Trying to manage the background trace files

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• background trace file

  What is the use of the background trace file?
  How to stop the generation of trace files background?
  Version of DB - 10 g
  OS-win7

  Yes...

  You can set any size depending on the space on your server.

• Blocker withdraws the deadlock trace file (self)

  Hello
  
  Recently, I had a problem on a 10.2.0.4 database to single instance where blockages are produced. The following test case reproduced the problem (I create three tables parent, a child table with foreign keys indexed to all parents three tables and a procedure that performs an insert in the child table in a standalone transaction):
  

  create table parent_1(id number primary key);
  
  create table parent_2(id number primary key);
  
  create table parent_3(id number primary key);
   
  create table child( id_c number primary key,
                     id_p1 number,
                     id_p2 number,
                     id_p3 number,
                     constraint fk_id_p1 foreign key (id_p1) references parent_1(id),
                     constraint fk_id_p2 foreign key (id_p2) references parent_2(id),
                     constraint fk_id_p3 foreign key (id_p3) references parent_3(id)
                     );
   
  create index i_id_p1 on child(id_p1);
  
  create index i_id_p2 on child(id_p2);
  
  create index i_id_p3 on child(id_p3);
  
  create or replace procedure insert_into_child as
  pragma autonomous_transaction;
  begin
    insert into child(id_c, id_p1, id_p2, id_p3) values(1,1,1,1);
    commit;
  end;
  /
   
  insert into parent_1 values(1);
  
  insert into parent_2 values(1);
  
  commit;

  And now the action that causes the deadlock:

  SQL> insert into parent_3 values(1);
  
  1 row created.
  
  SQL> exec insert_into_child;
  BEGIN insert_into_child; END;
  
  *
  ERROR at line 1:
  ORA-00060: deadlock detected while waiting for resource
  ORA-06512: at "SCOTT.INSERT_INTO_CHILD", line 4
  ORA-06512: at line 1

  My question is: How can I determine which integration into the CHILD table waiting for? He could wait on a combination of these, PARENT_3, PARENT_2, PARENT_1, or even on the CHILD if I tried to insert a primary key that is duplicated in the CHILD. Since we have the full test case, we know that he was waiting on PARENT_3 (or better said, he expected to perform a commit / rollback of the transaction 'parent'), but is it possible to determine that only from the deadlock trace file? I ask that because to identify the problem, I had to perform redo log mining, tracing pl/sql with DBMS_TRACE and manual debugging on a clone of the production database that has been restored to a SNA just before blocking is product. So, I had to do a lot of work to get to the trainer table and if this information is already in the deadlock trace file, it would have saved me a lot of time.
  
  Here is the deadlock trace file. In section "DML LOCK", I assumed that the child table (tab = 227042) holds a 3 way locks (SX), all other tables of three parents have a mode 2 locks (SS), but from this excerpt, I see that parent_3 (tab = 227040) blocks the children insert:
  

