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RE: 10g Automatic Statistics Gathering

From: Powell, Mark D <mark.powell_at_eds.com>
Date: Wed, 6 Jul 2005 16:44:34 -0400
Message-ID: <5A14AF34CFF8AD44A44891F7C9FF41050395B99B@usahm236.amer.corp.eds.com>


Being that typical is the default I do not think you have to worry about an extra licensing fee for setting the statistics gathering level. Some of the products that use the statistics might be another story. But you can collect them for the cost of overhead.

HTH -- Mark D Powell --  

-----Original Message-----

From: oracle-l-bounce_at_freelists.org [mailto:oracle-l-bounce_at_freelists.org] On Behalf Of Vajrala, Madhusudana R. Sent: Wednesday, July 06, 2005 4:19 PM
To: oracle-l_at_freelists.org
Subject: RE: 10g Automatic Statistics Gathering

 Below are the differences W or W/O stats enabled on the 10g Database:

And I think when you set statistics_level to TYPICAL/ALL, there will be some extra license fee.

#_______________________________________________________
col statistics_name      for a30 head "Statistics Name"
col session_status       for a10 head "Session|Status"
col system_status        for a10 head "System|Status"
col activation_level     for a10 head "Activation|Level"
col session_settable     for a10 head "Session|Settable"

SELECT STATISTICS_NAME,
       SESSION_STATUS,
       SYSTEM_STATUS,
       ACTIVATION_LEVEL,
       SESSION_SETTABLE

  FROM v$statistics_level
 ORDER BY 1
/
#_______________________________________________________

W/ STATISTICS_LEVEL=TYPICAL ( $$$$ )

#_______________________________________________________________________

                               Session    System     Activation Session
Statistics Name                Status     Status     Level      Settable

------------------------------ ---------- ---------- ----------
----------
Active Session History ENABLED ENABLED TYPICAL NO Bind Data Capture ENABLED ENABLED TYPICAL NO Buffer Cache Advice ENABLED ENABLED TYPICAL NO Cache Stats Monitor ENABLED ENABLED TYPICAL NO Global Cache Statistics ENABLED ENABLED TYPICAL NO Longops Statistics ENABLED ENABLED TYPICAL NO MTTR Advice ENABLED ENABLED TYPICAL NO Modification Monitoring ENABLED ENABLED TYPICAL NO PGA Advice ENABLED ENABLED TYPICAL NO Plan Execution Statistics DISABLED DISABLED ALL YES Segment Level Statistics ENABLED ENABLED TYPICAL NO Shared Pool Advice ENABLED ENABLED TYPICAL NO Threshold-based Alerts ENABLED ENABLED TYPICAL NO Timed OS Statistics DISABLED DISABLED ALL YES Timed Statistics ENABLED ENABLED TYPICAL YES Ultrafast Latch Statistics ENABLED ENABLED TYPICAL NO
Undo Advisor, Alerts and Fast ENABLED ENABLED TYPICAL NO Ramp up

W/ STATISTICS_LEVEL=BASIC

#_______________________________________________________________________

Statistics Name                Status     Status     Level      Settable

------------------------------ ---------- ---------- ----------
----------
Active Session History DISABLED DISABLED TYPICAL NO Bind Data Capture DISABLED DISABLED TYPICAL NO Buffer Cache Advice DISABLED DISABLED TYPICAL NO Cache Stats Monitor DISABLED DISABLED TYPICAL NO Global Cache Statistics DISABLED DISABLED TYPICAL NO Longops Statistics DISABLED DISABLED TYPICAL NO MTTR Advice DISABLED DISABLED TYPICAL NO Modification Monitoring DISABLED DISABLED TYPICAL NO PGA Advice DISABLED DISABLED TYPICAL NO Plan Execution Statistics DISABLED DISABLED ALL YES Segment Level Statistics DISABLED DISABLED TYPICAL NO Shared Pool Advice DISABLED DISABLED TYPICAL NO Threshold-based Alerts DISABLED DISABLED TYPICAL NO Timed OS Statistics DISABLED DISABLED ALL YES Timed Statistics ENABLED ENABLED TYPICAL YES Ultrafast Latch Statistics DISABLED DISABLED TYPICAL NO
Undo Advisor, Alerts and Fast DISABLED DISABLED TYPICAL NO Ramp up

-----Original Message-----

From: oracle-l-bounce_at_freelists.org [mailto:oracle-l-bounce_at_freelists.org] On Behalf Of Barr, Stephen Sent: Tuesday, July 05, 2005 11:07 AM
To: Radoulov, Dimitre; Lex de Haan; Barr, Stephen; oracle-l_at_freelists.org Subject: RE: 10g Automatic Statistics Gathering

Thanks all! Much appreciated.

-----Original Message-----

From: Radoulov, Dimitre [mailto:cichomitiko_at_gmail.com] Sent: 05 July 2005 17:02
To: Lex de Haan; Stephen.Barr_at_BSkyB.com; oracle-l_at_freelists.org Subject: Re: 10g Automatic Statistics Gathering

Thanks Lex!
So in situations when you want to disable automatic statistics gathering, the most direct approach is to disable the GATHER_STATS_JOB as follows(Concepts Guide 10G r1):

BEGIN
  DBMS_SCHEDULER.DISABLE('GATHER_STATS_JOB'); END;
/

Setting the STATISTICS_LEVEL parameter to BASIC disables the collection of many of the important statistics required by Oracle Database features and functionality, including: Automatic Workload Repository (AWR) Snapshots Automatic Database Diagnostic Monitor (ADDM) All server-generated alerts Automatic SGA Memory Management Automatic optimizer statistics collection Object level statistics End to End Application Tracing (V$CLIENT_STATS) Database time distribution statistics (V$SESS_TIME_MODEL and V$SYS_TIME_MODEL)
Service level statistics
Buffer cache advisory
MTTR advisory
Shared pool sizing advisory
Segment level statistics
PGA Target advisory
Timed statistics
Monitoring of statistics

Note:
Oracle strongly recommends that you do not disable these important features and functionality.

Cheers
Dimitre Radoulov

ETNěTEAM



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http://www.freelists.org/webpage/oracle-l Received on Wed Jul 06 2005 - 15:47:11 CDT

Original text of this message

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