CLIENT 에서 SQL TRACE 뜨기

제품 : ORACLE SERVER
작성날짜 : 2002-05-07
PURPOSE
Client에서 SQL trace를 뜨는 방법
EXPLANATION
오라클을 사용하는 tool 에서 sql trace 를 사용하고자 하면
alter session set sql_trace=true ; 를 사용한다.
또는 dbms_session.set_sql_trace (true) 사용한다.
이는 forms 를 비롯하여 precompiler 를 포함한다.
또 이의 반대는
alter session set sql_trace= false ; 를 사용한다.
또는 dbms_session.set_sql_trace (false) 사용한다.
이 때 실행된 결과는 user_dump_dest 에 쌓이는데 , file 이름은 process 번호를
참고한다.
그러나 MTS 의 경우 trace file 의 구분이 모호해지므로 client를 connect 시
dedicate 로 붙여 trace 를 사용하여야 하며, 만일 다른 session 에서 다른
session의 것을 trace 뜨고 싶으면,
dbms_system.set_sql_trace_in_session 을 사용할 수 있다.
EXAMPLE
이의 사용법은 다음과 같다.
1. Setup
catproc.sql 에서 생성되는 package 와는 달리 dbms_system 의
public synonym 은 생성되지 않고 권한도 부여되지 않는다.
DB 생성 초기에 SYS user 만 reference 할 수 있으므로 이 package 를
사용할 user에게 권한을 부여한다.
예제 : GRANT EXECUTE ON DBMS_SYSTEM to username;
2. v$session 으로부터 SID 와 serial 번호를 부여한다.
SQL> select sid, serial#, osuser, username
2> from v$session;
SID SERIAL# OSUSER USERNAME
7 66 <osLogin> <oracleUserName>
3. 원하는 session 에서 SQL trace 를 setting 한다.
exec sys.dbms_system.set_sql_trace_in_session
(12,16631,TRUE);
또는 pl/sql procedure 에서:
begin
sys.dbms_session.set_sql_trace ((<sid>,<serial>,TRUE);
end
4. session 에서 SQL Trace 를 끝마친다. 이 결과는 user_dump_dest에
쌓인다.
exec sys.dbms_system.set_sql_trace_in_session
(<sid>,<serial>,FALSE);
또는 pl/sql procedure 에서
begin
sys.dbms_session.set_sql_trace (<sid>,<serial>,FALSE);
end
만일 os user 가 khpark 인 client 에서 실행하는 sql 의 trace 를 뜨고
싶으면
svrmgrl> select sid,serial#,osuser from v$session
where osuser='KHPARK';
sid serial# osuser
=================================================
8 12 khpark
svrmgr>execute dbms_system.set_sql_trace_in_session (8,12,TRUE);
이렇게 하면 udump 에 trace file 이 생기므로 이를 이용하여 tkprof 를 수행한다.
REFERENCE DOCUMENT
---------------------

Hello Carl,
SQL Trace and SQL Profiler are deprecated since SQL Server 2012 which means that at any future version it might not be available anymore. Have you considered using Extended Events - Microsoft.SqlServer.Management.XEvent
Namespace?
Ivan Donev MCT and MCSE Data Platform
I've spent a fair bit of time reading about XEvents - eventually I won't need SQL 2008 support anymore and I can stop using Trace - but I'm not seeing anything remotely close to TraceServer.  What I see is an elaborate infrastructure for efficiently
collecting information about high volume OLTP workloads with minimal server impact.  That's all well and good, but of no use to me at all.  What I'm looking for is real-time information about OLAP database processing that I can embed in my app to
provide detailed metrics on same.  
Presumably something can be put together using XEvents as the source and ETW as the target, with real-time monitoring of ETW events, but that's a lot of API to get a handle on, and I haven't seen any helpful samples that show putting it all together to get
a profiler-like experience with live viewing of processing events as they happen.
Any pointers to helpful samples/resources on XEvents are appreciated - long term, that's going to be my path, I'm sure.
-cd Mark the best replies as answers!