  Deadlock graph:
                         ---------Blocker(s)--------  ---------Waiter(s)---------
  Resource Name          process session holds waits  process session holds waits
  TX-00070029-00749150        23     476     X             23     476           S
  session 476: DID 0001-0017-00000003     session 476: DID 0001-0017-00000003
  Rows waited on:
  Session 476: obj - rowid = 000376E2 - AAA3biAAEAAA4BwAAA
    (dictionary objn - 227042, file - 4, block - 229488, slot - 0)
  Information on the OTHER waiting sessions:
  End of information on OTHER waiting sessions.
  Current SQL statement for this session:
  INSERT INTO CHILD(ID_C, ID_P1, ID_P2, ID_P3) VALUES(1,1,1,1)
  ----- PL/SQL Call Stack -----
    object      line  object
    handle    number  name
  3989eef50         4  procedure SCOTT.INSERT_INTO_CHILD
  391f3d870         1  anonymous block
  .
  .
  .
  .
          SO: 397691978, type: 36, owner: 39686af98, flag: INIT/-/-/0x00
          DML LOCK: tab=227042 flg=11 chi=0
                    his[0]: mod=3 spn=35288
          (enqueue) TM-000376E2-00000000  DID: 0001-0017-00000003
          lv: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  res_flag: 0x6
          res: 0x398341fe8, mode: SX, lock_flag: 0x0
          own: 0x3980df420, sess: 0x3980df420, proc: 0x39859c660, prv: 0x398341ff8
          ----------------------------------------
          SO: 397691878, type: 36, owner: 39686af98, flag: INIT/-/-/0x00
          DML LOCK: tab=227040 flg=11 chi=0
                    his[0]: mod=2 spn=35288
          (enqueue) TM-000376E0-00000000  DID: 0001-0017-00000003
          lv: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  res_flag: 0x6
          res: 0x3983386e8, mode: SS, lock_flag: 0x0
          own: 0x3980df420, sess: 0x3980df420, proc: 0x39859c660, prv: 0x3983386f8
          ----------------------------------------
          SO: 397691778, type: 36, owner: 39686af98, flag: INIT/-/-/0x00
          DML LOCK: tab=227038 flg=11 chi=0
                    his[0]: mod=2 spn=35288
          (enqueue) TM-000376DE-00000000  DID: 0001-0017-00000003
          lv: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  res_flag: 0x6
          res: 0x398340f58, mode: SS, lock_flag: 0x0
          own: 0x3980df420, sess: 0x3980df420, proc: 0x39859c660, prv: 0x398340f68
          ----------------------------------------
          SO: 397691678, type: 36, owner: 39686af98, flag: INIT/-/-/0x00
          DML LOCK: tab=227036 flg=11 chi=0
                    his[0]: mod=2 spn=35288
          (enqueue) TM-000376DC-00000000  DID: 0001-0017-00000003
          lv: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  res_flag: 0x6
          res: 0x39833f358, mode: SS, lock_flag: 0x0
          own: 0x3980df420, sess: 0x3980df420, proc: 0x39859c660, prv: 0x39833f368
        ----------------------------------------

  Thanks in advance for your comments,
  Swear

  user633661 wrote:

  My question is: How can I determine which integration into the CHILD table waiting for? He could wait on a combination of these, PARENT_3, PARENT_2, PARENT_1, or even on the CHILD if I tried to insert a primary key that is duplicated in the CHILD. Since we have the full test case, we know that he was waiting on PARENT_3 (or better said, he expected to perform a commit / rollback of the transaction 'parent'), but is it possible to determine that only from the deadlock trace file?

  There is no way to get the answer from the deadlock trace.

  At this stage and with your example, the waiting session waits for a lock of the TX (transaction) - this means that he has no idea (and uninteresting) in the involved actual data, that it is simply waiting for a location of transaction undo segment header table clear.

  An easy way to demonstrate, it is as follows:-
  

  
  create the parent and child tables with the activated FK constraint
  Session 1 - set a save point, then insert line into parent but do not commit
  Session 2 - insert a load line in the child - the session will pass a waiting for TX lock on the parent transaction
  Session 1-restoration to the point of backup
  

  Because restoration is a save point, session 1 always held a TX lock in exclusive mode, even if it will take is more all lock TM (table).
  Session 2 will still wait for session 1 to commit or rollback - even if the parent required row does not exist, even in a State that is not validated.

  Concerning
  Jonathan Lewis
  http://jonathanlewis.WordPress.com
  Author: core Oracle

• While I'm trying to remove the MPEG-4 file, it says "make sure that the disk is not full or write protected and that the file is not currently in use.

  Original title: When I'm trying to delete file MPEG4, is not deletion. How can I delete file MPEG4?

  While I'm trying to remove the MPEG-4 file, it says "make sure that the disk is not full or write protected and that the file is not currently in use.

