and it returns:
cp: BITN1234.trc: The file access permissions do not allow the specified
action.
- tried changing privileges with:
chmod a+r BITN1234.trc
and it returns:
chmod: BITN1234.trc: Operation not permitted.
- tried to run tkprof01 instead of tkprof and it returns:
We trust you have received the usual lecture from the local System Administrator. It usually boils down to these two things:
#1) Respect the privacy of others.
#2) Think before you type.
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Nov 16, 2011
I executed a query which executed quickly (1.7 seconds) but since its output took time in displaying on the console the time shown by 'set timing on was 39.5 seconds
also I took trace (tkprof) for the same.My query is why the timings under 'Total Waited' (43.19 and 1.69) are not added to the elapsed time 1.83 seconds
call count cpu elapsed disk query current rows
------- ------ -------- ---------- ---------- ---------- ---------- ----------
Parse 1 0.00 0.00 0 0 0 0
Execute 1 0.00 0.06 0 10 0 0
Fetch 758 0.03 1.77 0 0 0 11345
------- ------ -------- ---------- ---------- ---------- ---------- ----------
total 760 0.03 1.83 0 10 0 11345
[code]....
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Apr 8, 2013
I am trying to install Oracle 11g R2(64bit) on Windows 7 64 bit OS. While Creating Database using DBCA. I am getting error. Below is the screenshot.
Below is the error in the Trace file...
oracle.sysman.assistants.util.step.StepExecutionException:
Error in Process: C:Oracleapporacleproduct11.2.0serverinorapwd.exe
Unable to find error file %ORACLE_HOME%RDBMSopw<lang>.msb
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Apr 9, 2012
I have just migrated database to 11.2 ..Migration is successfull and now database is in open mode working fine.BUT i m getting following mesage in alert log file
"Time drift detected. Please check VKTM trace file for more details."I m using windows platform.
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May 7, 2010
We are facing one issue on one of the database. The database is generating large trace files(14000) from last two days. That consumes around 15G space on the disk. And the content of the trace files is not having any meaningful message to debug:
cat /apps/oracle/admin/fs90uat/bdump/fs90uat_p050_23966.trc
*** TRACE DUMP CONTINUES IN FILE /apps/oracle/admin/fs90uat/bdump/fs90uat_p050_23966.trc ***
Dump file /apps/oracle/admin/fs90uat/bdump/fs90uat_p050_23966.trc
*** TRACE DUMP CONTINUED FROM FILE /apps/oracle/admin/fs90uat/bdump/fs90uat_p050_23966.trc ***
... (Many lines with above message)
The alert log is having one repeated error yesterday:
Thu May 6 22:00:03 2010
Errors in file /apps/oracle/admin/fs90uat/bdump/fs90uat_j000_11811.trc:
ORA-12012: error on auto execute of job 2647927
ORA-04063: ORA-04063: package body "ORACLE_OCM.MGMT_DB_LL_METRICS" has errors
ORA-06508: PL/SQL: could not find program unit being called: "ORACLE_OCM.MGMT_DB_LL_METRICS"
ORA-06512: at line 1
The corresponding trace file is having error:
Oracle Database 10g Enterprise Edition Release 10.2.0.4.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
ORACLE_HOME = /apps/oracle/product/10.2.0/db_1
System name: SunOS
Node name: corpqadb30
[Code] .......
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Jun 3, 2013
I have a deadlock trace file to analyse and i used to be able to see the rowid as a 16 bit hex value in the trace file, which i could then query on to get the actual real world row name.I see in the 11GR2 deadlock trace the formatting is different and for the life of me i am unable to see the rowid. Has Oracle stopped reporting this now, or is their another way to get this value? The deadlock graph shows me
*** 2013-05-14 14:49:15.047
Submitting asynchronized dump request [28]
Global blockers dump end:-----------------------------------
Global Wait-For-Graph(WFG) at ddTS[0.16e] :
BLOCKED 0x4362890f8 5 wq 2 cvtops x1 TX 0x3d001b.0x18a3021 [FF000-0001-00000002] inst 1
BLOCKER 0x436288f38 5 wq 1 cvtops x28 TX 0x3d001b.0x18a3021 [102000-0001-00000002] inst 1
[code]....
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May 28, 2012
taking the backup of a control file, as i am taking online backup, archive mode.
