Trace Files and Deadlocks

Hi,
I've gotten a bunch of deadlocks in 8.1.7 and I'd like to be able to make use of the trace files, but the files are really cryptic and I can't find any documentation anywhere that explains how to read them. Moreover, I can't find any software that knows how to process them into something useful (tkprof just gives a basically empty file in return).
Anyone have any ideas?
TIA

Hi
My current application (still under development) is experiencing Oracle
deadlock problems.
The application is written using VB thru ADO and COM, Oracle 816.
My problem is that, while I can review the trace file produced, I can't
figure out what the actual deadlock is occurring on. I have seen deadlock
trace files that clearly state "table blah", but in this case, I get:
*** 2003-06-21 14:32:03.841
*** SESSION ID:(27.31211) 2003-06-21 14:32:03.810
DEADLOCK DETECTED
Deadlock graph:
---------Blocker(s)--------
Resource Name process session holds waits process session holds
waits
DX-0000003b-00000000 22 18 X 24 27
X
session 18: DID 0001-0018-0000003C session 27: DID
0001-0018-0000003C
Rows waited on:
Session 27: no row
*** 2001-06-21 14:32:03.857
ksedmp: internal or fatal error
ORA-00060: deadlock detected while waiting for resource
Is there something like TKPROF that will process the trace file and give
me
more info on what is happening? It looks like I am waiting for a resource
to be freed, but which one is the question.
thanks for any help.

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In trace file and output file showing bind variable instead of value

Hi,
database 9i
optimizer = choose(for cost based)
In my trace file and output file showing bind variable instead of value.
in my trace file 20 queries.
I alse set this parameter in session level.
alter session set events '10046 trace name context forever, level 4';
but still showing traceoutput file bind variable.
Pls help its very urgent

Can you post the query for which the bind variable values are not being shown and the trace output for the same?
Probably it is listed down somewhere when you actually executed the query among the others. Try completely analyzing your trace file..

Trace file and control files !!

hi,
I have created trace file of the control files by using 'alter database backup controlfile to trace' command. i have two questions..where can i find this trace file and how can i use this trace file to generate the control files.
Waiting for the replies...
Regards,
Saad Bin Khalid

1. You can fine the trace in the udump folder ... you can check the file time stamp to check when you created the file as it may be possible that here are other user trace files too
$ sqlplus / as sysdba
SQL> alter database backup controlfile to trace;
Database altered.
SQL> show parameter USER_DUMP_DEST
NAME TYPE VALUE
user_dump_dest string /PROD/udump
SQL> exit
$ cd /PROD/udump
$ mv PROD_ora_30823.trc cr_ctl.sql
$ vi cr_ctl.sql
edit the control file script
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Get the session trace files and also the TKPROF reports for storedprocedure

Hi ,
I am trying to find out the bottlenecks on a storedprocedure, which does a insert into a table, where the target table has lot of indexes/constraints, so i want to see, which indexes/constraints is causing the problem. so in order to do I want to get the session trace files and also the TKPROF reports to see the bottlenecks for a oracle stored procedure,
Could you please give us the list of steps to get the tracefiles and tkprof reports.

781649 wrote:
Thanks for input, i am using oracle10g standard edition. i dont think i have these tools available (DBMS_PROFILER or DBMS_HPROF). Did you even bother to try the following?
SQL> DESC DBMS_PROFILER
SQL> DESC DBMS_HPROF
I understand it would be too much to expect you to actually Read The Fine Manual
I am using bulk collect for all in my storedprocedure to insert the rows into a big table. In order to perform analysis on this bulk collect which tool will help me to identify the bottlenecks .
I want to compare background session properties for both runs (like inserting the data with indexes/constraints vs without indexes/constraints). please let me know..I am willing to bet you the problem/slowness is on the SELECT side & not the INSERT!
Just Curious
Handle:      781649
Status Level:      Newbie
Registered:      Jul 12, 2010
Total Posts:      35
Total Questions:      17 (14 unresolved)
Why so many unanswered questions?
Edited by: sb92075 on Jan 17, 2012 3:13 PM

