AWR and dba_feature_usage_statistics

Similar Questions

• Oracle AWR and ADDM report for a multiple instance Oracle database 11 g 2 (RAC)

  Hello

  How to create an Oracle AWR and ADDM report for a multiple instance (RAC) Oracle database 11 g 2?

  Concerning

  Hello

  Oracle DB 11 g 2 AWR Global report before 11 GR 2, the awrrpt.sql generation

  under $ORACLE_HOME/rdbms/admin only generates the report awr for the local instance.

  You will need to collect for each RAC instance awr report.

  11 GR 2, there are two new scripts awrgrpt.sql AND awrgdrpt.sql for CARS

  awrgrpt. SQL - AWR Global report (RAC) (global report)

  awrgdrpt. SQL - overall Diff AWR (RAC) report.

  Some other important scripts under $ORACLE_HOME/rdbms/admin

  spawrrac. SQL - Server Performance RAC report

  awrsqrpt. SQL - statement of the standard ANSI SQL92 report

  awrddrpt. SQL - period diff on the current instance

  awrrpti. SQL - workload repository Instance (RAC) report

  REF link:

  ADDM enhancements in Oracle Database 11 g & mdash; DatabaseJournal.com

• Review of details of AWR and ASH reports

  Hello...
  
  is there than a documentation on AWR and ASH reports so that the report is studied in detail...
  
  For an example
  
  IN the report of the ASH
  
  If you take Section TOP SQL with TOP events section...
  
  There are number of columns such as SQLID, Planhash, sampled # executions, % activity, event, high-ranking Source, TEXT SQL
  
  Here this column sampled number of executions a number of times where SQL has been executed... right...?
  and another high-ranking Source column wrote his ACCESS TABLE - FULL or any group by clause etc.
  
  In the example above, just like that I want to study in detail with each section of the AWR and ASH report
  
  See you soon...

  Hello

  I have a few articles abour AWR in my blog:

  http://Savvinov.com/2012/09/10/a-map-to-AWR-report/

  Maybe they can help you to a certain extent.

  However, you must understand is no detailed instructions on reading AWR, because:

  (1) AWR is just a collection of performance statistics, so read requires an understanding Oracle performance and how it is measured rather something specific to CWA

  (2) practical experience is most important theoretical knowledge of tham

  Best regards
  Nikolai

• AWR and report STATPACK

  Hello
  on the 11g R2,.
  1 are necessary the AWR and STATPACK reports?
  
  2 AWR isn't enough, we have all by itself?
  
  Thank you.

  1 are necessary the AWR and STATPACK reports?

  No, only AWR enough with the latest features

  2 AWR isn't enough, we have all by itself?

  Yes, however statspack is free, but the need with the AWR additional license.

• AWR and ADDM

  How can I know for sure that AWR and ADDM is enabled in our environment?
  
  I'm going to EM, Administration tab, link Automatic workload repository and I the number of snapshots . I was able to click on one of the IDS and 2 tabs are available to me - Details and report. When I click on the report, I see any kind of summary. In addition, I was able to click on the View ADDM executed on the upper right.
  
  Are these signs that AWR and ADDM is turned on? If so, how can I check OS_USER them walking, and when it was turned on. Snapshots dated back to last week. Is this a good idea? And how do I turn it works back?

  But I thought AWR and ADDM requires a special permit; extra cost package, isn't?

  Yes, and these not requiring license.

• Number of SQL Version in AWR and child cursor

  Hello
  In 11.1.0.7, which is Version SQL count in AWR report? What it means? and how oracle performs this version? How do we define child cursor?
  
  Thank you

  Hello

  Take a look at http://viveklsharma.wordpress.com/2009/09/12/ql/

  Concerning
  Anand

• AWR and RMAN report

  Hello
  in 10g R2 in my AWR report RMAN is the top:

