Trace Events (19027) Generated In Oracle
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 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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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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Oct 24, 2011
We have Oracle 10g(10.2.0.4) RAC on AIX 5.3, there are 3 RAC instances on each node.From Oct 9th, we found one of the instance in node 1 generated a large size trace files in udump. The largest size of the trace file take up 3G. But there's only about 15G $ORACLE_BASE direcotry. After some time, we should delete some trace files for releasing the space.
Here is a part of alert log when this issue happen:
Sun Oct 9 23:18:15 2011
Errors in file /oracle/app/oracle/admin/bzywk/udump/bzywk1_ora_3166258.trc:
ORA-00600: internal error code, arguments: [17087], [0x70000010DF9F580], [], [], [], [], [], []
Sun Oct 9 23:18:16 2011
Trace dumping is performing id=[cdmp_20111009231816]
[code]....
I checked with some trace files, I found all these files contains a huge info of processes.
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Nov 2, 2012
I have found there is a wearied of email generated from my database. I have the data base server located in US (estern time) and the sysdate in the database is AUSTRALIA (AEST). But i am working from India (IST).I have one procedure, which will send email to some recipients once the job is done. It is using UTL_SMTP for sending the email from database.
Now problem is, the email i got from this procedure has a different timestamp which is NOT matching to any of the times:
Time in Mail : 2-Nov-2012 9.56 PM
IST Time : 2-Nov-2012 10.56 AM
Easter Time : 2-Nov-2012 01.30 AM
AEST Time : 2-Nov-2012 4.30 PM
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Jul 24, 2013
I am trying the new Oracle 12c and its feature to create columns with the keyword IDENTITY. I create a table CREATE TABLE xt (a NUMBER GENERATED by default AS IDENTITY PRIMARY KEY, b VARCHAR2(10));
And populate it, sometimes specifying the value for a and sometimes relying on the system to generate the value:
INSERT INTO xt (b) values ('a');INSERT INTO xt (b, a) values ('b', default);INSERT INTO xt (b, a) values ('c', 3);INSERT INTO xt (b) values ('d');INSERT INTO xt (b) values ('e');
The problem is that the fourth INSERT fails because the system tries to use the value 3 which is already taken. The fifth statement gets the value 4.
And the table now contains: A B - -1 a 2 b 3 c 4 e Is there something I am missing? I understood that by specifying BY DEFAULT, I would be allowed to sometimes specify values on my own without them interfering with the generated values. I now that the same thing works correctly in MySQL (where I would get five rows from 1 to 5 with the same INSERT statements) /nikos
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Jan 27, 2013
I want to trace particular one user SQL activity in Oracle 10G database.
Note - Not only one session / Not for all Database activity
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Aug 7, 2012
Environment:
Oracle RDBMS 10g R2.
DB OS: HP Itanium
We use Oracle EBS R12.1.2 in our company and one of the analyst reported performance with saving the configuration in Pricing module. The common fix is to gather stats on BOM_EXPLOSIONS table. Recently, when the issue occurred I collected statistics on the table. The performance didnt improve. I went ahead and decided to trace the Oracle form session using the profile 'Initialization SQL Statement - Custom" at user level.
I also monitored the session in OEM 10g grid. The analyst performed the same set of steps and the performance was normal and acceptable. Analyst tried again and performance was matching with the expectation. I cleared the trace profile and analyst tried again. This time analyst had worse performance as the original issue. The issue got fixed later part of the day on its own. This has made me curious and thought to discuss it here.
I have had similar experience with 10g and 11g, when I enable the trace on the issue cannot be reproduced and when trace is off the issue pops back up.
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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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Jul 5, 2012
trying to do impdp but getting error
UDI-22303: operation generated ORACLE error 22303
ORA-22303: type "SYS"."DBMSOUTPUT_LINESARRAY" not found
ORA-00600: internal error code, arguments: [kokaocr], [], [], [], [], [], [], [], [], [], [], []
ORA-06508: PL/SQL: could not find program unit being called: "SYS.DBMS_OUTPUT"
ORA-06512: at line
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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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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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Jul 5, 2012
I was wondering with dba_constraints and i found unexpected result shown as below
select constraints_name, constraint_type from dba_constraints
constraint_name constraint_type
SYS_C00141 c
SYS_C00142 c
SYS_C00143 c
SYS_C00144 c
SYS_C00145 c
SYS_C00146 c
SYS_C00147 c
SYS_C00148 c
SYS_C00149 c
i jst want to know that what is this system generated constraints ?
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Dec 3, 2010
The trace directory is full of trc files with the text below:
--------Dumping Sorted Master Trigger List --------
Trigger Owner : INPUT
Trigger Name : CUS_TST
--------Dumping Trigger Sublists --------
There is like a file generated every minute, and i cant stop it from happening.I have tried setting the trace_enabled parameter to FALSE but no success.
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Oct 9, 2012
i just noticed on my 11g database - no AWR snapshots are generated.
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May 15, 2011
Forms 10g is insatalled recently on my machine. New form is developed,when we run the form it generates FMX file for the same but output is not dispalyed. The output window get closed automatically.
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Nov 5, 2010
in eache record we are receiving information from differente city, we pretend to get an output where we have a row for each city (delimited by comma) that we have in column CITY
Input data
SELECT '1001001' as CLIENT_ID, 'LONDON, PARIS' as CITY, TO_DATE('20101105', 'YYYYMMDD') as DT_REG FROM DUAL UNION
SELECT '1022201' as CLIENT_ID, 'MADRID, OSLO' as CITY, TO_DATE('20101105', 'YYYYMMDD') as DT_REG FROM DUAL UNION
SELECT '1033001' as CLIENT_ID, 'PARIS' as CITY, TO_DATE('20101105', 'YYYYMMDD') as DT_REG FROM DUAL UNION
SELECT '1033004' as CLIENT_ID, 'MADRID, OSLO, PARIS' as CITY, TO_DATE('20101105', 'YYYYMMDD') as DT_REG FROM DUAL
Output expected
CLIENT_IDDT_REGCITY
100100105/11/2010 LONDON
100100105/11/2010 PARIS
102220105/11/2010 MADRID
[code]...
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