Trace file and TKPROF

Hi All,
While tuning procedures generally I go through all queries, generate explain plans to check which is expensive and try yo tune that.Recently I got some procedures in top buffer gets list.when I gone through all queries. All using Indexes and cost is very low and accessing small tables.The number of iterations in the loop also not much.But it is taking 3 million bufffer gets for each execution.
How can I find out which part of procedure is causing these many buffer gets? Currently I dont have acces to trace files and TKprof.If I get access How it is going to help me in tuning the above procedure.
I need to explain effictively to DBA the use of trace and TKprof to get this access.

TKPROF will give buffer gets usage by query. If the same query (with bind variables) is executed several times, you will get a summary for all executions of the same query. You can also switch on and off trace with ALTER SESSION statement to limit tracing and even do it from another session (see
http://asktom.oracle.com/pls/ask/f?p=4950:8:12005269305828706290::NO::F4950_P8_DISPLAYID,F4950_P8_CRITERIA:330817260752)
For SQL trace and TKPROF usage, see
http://download-uk.oracle.com/docs/cd/B10501_01/server.920/a96533/sqltrace.htm#1018

How to monitor user logs,security logs,trace file,and performance monitori

Hi guys,
pls tel me how to monitor user logs,security logs,trace file,and performance monitoring.
thanks
regards
kamal

Hi,
you can have a look in the Netweaver administration :
http://<portal>:<port>/nwa
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Fabien.

How to find username from trace file for deadlock due to user

This is the info from the trace file.
*** 2003-08-18 08:07:40.590
*** SESSION ID:(560.60728) 2003-08-18 08:07:40.560
DEADLOCK DETECTED
Current SQL statement for this session:
SELECT S.AVAILABLE,GET_AVAIL(S.PRODUCT_ID),S.ON_HAND,S.W_PL,S.PRODUCT_GROUP,S.SIZE_ID,S.COLOR_ID,S.ONEZ,S.COST,IS_IT_KIT(:b1),
NVL(PR.R_AVAIL,0),NVL(PR.R_SOLD,0),NVL(PR.UNIT_OF_MEASURE,'QTY'),NVL(DECODE(PR.AV_CT,0,1,PR.AV_CT),1) FROM ACNTV.SKU S,ACNTV
.PRERED_QUANTITIES PR WHERE S.PRODUCT_ID = PR.PRODUCT_ID (+) AND S.PRODUCT_ID = :b1 FOR UPDATE OF S.ON_HAND,
S.W_PL,PR.R_AVAIL
The following deadlock is not an ORACLE error. It is a
deadlock due to user error in the design of an application
or from issuing incorrect ad-hoc SQL. The following
information may aid in determining the deadlock:
Deadlock graph:
---------Blocker(s)-------- ---------Waiter(s)---------
Resource Name process session holds waits process session holds waits
TX-0021004b-000125d8 366 560 X 329 135 X
TX-0008003b-000125fc 329 135 X 366 560 X
session 560: DID 0001-016E-00000002 session 135: DID 0001-0149-00000002
session 135: DID 0001-0149-00000002 session 560: DID 0001-016E-00000002
Rows waited on:
Session 135: obj - rowid = 00017FAC - AAAX+sAAPAAAS9/AAP
Session 560: obj - rowid = 0001586C - AAAVhsABXAAAAIRAAN
We know the objects ,but how to find out the username ?
Thanks

Hi;
Please see:
How To Check If a Profile Option Is Set In Oracle Application [ID 470102.1]
How to list E-Business Suite Profile Option values for all levels using SQLPlus [ID 201945.1]
How to Search all of the Profile Options for a Specific Value [ID 282382.1]
Regard
Helios