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    The trace list has many lines that are not related to the SELECT statement in the ABAP program. This is because the execution of any ABAP program requires additional administrative SQL calls. To restrict the list output, use the filter introducing the trace list.
    The trace list contains different SQL statements simultaneously related to the one SELECT statement in the ABAP program. This is because the R/3 Database Interface - a sophisticated component of the R/3 Application Server - maps every Open SQL statement to one or a series of physical database calls and brings it to execution. This mapping, crucial to R/3s performance, depends on the particular call and database system. For example, the SELECT-ENDSELECT loop on the SPFLI table in our test program is mapped to a sequence PREPARE-OPEN-FETCH of physical calls in an Oracle environment.
    The WHERE clause in the trace list's SQL statement is different from the WHERE clause in the ABAP statement. This is because in an R/3 system, a client is a self-contained unit with separate master records and its own set of table data (in commercial, organizational, and technical terms). With ABAP, every Open SQL statement automatically executes within the correct client environment. For this reason, a condition with the actual client code is added to every WHERE clause if a client field is a component of the searched table.
    To see a statement's execution plan, just position the cursor on the PREPARE statement and choose Explain SQL. A detailed explanation of the execution plan depends on the database system in use.
    Performance Tuning is useful mainly reducing load on database. It is very important aspect while writing the programs/FM etc.....
    SQL Trace
    Use
    The SQL Trace function is an on-demand log of selected SQL statements that are issued against the database through the Open SQL Engine. The SQL Trace can be switched on or off dynamically. The log format is database independent. Besides the SQL statement text, each log record contains information about the point in time when the statement was executed, its duration, its input parameters and results (where applicable) as well as context information.
    Features
    The SQL Trace is especially useful for:
    Development:
    SQL Trace can help JDO, enterprise beans, servlet and JSP developers to learn which kind of database accesses their code produces.
    &#61489;&#61486; Performance analysis
    Typically, performance issues are caused by inefficient database accesses. In this case SQL Trace can be used to show the issued SQL statements and their duration, thus helping to identify inefficient SQL statements.
    Functions
    <b>The following functions are available on the initial screen</b>:
    Select trace:
    • Select the trace mode SQL Trace, Enqueue Trace, RFC Trace, or Table Buffer Trace. You can select mutliple trace modes simultaneously.
    Select trace function:
    • Start the trace recording.
    • Stop the trace recording.
    • Branch to trace list, detailed list, or time-sorted list.
    • Branch to Explain SQL to analyze an SQL statement without an explicit trace file.
    Trace files are managed by the system. Thus they can be saved, like any other object;
    saved trace files can be displayed and deleted.
    Trace Status
    A trace can only be activated once on any application server. The Trace Status display informs you whether another user in the system has already activated a particular trace.
    Starting the Trace
    Prerequisites
    <b>You can only switch on the Performance Trace for a single instance</b>. You should already have decided the scope and targets of your performance analysis.
    Procedure
    <b>To analyze a trace file, do the following</b>:
    ... 1. Choose the menu path Test &#61614; Performance Trace in the ABAP Workbench.
    The initial screen of the test tool appears. In the lower part of the screen, the status of the Performance Trace is displayed. This provides you with information as to whether any of the Performance Traces are switched on and the users for which they are enabled. It also tells you which user has switched the trace on.
    2. Using the selection buttons provided, set which trace functions you wish to have switched on (SWL trace, enqueue trace, RFC trace, table buffer trace).
    3. If you want to switch on the trace under your user name, choose Trace on.
    If you want to pass on values for one or several filter criteria, choose Trace with Filter.
    Typical filter criteria are: the name of the user, transaction name, process name, and program name.
    4. Now run the program to be analyzed.
    You will normally analyze the performance trace file immediately. In this case, it is a good idea to use a separate session to start, stop, and analyze the Performance Trace
    If you are shown trace kernel errors on the initial screen (for example, not enough storage space available), you must first remove the errors or have them removed by your system administrator.
    The selected trace types can be changed as required during a performance trace interval (time between switching on and off the trace). The user (user group) must remain unchanged.
    Result
    The results of the trace recording are written to a trace file. If trace records are overwritten during the trace interval, the system displays a message to inform you when you analyze the trace file.
    The results of the trace recording are stored to ten trace files. Overwriting trace records, however, cannot be entirely excluded in this case either.
    The Performance Trace records all database access calls, table buffer calls, remote calls, or calls for user lock activity. These measurements can affect the performance of the application server where the trace is running. To preserve system performance, you should therefore turn off the trace as soon as you finish recording your application.
    Stopping the Trace
    Prerequisites
    You have started the trace and finished running the program that you want to analyze.
    <b>For performance reasons, you should switch off the traces as soon as you have finished recording.</b>
    Procedure
    <b>To deactivate the trace:</b>
    ... 1. Choose Test &#61614;Performance Trace in the ABAP Workbench.
    The initial screen of the test tool appears. It contains a status line displaying the traces that are active, the users for whom they are active, and the user who activated them.
    2. Select the trace functions that you want to switch off.
    3. Choose Deactivate Trace.
    If you started the trace yourself, you can now switch it off immediately. If the performance trace was started by a different user, a confirmation prompt appears before deactivation-
    Result
    The results of the trace are stored in one or more trace files. You can then analyze the performance data stored in the trace file. See also, Analyzing Performance Data.
    Look at the below link
    http://www.sapbrainsonline.com/TOOLS/SQLTRACE/SQL_TRACE.html
    <b>Reward with points if helpful.</b>
    Regards,
    Vijay

