Turning Off Trace On Specific Deadlocks Events?
Jun 17, 2013
Can I disable tracing just on deadlocks events on 11gR2?One of our applications provoke several deadlocks. I've warned the developers team several times, but it's taking time to solve it. However, these deadlocks generate trace files of several sizes (from 300M to 3G ..)The Deadlock Graph on them are very useful but the PROCESS STATE section are too long, and until the developers team fix the problem they are just filling up my user dump dest. Can I disable them or disable the PROCESS STATE section from them?
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Aug 31, 2013
DB version: 11.2.0.3
I have enabled the below trace event before running query on my session.
ALTER SESSION SET events = '19027 trace name context forever, level 0x1000';ALTER SESSION SET tracefile_identifier = store_trace;
Then I ran my query, and upon the finishing of the query, I ran the below to disable trace.
ALTER SESSION SET events = '19027 trace name context off, level 0x1000';
Now I checked back on the trace folder in my Oracle DB directory structure, but cannot find any file created by using the above set tracefile_identifier. I had previously run the query with "sql_trace" ON with tracefile_identifier, and successfully got the tracefile generated by using the identifier.
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Feb 20, 2013
Would like to know the execution series of an application(From a particular screen) through Oracle trace events.
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Jun 24, 2013
We are using 11.2.0.3.0 on solaris 10 facing slow performance, following are the Wait Events in AWR report, Also if any specific document to analyze AWR report and to pin point the performance bottleneck.
Foreground Wait Events
**********************
Avg
%Time Total Wait wait Waits % DB
Event Waits -outs Time (s) (ms) /txn time
-------------------------- ------------ ----- ---------- ------- -------- ------
direct path read 308,729 0 21,191 69 58.0 39.5
db file sequential read 208,754 0 3,742 18 39.2 7.0
cursor: pin S 19,541,899 0 2,561 0 3,668.5 4.8
[code]....
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Sep 10, 2012
I need to trace all sessions created from specific user and specific machine . Got some code from internet and customised .
CREATE OR REPLACE TRIGGER SYS.enable_trace_trigger
AFTER LOGON ON DATABASE
DECLARE
[Code]....
I have yet not created it on db .
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May 29, 2012
I'd like to know if it is possible to track DML actions issued on a specific table by a specific user, for example , i tried :
AUDIT SELECT on SCOTT.DEPT by HR by ACCESS;
I get an error, where is my syntax error ?
i want to know if it's possible to do it without trigger ?
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May 1, 2013
We use apex and my professor wants us to import a table model into apex. everytime i try and import my table it says "your export file is not supported". i asked my professor what to do and he said "You should gen a ddl file from designer. Then use that to upload into apex and then run.
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Aug 5, 2010
I have read it in books that flashback uses undo data to create the flashback data or to flashback the database to a time in the past.Then, what is the role of archive files in flashback operation. Why it is mandatory to turn on archiving before turning on flashback. Also, if you remove the latest archive files, you can NOT flashback the data to a time in past (Oracle complains of missing archive files).
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Apr 11, 2011
I have a database which consists of various orders and various field.
I have a variable called createddatetime . I want that whenever i should run the database it should display records from
Yesterday 06:00:00 am to Current Date 05:59:59 am
Now to implement this i tried to put this syntax
and to_char(Createddatetime,'dd/mm/yyyy HH24:mi:ss') between 'sysdate-1 06:00:00' and 'sysdate 05:59:59'
But nothing comes up
where as definitely there are records between times because when i do and Createddatetime between sysdate-1 and sysdate I see valid records coming up.
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Sep 23, 2011
I created a new form for Oracle Apps, At first when I ran the form from the application all the fields backgrounds were black, so I changed the background in the property palette to white and foreground to black.
Now it shows fine but when I close this form and open another those fields are now blacked out. What should I do, I know the problem comes from the new form.
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May 4, 2011
i want to write, just ONE trigger that handles all DMS events at schema level and writes the field changes to a specific log table. i wanna to write like 'FOR EACH FIELD' as for each row (& also each table). it turns in the fields section and if the 'old' and 'new' values isnt same, it triggers this function & writes changes to log.
ex. is like:
FOR EACH ROW
FOR EACH FIELD
if (old.value != new.value)
insert into LOG(..., old.name,new.name) values (..., old.value, new.value)
NEXT // FIELD
NEXT // ROW
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Jul 5, 2012
I have a table with around half a million rows. I would like to determine how many sequential events occur per device per unique group of events. The requirement is that the events continue to occur within 1 second of each other, every second, with no gaps. For example, in the sample below there is a sequence of 2 events for device 2737, and another sequence of 5 events for device 2737. If there was a 1 second interval with no event (Signal_time) then that would be the end of one group of events, this is also shown below.