Delete TREX Trace Files and Turn TREX Off

Hi ,
We have massive amounts of TREX trace files that are taking up all of the memory. How do I delete these files? How do I know what files to delete? Also we are not using TREX in our BI server, how do I turn this OFF so that these files and never created?
Note from Moderator- don't use all caps in title as it is seen as shouting
Thanks
Edited by: Marilyn Pratt on Jan 27, 2009 12:19 PM

Hi Sanam,
For the TREX Preprocessor trace, You define the maximum file size for the input and output of documents in INI file - TREXPreprocessor.ini
The default size is set to 'Unlimited'
Please check the following values maintained in the configuration file.
Section: [ httpclient ]
Parameter: max_content_length
Default: Unlimited
Also read,
http://help.sap.com/saphelp_sm32/helpdata/en/1d/8d49cc304dd843a3a4a23d74888939/content.htm
Hope this is helpful.
Regards,
Varun

ORA-00600 , Internal Error , Trace File and 50% CPU use HTMLDB library

Hi HTMLDB team
One HTMLDB allpication processes generated an ORA-00600 error as follows :
ORA-00600: internal error code, arguments: [kohdtf048], [], [], [], [], [], [], []
The Trace file is as follows :
*** SESSION ID:(32.925) 2006-08-01 13:17:07.574
*** 2006-08-01 13:17:07.497
ksedmp: internal or fatal error
ORA-00600: internal error code, arguments: [kohdtf048], [], [], [], [], [], [], []
ORA-06502: PL/SQL: numeric or value error
ORA-06502: PL/SQL: numeric or value error
ORA-06502: PL/SQL: numeric or value error
Current SQL statement for this session:
declare
rc__ number;
begin
owa.init_cgi_env(:n__,:nm__,:v__);
htp.HTBUF_LEN := 255;
null;
null;
null;
null;
f(p=>:p);
if (wpg_docload.is_file_download) then
rc__ := 1;
wpg_docload.get_download_file(:doc_info);
null;
null;
null;
commit;
else
rc__ := 0;
null;
null;
null;
commit;
owa.get_page(:data__,:ndata__);
end if;
:rc__ := rc__;
end;
Also , this process has been consuming an unacceptable amount of cpu :
18146 oracle 1 0 0 3924M 1840M cpu/1 167:24 49.62% oracle
OEM reports the lastest SQL run by this process is the same as above.
Is there anyway I could upload the trace file for you to have a look at ?
Thanks
Indira

Hi HTMLDB team
One HTMLDB allpication processes generated an ORA-00600 error as follows :
ORA-00600: internal error code, arguments: [kohdtf048], [], [], [], [], [], [], []
The Trace file is as follows :
*** SESSION ID:(32.925) 2006-08-01 13:17:07.574
*** 2006-08-01 13:17:07.497
ksedmp: internal or fatal error
ORA-00600: internal error code, arguments: [kohdtf048], [], [], [], [], [], [], []
ORA-06502: PL/SQL: numeric or value error
ORA-06502: PL/SQL: numeric or value error
ORA-06502: PL/SQL: numeric or value error
Current SQL statement for this session:
declare
rc__ number;
begin
owa.init_cgi_env(:n__,:nm__,:v__);
htp.HTBUF_LEN := 255;
null;
null;
null;
null;
f(p=>:p);
if (wpg_docload.is_file_download) then
rc__ := 1;
wpg_docload.get_download_file(:doc_info);
null;
null;
null;
commit;
else
rc__ := 0;
null;
null;
null;
commit;
owa.get_page(:data__,:ndata__);
end if;
:rc__ := rc__;
end;
Also , this process has been consuming an unacceptable amount of cpu :
18146 oracle 1 0 0 3924M 1840M cpu/1 167:24 49.62% oracle
OEM reports the lastest SQL run by this process is the same as above.
Is there anyway I could upload the trace file for you to have a look at ?
Thanks
Indira