  • Diff b/w Run time Analyizer(se30),Sql Trace (st05) and Performance Analyzie

    Can any one tell me the Diff b/w Run time Analyizer(se30),Sql Trace (st05) and Performance Analyzie(al21) ?

    Hi
    these all are doing t he same thing that is checking the program for better performance
    Tools for Performance Analysis
    Run time analysis transaction SE30
    SQL Trace transaction ST05
    Extended Program Check (SLIN)
    Code Inspector ( SCI)
    Run time analysis transaction SE30 :This transaction gives all the analysis of an ABAP program with respect to the database and the non-database processing. 
    SQL Trace transaction ST05: The trace list has many lines that are not related to the SELECT statement in the ABAP program. This is because the execution of any ABAP program requires additional administrative SQL calls. To restrict the list output, use the filter introducing the trace list.
    The trace list contains different SQL statements simultaneously related to the one SELECT statement in the ABAP program. This is because the R/3 Database Interface - a sophisticated component of the R/3 Application Server - maps every Open SQL statement to one or a series of physical database calls and brings it to execution. This mapping, crucial to R/3s performance, depends on the particular call and database system. For example, the SELECT-ENDSELECT loop on a particular database table of the ABAP program would be mapped to a sequence PREPARE-OPEN-FETCH of physical calls in an Oracle environment.
    The WHERE clause in the trace list's SQL statement is different from the WHERE clause in the ABAP statement. This is because in an R/3 system, a client is a self-contained unit with separate master records and its own set of table data (in commercial, organizational, and technical terms). With ABAP, every Open SQL statement automatically executes within the correct client environment. For this reason, a condition with the actual client code is added to every WHERE clause if a client field is a component of the searched table.
    To see a statement's execution plan, just position the cursor on the PREPARE statement and choose Explain SQL. A detailed explanation of the execution plan depends on the database system in use.
    Extended Program Check
    This can be called in through transaction SE38 or through transaction SLIN. This indicates possible problems that may cause performance problems.
    Code Inspector (SCI)
    You can call the Code Inspector from the ABAP Editor (SE38), the Function Builder (SE37), the Class Builder (SE24), or as a separate transaction (SCI).
    The Code Inspector indicates possible problems. However, note that, especially with performance issues: There is no rule without exception. If a program passes an inspection, it does not necessarily mean that this program will have no performance problems.
    reward if usefull

  • SQL Trace(ST05) and Run Time Analysys(SE30)