  Hello
   
  Method 1: Ownership of the file and then try to delete and see if that helps.
  Reference:
  How to capture a file or a folder in Windows XP
  http://support.Microsoft.com/kb/308421
  Method 2:
   
  Error message when you try to delete a file in Windows XP: "access denied".

  http://support.Microsoft.com/kb/298345

• Tried to delete the program, says file is damaged and can not remove.

  corrupted file.

  How can I delete a corrupted file. Tried to delete the program, says file is damaged and can not remove.

  Hello

  1. what kind of file is it?
  2 application/program related?

  If you know the location of the file, I recommend you start in safe mode and then remove the file and check. If you are able to delete the file, then start in normal mode and try to uninstall the program.
  Reference:
  A description of the options to start in Windows XP Mode
  http://support.Microsoft.com/kb/315222

  I hope this helps.

• Event Viewer error "there was an error while trying to read the local hosts file." file "hosts" but good

  Hello

  In Event Viewer, I see a lot of mistakes like:

  Source: The customers DNS events

  There was an error trying to read the local hosts file.

  I read that threat indicating to rename the hosts for "hosts" file

  http://answers.Microsoft.com/en-us/Windows/Forum/Windows_7-networking/system-log-shows-repeating-error-code-3221225485/3700e855-ded4-4F12-960f-1577f6132c04

  HOWEVER, the name of the file in my computer appears as it should

  C:/Windows/System32/drivers/etc / "hosts".

  and the content of the file is as it is supposed to be according to: http://support.microsoft.com/kb/972034

  What should I do to fix this error?

  P.S. I suspect my computer is compromised. Last weekend, Security Essentials has reported a malicious file backdoor and it has been deleted, but I have a weird behavior of the computer

  Thank you

  Veronica

  Try to re-create the hosts file.

  Open Notepad as administrator (click right on the Notepad icon or shortcut and click Run as admin) and type the following information in it:

  127.0.0.1 localhost

  : 1 localhost

  The '1' in the '127.0.0.1' must be in the first column of the line and there must be at least one space between "127.0.0.1" and "localhost". In the second line, there must be at least one space between ": 1" and "localhost".

  Save the file with name "hosts" in the C:\windows\system32\drivers\etc folder.

  Source: http://www.sevenforums.com/system-security/130518-hosts-file-missing-should-i-worry.html

  You seem to have a hard drive problem. Please provide a copy of your system information file. Type the system information in the search box above the Start button and press the ENTER key (alternative is select Start, all programs, accessories, System Tools, system information). Select file, Export and give the file a name noting where it is located. Not to place the cursor in the body of the report before exporting the file. The system creates a new information file system each time system information is available. You must allow a minute or two before the file is completely filled before exporting a copy. Please download to your OneDrive (formerly Sky Drive), share with everyone and post a link here. Normal mode preferred report. Please say if the report was obtained in safe mode.

• My apps to say that I am not connected to creative cloud, but I am. I tried to delete the opm.db file and connect again, no luck. Help?

  My apps to say that I am not connected to creative cloud, but I am. I tried to delete the opm.db file and connect again, no luck.

  I had no problem with this problem until today when I rebooted my laptop to install a driver for the tablet.

  Check your hosts file.

  help for that and other adobe.com sure common connection problems read, http://helpx.adobe.com/x-productkb/policy-pricing/activation-network-issues.html

• I converted a file for a friend from pdf to doctx; he receives this messgae when he tried to open the testament of file is not open, "invalid directory name.

  I converted a file for a friend from pdf to doctx; He received this message while trying to open the will of file is not open, "invalid directory name.

  Hi vasiliost69641524,

  This error is supposed to be linked with MS Word, please refer to this link directory name of the error invalid - Microsoft community.

  Kind regards

  Nicos

• is trace SQL - possible to appoint the output trace file?

  Hello
  
  I put DBMS_SYSTEM. SET_SQL_TRACE_IN_SESSION in my database. This is the version 10.2 running on Linux.
  Now, I want to display the trace file using tkprof. It is in my directory in $ORACLE_BASE/admin/SID/udump. But there are more tracks and they are all the same: instancename_ora_traceid, is very difficult to find the right one.
  Is it possible to make the sql trace file to be named by any other means?
  