At first i have executed the statement
sql> alter database backup control file to trace;
then i have removed the control files and enterd some data in a table and committed it.As my oracle is not shutting down, so i shut aborted it. Now after saving the last file from the udump as obkp.sql i am unable to edit this file and use.
how to edit and use this file, so that i can startup my database normally.
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May 9, 2013
i have 3 tables
T1
node_id
T2
node_id, object_type
T3
node_id, object_type
my requirement is T1 node_id exists in which table(T2 or T3). If T1 node_id exists in T2 then return T2 object_type else return T3 object_type
sample data
==========
create table T1
(
node_id number(4)
);
create table T2
(
node_id number(4),
object_type varchar2(15)
);
create table T3
(
node_id number(4),
object_type varchar2(15)
);
begin
insert into T1 values(10);
insert into T1 values(20);
insert into T1 values(30);
insert into T1 values(40);
insert into T1 values(50);
insert into T1 values(60);
insert into T1 values(70);
insert into T1 values(80);
insert into T2 values(10, 'Concept');
insert into T2 values(20, 'Concept');
insert into T2 values(110, 'Concept');
insert into T2 values(118, 'Concept');
insert into T2 values(136, 'Concept');
insert into T2 values(128, 'Concept');
insert into T2 values(80, 'Concept');
insert into T3 values(10, 'Grouping');
insert into T3 values(120,'Grouping');
insert into T3 values(130,'Grouping');
insert into T3 values(140,'Grouping');
insert into T3 values(150,'Grouping');
insert into T3 values(160,'Grouping');
insert into T3 values(70,'Grouping');
insert into T3 values(180,'Grouping');
insert into T3 values(260,'Grouping');
insert into T3 values(270,'Grouping');
insert into T3 values(280,'Grouping');
end;
/
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Aug 28, 2012
i read some articals of how to trace oracle sessions and i have some question
i use database 10g
trace vs event ??? different between them ????
how to trace individual statement i hope to give me this point in ex: due to i can't get the sql_id ,how to know the sql_is of specify statement??
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Jul 12, 2012
I have a procedure in the live environment , which operate in 2 mode.
1 regular load at 10 min
2 nightly
The code is same except they set the last loaded time for both in 2 dfferent rows, so that next time run will get incremental data.
I can trace this procedure on mode 1 that is is scheduled but unable to find how the 2nd one is getting trigger every night. there is no jobs corresponding to that. Is there any way i can find which method is trigger the procedure during night.
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Nov 15, 2010
un-documented parameter _trace_files_public / I want to set this to true so my app team can review trace files. better way to proceed to open read permissions for non oracle users.
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Oct 14, 2012
I wanted to trace DDLs that comes from application and did this .
EXECUTE DBMS_MONITOR.SESSION_TRACE_ENABLE(session_id => 1727, serial_num => 14319,waits => FALSE);
<waited till session completed all operation(ie,drop indexes)>
EXECUTE DBMS_MONITOR.SESSION_TRACE_DISABLE(session_id => 1727, serial_num => 14319);
Now i looked at tkprof output, I dont see any single DDL . Is this not the way to trace DDLs.
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Jan 25, 2013
Customer is running a Job from a Schema which is generating multiple sessions . I want the all the sessions to be traced from that particular Schema .
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Mar 10, 2010
I want to trace the time it takes to refresh the MV for the last few runs. How can i find that? The MV runs every 7 hours..for the last few times it runs, I would like to trace the time it took to complete.
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Jun 4, 2011
I have created a fast refresh materialized view.now i wanted to know my materialized view how long processing for refresh.which table stores this information with syntax.
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Nov 20, 2012
I have written a windows service which grants and revokes based on request. How to trace in oracle data dictionary if those privilages were granted and at what time to whom and by whom. I mean is there any table which can be queried for past privilages granted to users.
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May 24, 2013
I know that this query had been executed again the db, but the person is no longer here. Last run was about 3~4 months ago.
SELECT Subject_ID,
TO_CHAR (completed_date, 'mm/dd/yyyy'), status
FROM ADMINDBG_USER.adbt_master
...
[ADMINDBG_USER.adbt_master] is not a part of [dba_tables]. [ADMINDBG_USER.adbt_master] must be a view/procedure/a sort.
I have no luck to find what view/procedure/syntax is populating the data onto [ADMINDBG_USER.adbt_master].
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