APEX Overhead and trace files

Hey everyone,
We've been asked to "stress" and "load" test our application as it is predicted our user base might grow in the near future (company acquisitions/etc)...
Unfortunately, there is concern about the overhead added by APEX. From everything I've read, I do not personally believe APEX adds much to each page view (as compared to our own self-managed data), however I need to PROVE this to our system admins/etc. Simply referencing things on the internet like "APEX doesn't add much overhead" doesn't exactly make the case.
To accomplish my mission, I've done the following:
1) generated a trace file on a test page by appending the following to the end of the URL:
"&p_trace=YES" (without quotes)
2) found the location of trace files using:
select value from v$parameter where name = 'user_dump_dest';
3) found the exact trace file for my apex page view
grep -l "3853406964369" *.trc (where the number in quotes was the session id taken from my apex url)
4) formatted the trace file using tkprof from the linux command line:
tkprof orcl_ora_24115.trc tkprof_output
Now, I'm in the process of examining the file. It is great that it shows everything involved in generating a page! A couple of quick questions though.
A) is it safe to assume that this trace file (found by using my method above in steps 1-4) only contains records associated with my single apex page view? My fear is that just because a file contains my session id, that does not guarantee that other random stuff from other sessions is also in the same file (sorry i'm new to trace files and especially trace files generated by apex).
B) if i view a second page with the trace=YES, will a second file get generated or does it get combined into 1 file? how can i easily tell which file is for which page view?
C) is there an easy way to differentiate what queries would normally be made by oracle (regardless of the UI) versus queries ran by APEX specifically (which would not occur if we were using PHP for a front end)?
Specifically, I see queries (similar to the following) that do not appear to be APEX specific from what I can tell:
-- example 1 --
select i.obj#,i.ts#,i.file#,i.block#,i.intcols,i.type#,i.flags,i.property,
i.pctfree$,i.initrans,i.maxtrans,i.blevel,i.leafcnt,i.distkey,i.lblkkey,
i.dblkkey,i.clufac,i.cols,i.analyzetime,i.samplesize,i.dataobj#,
nvl(i.degree,1),nvl(i.instances,1),i.rowcnt,mod(i.pctthres$,256),
i.indmethod#,i.trunccnt,nvl(c.unicols,0),nvl(c.deferrable#+c.valid#,0),
nvl(i.spare1,i.intcols),i.spare4,i.spare2,i.spare6,decode(i.pctthres$,null,
null,mod(trunc(i.pctthres$/256),256)),ist.cachedblk,ist.cachehit,
ist.logicalread
from
ind$ i, ind_stats$ ist, (select enabled, min(cols) unicols,
min(to_number(bitand(defer,1))) deferrable#,min(to_number(bitand(defer,4)))
valid# from cdef$ where obj#=:1 and enabled > 1 group by enabled) c where
i.obj#=c.enabled(+) and i.obj# = ist.obj#(+) and i.bo#=:1 order by i.obj#
-- example 2 --
select intcol#, toid, version#, intcols, intcol#s, flags, synobj#
from
subcoltype$ where obj#=:1 order by intcol# asc
and I see queries that are definitely APEX related (based on the existence of references to wwv objects):
-- example 3 --
SELECT ID, BRANCH_NAME, BRANCH_ACTION, BRANCH_POINT, BRANCH_TYPE,
BRANCH_CONDITION, BRANCH_CONDITION_TEXT, BRANCH_CONDITION_TYPE,
BRANCH_WHEN_BUTTON_ID, NVL(SAVE_STATE_BEFORE_BRANCH_YN,'N'),
SECURITY_SCHEME
FROM
WWV_FLOW_STEP_BRANCHES WHERE FLOW_ID = :B4 AND FLOW_STEP_ID = :B3 AND
BRANCH_POINT = 'BEFORE_HEADER' AND (REQUIRED_PATCH IS NULL OR
(REQUIRED_PATCH > 0 AND (:B2 IS NULL OR INSTR(:B2 ,
':'||TO_CHAR(REQUIRED_PATCH)||':') = 0) ) OR (REQUIRED_PATCH < 0 AND (:B1
IS NULL OR INSTR(:B1 ,':'||TO_CHAR(0-REQUIRED_PATCH)||':') = 0) ) ) ORDER
BY BRANCH_SEQUENCE, ID
and then of course it's easy for me to identify any queries that are based on our code because I recognize the object names we use.
In the mean-time I'm starting to look into how to interpret trace files (outside of the context of apex).
My biggest concern is that I do not want to "ding" or "tax" APEX for queries that it had nothing to do with and that would be ran by oracle regardless of the UI we use to "view a page".
Thanks!