  Top 5 Timed Events                                         Avg %Total
  ~~~~~~~~~~~~~~~~~~                                        wait   Call
  Event                                 Waits    Time (s)   (ms)   Time Wait Class
  ------------------------------ ------------ ----------- ------ ------ ----------
  RMAN backup & recovery I/O          152,712         624      4 ###### System I/O
  db file sequential read              28,410          25      1   56.4   User I/O
  control file sequential read         47,027          24      1   53.2 System I/O
  CPU time                                             21          47.2
  control file parallel write           2,103           7      4   16.7 System I/O
  
  
  Statistic Name                                       Time (s) % of DB Time
  ------------------------------------------ ------------------ ------------
  RMAN cpu time (backup/restore)                          350.5        790.9
  sql execute elapsed time                                 35.3         79.7
  DB CPU                                                   20.9         47.2
  inbound PL/SQL rpc elapsed time                          16.9         38.0
  PL/SQL execution elapsed time                             6.7         15.2

  Can we say that we should change some parameters for RMAN to be less consumer? What for example?
  
  Thank you.
  
  Published by: user522961 on Sep 24, 2010 03:04

  Hello
  You can try to reduce the channels and the degree of parallel...

  Is backup optimization on?

  and encryption...

  concerning

• Load data to the warehouse of the AWR problem

  Hello!

  I started to use warehouse AWR and especially database loaded successfully.

  But a few DB, there is problem, here is the output of 'Instant download now' job:

  SQL > SQL > SQL > BEGIN dbsnmp.mgmt_caw_extract.run_job_now; END;

  *

  ERROR on line 1:

  ORA-20137: NO NEWS EXTRACT SNAPSHOTS

  ORA-06512: at «DBSNMP.» MGMT_CAW_EXTRACT', line 528

  ORA-06512: at line 1

  Someone at - it experience with similar problems?

  Problem solved. things to check:

  -parameter job_queue_processes > 0, scheduller work MGMT_CAW_EXTRACT must run every 3 hours.

  -CAW_EXTRACT directory must exist and point to the directory in the directory agent 12 c.

  Dbsnmo.mgmt_caw_extract.run_extract of procedure can be executed manually first, after that this download job runs successfully.

• How to find the sql queries executed in one day with the sql and runtime text

  Hi Experts,

  Please tell me the sql query to find out the queries executed on a particular day and the runtime and the sql text of the query.

  Please reply urgent.

  Thanks in advance

  Database instance 'A' may have run 100 SQL queries today.  As for the instance of database 'B' could have exploited queries SQL 1 million today.  Instance of database 'B' to 'keep' the 1 million SQL statements - in memory or on disk do you expect?  Of course not.  There the age or flush or invalidate memory SQL statements.  He can't keep them on the disk (imagine running a completely different set of 1.2million SQL statements tomorrow and 1.3 the next day).

  AWR and StatsPack can make counts the number of "n" top of the page ("n" default to 30) SQL statements which are still present in the cache of the library (not years, rinsed, invalidated) when a snapshot was taken.  They can't declare "all" SQL statements.

  To return to your needs.  WHY do you need all the SQL statements?  Or are there only certain operations specific SQL would you be interested?  Could they have been treated by allowing audit (for example, UPDATE and DELETE with EXTENDED verification instructions)?

  Hemant K Collette

• Bug? : cannot execute predefined "last awr" report with the latest version of the SQL Developer

  Using sql developer before 4.x... report works fine

  Using SQL developer 4.0.0.13... report fails with ORA-01422

  using the actual query to generate awr against the same range of component snap works perfectly

  I opened a SR on the question

  Thank you

  It's always a good idea to open a SR when you are able.  I assume that you have already received a response from support.  For others I wondered about this, the question is likely related to running the report against a CCR environment, as indicated in the following bug:

  Bug 18132564 - LAST AWR REPORT FAILS WITH ORA-01422 IN CCR ENVIRONMENTS
  

  The call of the AWR report requires parameters for a DB and an ID of Instance, so that the report should run, as in earlier versions, for only the current instance, or be modified to run all instances in the cluster.

  Kind regards

  Gary

  SQL development team

  P.S.: And, in fact, a discussion prior forum - ai2 4.0-AWR and ASH giving ora-01427

  lead following bugs are connected and supposed to be fixed for SQL Developer 4.0...

  
  