  Thanks in advance.
  Sousou

  Hello

  Yes, you can change then what is the purpose of this
  ALTER session set tracefile_identifier = trace_file_name

  Add with the tracefile_identifier

  Select c.value | '\' || d.instance_name | "_ora_" | a.SPID | '.trc' trace_file_is_here
  v $ process a, v$ session b, v$ parameter c, v$ instance d
  where a.addr = b.paddr
  and b.audsid = userenv ('sessionid')
  and c.nom = 'user_dump_dest;

  -Pavan Kumar N

  Published by: pounet on December 9, 2008 22:23

• trying to match the background of the image sidebar

  I'm creating a professional portfolio.  I worked on this problem for days and nothing I try seems to work.  It's a little hard to explain so I'm posting a page in order to help this discussion.

  

  How can I get the background of my image to match the sidebar of my illustrator file?  Tried to select background, then paint of the same color.  But the colors do not match.  I have to make a transparent background somehow?

  Is your background image REALLY 50 %K or is it a generation of CMYK for trying to look like 50 %k?

  If you hover over the background in Photoshop which is read the Info Panel? Is there the CMY values in the info panel? This isn't a 50 %K then.

  If you want 50% K in Photoshop, you must add 50% to the K channel in Photoshop and not simply paint over 50 %k.

• set up the default trace file

  I would like to know how to configure the trace file by default so that I receive event log entries related to the trace of departure.  I know also what tracks are available and how to ensure that one does not work that I don't need.

  Hello

  I suggest you return the item mentioned below.

  default trace enabled Option

  http://msdn.Microsoft.com/en-us/library/ms175513.aspx

  If this does not help then, I suggest that you post your query in the MSND forums for assistance.

  http://social.msdn.Microsoft.com/forums/en/categories/

• To find the log/trace file containing the error ORA-00018

  We use the Oracle 10 g on Linux platform. Our application Java has generated the error below:

  An error occurred during the processing of the SQL statement... ORA-00018: exceeded maximum number of sessions

  java.sql.SQLException: ORA-00018: exceeded maximum number of sessions

  at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:113)

  S/n, said he can't see this error in the alert log file. I want to know if there is any place in the Oracle Server i.e. any file/trace log file that can contain this error.

  Elya wrote:

  We use the Oracle 10 g on Linux platform. Our application Java has generated the error below:

  An error occurred during the processing of the SQL statement... ORA-00018: exceeded maximum number of sessions

  java.sql.SQLException: ORA-00018: exceeded maximum number of sessions

  at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:113)

  S/n, said he can't see this error in the alert log file. I want to know if there is any place in the Oracle Server i.e. any file/trace log file that can contain this error.

  Oracle has two General classifications of errors; Errors database & application errors.

  Oracle logs in the database for the file alert_SID.log errors.

  Oracle will NOT connect to an error in application & permit enforcement measures considered appropriate (there included logging) for application errors.

  This application uses connection pooling.

  If not, why?

• Address of the instantiation of the cursor in the SQL trace files > = 11.2.0.2

  Oracle Doc ID 11677061.8 mentions in 11.2.0.2 10046 trace / SQL_TRACE displays the address of the instantiation after the # rather than the number of cursor.

  Can someone explain what a "address instantiation" is and how to use it to identify the sliders in the trace of the files in an improvement on number of cursor.

  I have a theory that it may be useful when dealing with accumulated from several trace files using trcsess trace data.

  For the most part, I'm just curious to see if I can improve my performance skills by exploiting this change.  I can't find a single reference in the article or the blog describing the change.

  An example of the largest number of cursor that I see these days.