Move older audit files to a different filesystem until you find someone being able to define what files can be deleted.
Regards
Gustavo Restuccia

Useful logs and trace files

Hello experts, for our Netweaver AS administration, I am in charge of periodically checking logs and trace files. I would like to know which are the most useful logs and trace files and the information each one will hold. I am familiar with "DefaultTrace.trc", and as of today it is the only one I have used, but I believe I should also be looking at other logs and trace files.
Any suggestions?

Hi Pedro,
If you are talking about JAVA only system defaulttrace is the best log/trace to look, there are other log files like application log, but maybe the best way to check you logs is using NWA (NetWeaver Administrator) on the following URL on your JAVA system:
http://<hostname>:<port>/nwa
From there you need to go to Monitoring -> Logs and Traces and then Predefined View/SAP logs.
My other recommendation is to change the severity level to ERROR for all you JAVA component within the Visual Administrator -> ServeNode -> Services -> Log Configurator -> Locations, otherwise it is possible that you see a lot of garbage on the defaulttraces. Anyway you can change the severity level per component, on demand, to investigate any possible problem.
The work directory is very imporant and maybe you can also check the file "dev_serverX" that also will give you information about any out of memory conditions and garbage collection activity if you have these values set for the server node using the config tool:
-verbose:gc
-XX:+PrintGCDetails
-XX:+PrintGCTimeStamps
You can find more information on here:
http://help.sap.com/saphelp_nw70/helpdata/en/ac/e9d8a51c732e42bd0e7de54b9ff4e2/content.htm
Hopefully this help you, let me know if you need more information,
Zareh