Using Oracle 11.2.0.2.0
DEVICE_ID SIGNAL_TIME
4401 17-JUN-12 12.59.59 PM
2332 02-MAY-12 12.59.59 PM
1086 30-MAY-12 12.59.58 PM
2737 17-JUN-12 12.59.58 PM -- start of one group / sequence of events
2737 17-JUN-12 12.59.58 PM -- end of one group / sequence of events
[Code]...
-- start of one group / sequence of events
2737 16-JUN-12 11.59.59 PM
2737 16-JUN-12 11.59.59 PM
2737 17-JUN-12 12.00.00 AM
2737 17-JUN-12 12.00.01 AM
-- end of one group / sequence of events
2737 17-JUN-12 12.00.03 AM
-- this is excluded from the above group of 5 events, but this may be the start of another group
Required output
Device--Count(*)--Start_Signal_Time-----------End_Signal_Time------------Duration (seconds)
2737----5-------------16-JUN-12 11.59.58 PM---17-JUN-12 12.00.01 AM--4
2737----2-------------17-JUN-12 12.59.58 PM---17-JUN-12 12.59.58 PM--1
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Aug 31, 2010
In my awr reports I have CPU time(in seconds) as one of top 5 timed events.Does that mean oracle is waiting for my cpu to execute the statements.But my cpu usage is 0-10% always
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May 9, 2011
I have a table with 2 defined FK constraints which fires delete cascade events.
I want to deny deletions when the event is fired from one of the tables and permit them when the event is fired from the other table.
Is it possible?
Is any way to solve which table fires the event?
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May 20, 2013
One fo my Db having reliable message as top first timed events.
Event Waits Time(s) Avg wait (ms) % DB time Wait Class
reliable message 685,139 24,625 36 29.58 Other
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Jun 2, 2010
I am trying to create a trigger to stop events from being deleted if the date is before the current date. This is the SQL syntax for my table
CREATE TABLE event
(event_id numeric(5) not null,
concert_id numeric(5) not null,
event_date date,
);
What I have attempted so far is:
CREATE OR REPLACE TRIGGER event_deleting
BEFORE DELETE ON event
FOR EACH ROW
BEGIN
IF DELETING THEN
[code]......
This gives me a few warnings, the first is that a DECLARE is missing and the second is a INTO is missing.
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Nov 6, 2012
registration forms for events (like Technology days and so on) with Apex? I want to build up something like that where customers can register for several events.
What is needed:
registration form with a limited registration (e. g. 80 customers) e. g. create a trigger?
show how many seats are still available
cancel of the registration
I´m using Apex 4.1
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Oct 15, 2013
I am using 11.2.0.3.0 version of oracle. As told by the DBAs that two days back the system realised high wait_class i.e 'Application' wait, and its a lot high than regular value as per our system and we need to dig it down, to avoid any future issue. now using below query , i found that the high wait time due to wait class 'Application' is actually belongs to particular event 'SQL*Net break/reset to client', and the sample time was '9 AM' morning.
select time,
round(max(case when event = 'SQL*Net break/reset to client' then time_waited_delta/1e3/decode(total_waits_delta,0,1,nvl(total_waits_delta,1)) end) ,2) SQL_break_reset_client,
round(max(case when event = 'Wait for Table Lock' then time_waited_delta/1e3/decode(total_waits_delta,0,1,nvl(total_waits_delta,1)) end),2) Wait_for_Table_Lock ,
round(max(case when event = 'enq: KO - fast object checkpoint' then
[code]....
Now i want to track it down further to the 'session/sql query/application' level resulting into such high value of wait time. so i queried, dba_hist_ active_ session_history, for the same sample duration (8.30 to 9 am) having event 'SQL*Net break/reset to client', and got two sessions(123,154) and their serial# , but there i got one sql_id(3ahgrey10ogh i.e a 'SELECT' query) specific to one session(123) but for other(125) no sqlid, and also SUM (wait_time + time_waited) is showing '0'.