  PARSING IN CURSOR #48003855878616 len=65 dep=0 uid=370 oct=6 lid=370 tim=1366907498174148 hv=1477430740 ad='209f99a028' sqlid='40hwrntc0zmfn'

  ANALYSIS #48003855878616:c = 0, e = 4842, p = 0, cr = 0, cu = 0, set = 0, r = 0, dep = 0, og = 1, plh = 0, tim = 1366907498174146

  
  

  Pre 11.2.0.2 what it would look like
  

  
  

  PARSING IN CURSOR #3 len=65 dep=0 uid=370 oct=6 lid=370 tim=1366907498174148 hv=1477430740 ad='209f99a028' sqlid='40hwrntc0zmfn'

  ANALYSIS # 3: c = 0, e = 4842, p = 0, cr = 0, cu = 0, = 0, r = 0, dep = 0, og = 1, plh = 0, tim = 1366907498174146

  
  

  
  

  Here's what I read on the subject in 2010:

  The problem is that with the restructured cursor caching in 11g a statement executed again would come by number of different cursor for each run. As the number of cursor and the sqltext did not since the last use of the slider, the sqltext was printed for each execution of a cursor. It's a significant problem for applications like Oracle E-Business, where is typical SQL statement it is many thousands of characters. In some cases, this has increased the size of the file trace of an order of magnitude, and I'm sure it could be even worse.

  The solution was to pass the handle of the cached cursor (which is probably the address) and display instead of the cursor number. This should mean that the text is printed only on the first analysis of the SQL statement and the size of the trace file goes back to something reasonable.

  I believe you can "join" these new id values cursor from a trace file in a column of address in v$ sql, but I have not checked myself.

  I do not think that the change was intended to give the advantage of trcsess you are suspect, but it could turn out to be useful for this.

• can I remove the cross trace files?

  Hello
  
  My oracle home is full, I deleted all the files under BDUMP trace.
  I want to delete the trace files in the folder $ORACLE_BASE/diag/prod/prod/incident, the files have for jan, Feb and March Date of the.
  is there an impact on the database if I delete this trace of incident?
  and what are the other newspapers that do I remove the $ORACLE_HOME?
  Kindly let me know...
  
  Thank you

  You can delete the *.trc and it will not harm without worries.
  You can delete *.aud and they will not affect your database
  You can alertlog_sid.log and database will recreate again.

  Osama

• The server trace file sharing

  Hi all
  
  Our production database is 10.2.0.3 with 2 RAC nodes in the window MS 2003 servers. I wonder what kind of information that Oracle captures in the trace of the shared server file (file name looks like instance_s001_3333.trc). When I open some of these files I still see a single query always there along with messages like:
  
  WAITING #8: nam = 'gc cr block 2 ways' ela = 1222 p1 = p2 65 = 49677 p3 = 1 obj #= tim 69689 = 4137263779
  WAITING #8: nam = 'gc cr block 2 ways' ela = 593 p1 = p2 65 = 50863 p3 = 1 obj #= tim 69689 = 4137265531
  WAITING #8: nam = 'gc cr block 2 ways' ela = 592 65 p1 = p2 = 50879 p3 = 1 obj #= tim 69689 = 4137266700
  
  If we need to grant this request to make it disappear in the shared server trace files? What are the conditions to trigger Oracle put this request in the trace file?
  
  Thank you very much in advance for your support!
  
  Shirley

  I did a quick test with 10.2.0.1 EE on Linux with default shared server configuration. I have run your trace statements, and I see:
  -1 small file trace with the identifier of the EMT in USER_DUMP_DEST
  -1 large track .trc file s000 in BACKGROUND_DUMP_DEST.

  And it looks like the outcome according to trcsess doc. http://download.Oracle.com/docs/CD/B19306_01/server.102/b14211/SQLTrace.htm#PFGRF01050

  >
  However, in a shared server configuration a user session is served by different processes from time to time. The trace on the user session is dispersed across the different stack belonging to different processes.
  >

  Most traced statements are in the trace file to the shared server because it's the shared server that runs most of the SQL statements.