Not able to get the actual plan from trace file

Hi all
I have a Db package and want to get actual execution plan of all the statements in that pakcage it does provides the plan for System's statements but does not displays the plan for Sql statements
DB version 9.2.0 using the following sequence of insructions
set timing on
set serveroutput on
alter session set events '10046 trace name context forever ,level 12';
begin
run_service.collect_data(sysdate);
end;
alter session set sql_trace=false;
exit; ---exit from Sql
now look at the output
select distinct obj#,containerobj#,pflags,xpflags,mflags
from
sum$, suminline$ where sumobj#=obj# and inline#=:1
call count cpu elapsed disk query current rows
Parse 1 0.00 0.00 0 0 0 0
Execute 1 0.00 0.00 0 0 0 0
Fetch 1 0.00 0.00 1 1 0 0
total 3 0.00 0.00 1 1 0 0
Misses in library cache during parse: 0
Optimizer goal: CHOOSE
Parsing user id: SYS (recursive depth: 2)
Rows Row Source Operation
0 SORT UNIQUE
0 NESTED LOOPS
0 TABLE ACCESS BY INDEX ROWID SUMINLINE$
0 INDEX RANGE SCAN I_SUMINLINE$_2 (object id 1614116)
0 TABLE ACCESS BY INDEX ROWID SUM$
0 INDEX UNIQUE SCAN I_SUM$_1 (object id 319)
Elapsed times include waiting on following events:
Event waited on Times Max. Wait Total Waited
---------------------------------------- Waited ---------- ------------
db file sequential read 1 0.00 0.00
SELECT SEQ_NUM, S_DATE, S_TIME, CSTATUS, G_SERVICE,
B_REFERENCE, V_REFERENCE, M_PRIORITY
FROM GL_HIST
ORDER BY S_DATE DESC, S_TIME DESC
call count cpu elapsed disk query current rows
Parse 1 0.01 0.01 0 0 0 0
Execute 2819 0.37 0.32 0 0 0 0
Fetch 2819 2.50 20.47 2786 20164 0 2819
total 5639 2.88 20.81 2786 20164 0 2819
Misses in library cache during parse: 1
Optimizer goal: CHOOSE
Parsing user id: 15550 (recursive depth: 1)
Elapsed times include waiting on following events:
Event waited on Times Max. Wait Total Waited
---------------------------------------- Waited ---------- ------------
db file sequential read 2786 0.05 18.19
latch free 4 0.04 0.06
UPDATE G_ORIG SET G_SERVICE = :B1
WHERE
SEQ_NUM = :B5 AND S_DATE = :B4 AND S_TIME = :B3 AND
C_STATUS = :B2 AND NVL(G_SERVICE, '+') <> NVL(:B1, '+')
call count cpu elapsed disk query current rows
Parse 1 0.00 0.03 0 0 0 0
Execute 3731 0.74 0.99 261 18712 119 54
Fetch 0 0.00 0.00 0 0 0 0
total 3732 0.74 1.02 261 18712 119 54
Misses in library cache during parse: 1
Optimizer goal: CHOOSE
Parsing user id: 15550 (recursive depth: 1)
Elapsed times include waiting on following events:
Event waited on Times Max. Wait Total Waited
---------------------------------------- Waited ---------- ------------
db file sequential read 261 0.01 0.19
latch free 9 0.01 0.04
COMMIT

Remove the line alter session set sql_trace=false and just exit/disconnect. The explain plain is contained in the STAT lines in the trace file and are only written when the cursor closes. If you turn off tracing before the cursor closes the STAT lines will not get written.

How to get the trace file name for current running application?

Hi, I want to know if it is possible to get the file name directly for current running application instance which is launched by javaws.
There is a property "deployment.user.logdir" tells the log directory, it would be great if a file name property
is available. something like "instance.trace.file".
Our application wants it because we would like our client send use the application log by clicking a "send error"
button, the codes finds the trace file and compress it and send it by using a smtp server.
In 1.5, we can do it by using a shell program.

I found other asked it before, but I tried to set both properties, but neither works. my sun JRE version :java version "1.6.0_04"
<property
name="deployment.javaws.traceFileName"
value="abcfefsfdsf"/>
<property
name="deployment.javapi.trace.filename"
value="235235235"/>
But it always write to one trace file with name lik javaws63645.trace