    Hi ABAP Experts,
    Can any one explain what is the use of
    1) ST05 and
    2) SE30
    ponits will be given for clear cut explanation
    Thanks and Regards
    Vijaya

    Hi,
    The SQL Trace part of the Performance Trace tool allows you to see how the OPEN SQL statements that you use in ABAP programs are converted to standard SQL statements (see Embedded SQL) and the parameters with which the embedded SQL statements are passed to the database system.
    Overview
    From the time you turn on the trace function to the time you turn it off again, all database activity occurring either for a specific user or for an entire system is recorded. The SAP System takes OPEN SQL statements and converts them in to embedded SQL statements that it passes to the database and makes the results available. The embedded SQL statement and its parameters are recorded in the SQL Trace file. The results of the SQL statement, like return code, number of entries retrieved, inserted, or deleted by the database are recorded in the SQL Trace file as well. The log file also contains the runtime of the statement and the place in the application program, respectively transaction, from which it was called which enables additional analyses (supported by the SQL Trace function).
    From the recorded SQL trace you can deduce:
    ·        which SQL statements your application carries out
    ·        which values the system uses for specific database accesses and changes
    ·        how the system translates ABAP OPEN SQL commands (such as SELECT) into standard SQL commands
    ·        where your application positions COMMIT statements
    ·        where your application makes repeated database accesses
    ·        what database accesses or changes occur in the update section of your application
    Create a Trace (SQL Server Profiler)
    To create a trace
    On the File menu, click New Trace, and connect to an instance of SQL Server.
    The Trace Properties dialog box appears.
    Note: 
    The Trace Properties dialog box fails to appear, and the trace begins instead, if Start tracing immediately after making connection is selected. To turn off this setting, on the Tools menu, click Options, and clear the Start tracing immediately after making connection check box.
    In the Trace name box, type a name for the trace.
    In the Use the template list, select a trace template on which to base the trace, or select Blank if you do not want to use a template.
    To save the trace results, do one of the following:
    Click Save to file to capture the trace to a file. Specify a value for Set maximum file size. The default value is 5 megabytes (MB).
    Optionally, select Enable file rollover to automatically create new files when the maximum file size is reached. You can also optionally select Server processes trace data, which causes the service that is running the trace to process trace data instead of the client application. When the server processes trace data, no events are skipped even under stress conditions, but server performance may be affected.
    Click Save to table to capture the trace to a database table.
    Optionally, click Set maximum rows, and specify a value.
    Caution: 
    When you do not save the trace results to a file or table, you can view the trace while SQL Server Profiler is open. However, you lose the trace results after you stop the trace and close SQL Server Profiler. To avoid losing the trace results in this way, click Save on the File menu to save the results before you close SQL Server Profiler.
    Optionally, select the Enable trace stop time check box, and specify a stop date and time.
    To add or remove events, data columns or filters, click the Events Selection tab. For more information, see: How to: Specify Events and Data Columns for a Trace File (SQL Server Profiler)
    Click Run to start the trace.
    Runtime analysis:
    se30 is the tcode for run time analysis, is a tool it
    display report based on lps for abap pragram execution
    time , data base load, system load. these are all will
    display in micro seconds.this tool will use for Transaction
    code, function modules , abap progrmes
    In Transaction SE30, fill in the transaction name or the program name which needs to be analyzed for performance tuning.
    For our case, let this be “ZABAP_PERF_TUNING”
    After giving the required inputs to the program, execute it. After the final output list has been displayed, PRESS the “BACK” button.
    On the original SE30 screen, now click on “ANALYZE” button.
    The percentage across each of the areas ABAP/ Database/System shows the percentage of total time used for those areas and load on these areas while running the program . The lesser the database load faster the program runs.
    SQL trace:
    /people/siegfried.boes/blog/2007/09/05/the-sql-trace-st05-150-quick-and-easy
    SE30
    /people/siegfried.boes/blog/2007/11/13/the-abap-runtime-trace-se30--quick-and-easy
    regards,
    vasavi.
    kindly reward if helpful.

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