Then i just removed the sampletime filter from the below query and observed that the same 'same session(123)+session serial#' was activated since 4 days back and was experiencing same waitevent 'SQL*Net break/reset to client', (it was having normal wait event 'db file sequential read' for sometime then after it went for this event ).
SELECT user_id,
PROGRAM,
machine,
session_id,
SESSION_SERIAL#,
sample_time-7/24,
session_state,
[code]....
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Mar 12, 2013
We have been using XLA to capture events on TimesTen for a while now without any issues. We were on TimesTen 7.0.5 and then moved to 11.2.2.3.0 and now 11.2.2.4.0. The XLA processes used Java 6 64 bit and works well with TimesTen versions 11.2.2.4.0 - 64 bit and 11.2.2.3.0 - 64 bit, without any issues.
However, we recently upgraded to Java 7 64 bit both during build time of our XLA processes as well during runtime. The problem we see now is that XLA process upon startup processes events for a while and then after that doesnt receive any events. The process doesn't throw any errors/exceptions. If we restart the XLA process, all the unprocessed events are received and then it behaves normally for a while after which it fails to receive any further events.
Is there any issue with Java 7 64 bit and the TimesTen XLA API? I read the TimesTen 11.2.2.4.0 manual and it says that Java 7 and the ttjdbc7.jar have been certified to work well. Was just wondering if there were any other issues.
In addition, to debug the problem, we ran XLA on a single node and on a two safe setup. The same observations are noted. On Java 6, the process runs just fine capturing all events without any issues, but with Java 7, the issues persist.
In addition, we are only performing updates/inserts on to TimesTen, no delete actions. The OS on which TimesTen's and XLA runs is Red Hat Enterprise Linux Server release 5.7 (Tikanga).
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Sep 13, 2013
11.2.0.3 EVENTS: Null(blank) or called a 'null event' See link. Checked the docs. I don't see anythingI think a null (blank) is for an idle wait since per the V$ACTIVE_SESSION_HISTORY spec these are not record. Am I correct?What is a 'null event'. I see a paper from Oracle magician dating to 9i that says this is an 'oracle goof'. Descriptions of Wait Events
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Oct 19, 2010
I have a partitioned table with degree for parallelism defined as 10.
I am getting maximum wait events on PX Deq: Execute Reply.For 2 hours trace the wait event is almost 1.5 hour.
I have done some seraching and i found this.
Quote:
In principle:A parallel query against a partitioned table will use one slave per partition if the query is thought to span multiple partitions, and it can use all slaves on a single partition if the query is thought to target just one partition. Unfortunately, this is NOT strictly true.
It is possible for the optimizer to decide to use parallelism at degree M when accessing N partitions. Sometimes this can lead to very inefficient, brute-force, processing when a more efficient path is available. This can be a particular problem with multi-table joins that should be partition-wise joins. You may be better off leaving the tables defined as non-parallel and adding explicit parallel hints to the code for critical queries.
So i have following questions
1) What is the meaning of PX Deq: Execute Reply.
2) Is this not recommended to use DEGREE clause in Partitioning.
3) Defining DEGREE clause in partioning of table will automatically executes DML on table PARALLELY same a PARALLEL hint clause
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Jun 29, 2011
I ran an AWR report. The database looks fine, but a data load that loaded 1 Million rows an hour is now doing 500K per hour.
Wait Class Waits %Time -outs Total Wait Time (s) Avg wait (ms) %DB time
DB CPU 224 80.70
Other 2,668 0 28 10 9.99
System I/O 4,753 0 9 2 3.23
Administrative 1 0 6 5543 2.00
Commit 357 0 4 11 1.46
[code]....
The network value for wait: 630,601. What does this mean? Anything I should look at? When it was 1million per hour, the value was 4,563,000.
Top 5 Timed Foreground Events
Event Waits Time(s) Avg wait (ms) % DB time Wait Class
DB CPU 224 80.70
unspecified wait event 2,666 28 10 9.99 Other
control file sequential read 4,753 9 2 3.23 System I/O
switch logfile command 1 6 5543 2.00 Administrative
log file sync 357 4 11 1.46 Commit
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Feb 8, 2012
I have to create the matrix report which shows calender. Looks Like this.
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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 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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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 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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