Ubormal trace file generation in 11.1.0.7

oracle version
Oracle Database 11g Enterprise Edition Release 11.1.0.7.0 - 64bit Production
PL/SQL Release 11.1.0.7.0 - Production
CORE 11.1.0.7.0 Production
TNS for 64-bit Windows: Version 11.1.0.7.0 - Production
NLSRTL Version 11.1.0.7.0 - Production
OS
Windows 2008 EE R1 SP2
Problem
My trace files generated every 30 second and its drive me crazy i have to delete to maintain space of the server
i check the alert logfile and it does not show anything suspecious here are a couple of lines from the alert.log file
Sat Jan 22 00:16:52 2011
Thread 1 advanced to log sequence 117 (LGWR switch)
Current log# 1 seq# 117 mem# 0: E:\DATA\ORACLE\PMDB\REDO01A.LOG
Current log# 1 seq# 117 mem# 1: E:\DATA\ORACLE\PMDB\REDO01B.LOG
Sat Jan 22 02:00:00 2011
Clearing Resource Manager plan via parameter
Sat Jan 22 06:00:00 2011
Setting Resource Manager plan SCHEDULER[0x2C49]:DEFAULT_MAINTENANCE_PLAN via scheduler window
Setting Resource Manager plan DEFAULT_MAINTENANCE_PLAN via parameter
Sat Jan 22 06:00:03 2011
Begin automatic SQL Tuning Advisor run for special tuning task "SYS_AUTO_SQL_TUNING_TASK"
End automatic SQL Tuning Advisor run for special tuning task "SYS_AUTO_SQL_TUNING_TASK"
Sat Jan 22 06:00:36 2011
Thread 1 advanced to log sequence 118 (LGWR switch)
Current log# 2 seq# 118 mem# 0: E:\DATA\ORACLE\name\REDO02A.LOG
Current log# 2 seq# 118 mem# 1: E:\DATA\ORACLE\nameREDO02B.LOG
Sat Jan 22 11:09:15 2011
Thread 1 advanced to log sequence 119 (LGWR switch)
Current log# 1 seq# 119 mem# 0: E:\DATA\ORACLE\name\REDO01A.LOG
Current log# 1 seq# 119 mem# 1: E:\DATA\ORACLE/name\REDO01B.LOG
Sat Jan 22 11:37:19 2011
Thread 1 advanced to log sequence 120 (LGWR switch)
Current log# 2 seq# 120 mem# 0: E:\DATA\ORACLE\nam\REDO02A.LOG
Current log# 2 seq# 120 mem# 1: E:\DATA\ORACLE\name\REDO02B.LOG
And i have cheched the trace files and here are a couple of lines
*** 2011-01-19 15:23:54.265
*** SESSION ID:(43.21827) 2011-01-19 15:23:54.265
*** CLIENT ID:() 2011-01-19 15:23:54.265
*** SERVICE NAME:(name) 2011-01-19 15:23:54.265
*** MODULE NAME:(OMS) 2011-01-19 15:23:54.265
*** ACTION NAME:() 2011-01-19 15:23:54.265
XS Users and Roles -- OCI Info
kzxupnamread error -- 942: ORA-00942: table or view does not exist
XS Users and Roles -- OCI Info
kzxupnamread error -- 942: ORA-00942: table or view does not exist
Trace file e:\app\oracle\diag\rdbms\pmdb\pmdb\trace\pmdb_ora_7688.trc
Oracle Database 11g Enterprise Edition Release 11.1.0.7.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
Windows NT Version V6.0 Service Pack 2
CPU : 16 - type 8664, 8 Physical Cores
Process Affinity : 0x0000000000000000
Memory (Avail/Total): Ph:8575M/16372M, Ph+PgF:24932M/32827M
Instance name: name
Redo thread mounted by this instance: 1
Oracle process number: 18
Windows thread id: 7688, image: ORACLE.EXE (SHAD)
Would you please help me in identifying a solution to this problem

Thanks everybody ,
I have communciated to Oracle Support below is their reply :-
<< Based on the Developer comment in the bug, "This belongs to EXTENDED SECURITY and don't have conditions to run, it is addressed in patch 7019661 and solved in 11.2", >>
i have to test the patch in the test environment and than i will do it in Live
Thank you again

Question about Y_?????? trace files

We have a SAP ERP 6.0 system runninng in Windows. I am checking the trace files in our system, and I have found that there are a lot of Y_??????. I have been looking for information about them, but I cannot find it. Does anyone know how and why these files are generated, and if I can safely delete them?
Thank you for your help,
Jose

Hi Jose,
Is the file called Y_18001 or Y_<number>. These are just Developer Trace files and you can safely delete those file.
Refer to below link
http://help.sap.com/saphelp_47x200/helpdata/en/1f/8311664bc511d189750000e8322d00/content.htm
Regards,
Arjun

Trace Files and Deadlocks

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