  Bug 17481944 - PERFORMANCE PANELS NEED AWR/ASH/ADDM FOR RAC ENVIRONMENTS SUPPORT

  
  

  ... with the developer commenting

  I've added a number instance selection control to the various reports: ASH,.
  AWR, difference and SQL. The control is supposed to be visible when the
  connection is a RAC system, tests should a RAC.

  So if you are not on a RAC system, or are on CARS but do not see the selection number instance control, please let us know.

  Post edited by: Gary Graham

• AWR in memory

  Hello

  That I improve my certification of Oracle9i, Oracle10g. I'm currently studying AWR and its structure.  A book that I'm reading is saying, "the total size of the memory AWR area should not exceed more than 5 percent of the size of sharing pool"

  I know that there is a parameter that allows you to set the size of the sharing pool but I know not how set the area of memory AWR in the share pool or SGA. Y at - it a parameter to define the area of memory AWR?

  It would be great if someone answer me, please.

  Thank you.

  Asif

  As far as I know there is no direct parameter which determines the awr memory usage, can you shows us the link or book where it is written, because there are some hidden parameters allows to say in the historical case of the current session as _ash_Sample_all = true in order to see the amount of ash data is sampled and more stats interval rinse , buy the way you don't need all this worry that as that is managed internally, in 10G you just need to worry about automatic shared memory management...

• Section of the AWR report

  Hi all
  
  
  Please explain after section of the awr in details report
  Top 5 timed events in foreground
  
  Event waits Time (s) waiting (ms) % DB class average response time wait
  DB CPU 26 453 61.14
  DB file sequential read 5 066 221 1 6 084 14.06 user I/O
  ENQ: TX - line 71 1 542 21725 3.56 Application lock conflict
  db file scattered read 279 112 1 148 4 2.65 user IO
  Log file sync 394 955 1 109 3 2.56 commit
  Host CPU (processors: 2 hearts: 2: 2)
  
  Average load Begin load average end user % WIO %System% Idle
  0.05 0.37 7.0 4.1 3.7 88.9
  Instance of CPU
  
  % Total % CPU busy % DB time CPU waiting for CPU (Resource Manager)
  11.1 99.7 0.0
  Memory statistics
  
  Begin End
  Host Mem (MB): 12,281.8 12 281,8
  Use of LMS (MB): 2,048.0 2 048,0
  Use of PGA (Mo): 177.1 321,9
  Host % Mem used for SGA + PGA: 18,12 18.12

  Hi Arun,

  I don't think that this figure is very useful - is not to tell you what SQL (user or recursive, what happens the 22 percent of the time, etc.).

  So far, you seem to forward the wrong way. You are looking for in your CWA to find a problem. It's like a medical doctor looking at test results to see if a patient has a headache. You ask the patient on the headache and then you look in its test of possible clues as to what is the cause.

  Same thing with AWR. Ask your users what's troubling them. So look AWR and try to see explanations for it.

  Best regards
  Nikolai

• explain plan before and after?

  is there a way to know what sql plan was before and what plan using is right now?
  
  I know we can look to dba_hist_sql_plan but don't know how to put all the togeather...
  
  I'm on 10.2.0.3
  
  I have a sql this running slow at that time, I have the sql_id for it now... looks like God's throne
  slow and last week it was fine... you need to know what the plan of the explanation was last week?

  If you lincenced use the AWR and history tables, you can do

  SELECT * FROM TABLE (DBMS_XPLAN. DISPLAY_AWR ('& SQL_ID')); -to get the SQL execution plan, as he was executed in history

  For the current, you know how to get it

  SELECT * FROM TABLE (DBMS_XPLAN. DISPLAY_CURSOR ('& SQL_ID'));
  SELECT * FROM TABLE (DBMS_XPLAN. DISPLAY ('& SQL_ID'));

  You can also query dba_hist_sql_plan, and format the results.

• STATSPACK/AWR

  Hi all
  
  Anyone can answer my query below
  
  
  What is the recommended interval during which instant execution statspack or AWR and why?
  
  Thank you
  Concerning

  For statspack, simply use the Oracle condition spauto.sql and you'll get a glimpse of the once per hour.
  Make it longer, and you will not be able to discover the peaks of high activity.
  If you have performance problems, a useful interval is 15 minutes. Shorten and statspack activities will probably begin to strain database.

  ----------
  Sybrand Bakker
  Senior Oracle DBA

• process analasys AWR

  Hi s/n,.
  How to analyze the AWR reports, what are the important areas there is no limit here.
  
  Thank you
  Tmadugula

  AWR and Statspack are similar so this series should help: http://jonathanlewis.wordpress.com/statspack-examples/

  (at present two documents from Oracle at the top of the list have been moved (again!) but I'll try to find out where the next week.

  Concerning
  Jonathan Lewis