RE: Does analyze table lock the tables

John,

Yes, you may be right, My reply was in context of validate structure cascade......and not just analyze with compute ....I am reading a lot of material for 9i now a days and missed the original point....

Regards
Rafiq

Reply-To: ORACLE-L_at_fatcity.com
To: Multiple recipients of list ORACLE-L <ORACLE-L_at_fatcity.com> Date: Thu, 12 Sep 2002 16:43:27 -0800

> Prior to Oracle ver 9 , yes.It is an exclusive lock ...Oracle
> 9 has ONLINE
> option which allows DML while analyzing table...

Mohammed,

Have to differ with you on this - ANALYZE may place a DDL lock, but not a DML lock. This would have otherwise severely restricted concurrency. Should be easy enough to prove: Run two simultaneous sessions, one ANALYZING and one UPDATING a reasonably sized table on a test database.. Look at V$SESSION_EVENT for enqueues, and you will not see any.

It is true that there is an ONLINE sub-clause, but this is applicable _only_ for the VALIDATE STRUCTURE clause, and not for collection of object statistics that was referred by Rick.

John Kanagaraj
Oracle Applications DBA
Hitachi Data Systems
Santa Clara, CA
Phone: 408-970-7002 (W)
Fax: 408 327 3086 (Call/Email prior to fax)

> Reply-To: ORACLE-L_at_fatcity.com
> To: Multiple recipients of list ORACLE-L <ORACLE-L_at_fatcity.com>
> Date: Thu, 12 Sep 2002 06:33:29 -0800
>
> Hi DBAs,
>
> I would like to analyze a few tables in production. My
> question does it
> prevent any type of access i.e.,apply locks? If so I can wait
> to do it off
> hours.
>
>
> Thanks
> Rick
>
>
> --
> Please see the official ORACLE-L FAQ: http://www.orafaq.com
> --
> Author:
> INET: Rick_Cale_at_teamhealth.com
>
> Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051
> San Diego, California -- Public Internet access / Mailing Lists
> --------------------------------------------------------------------
> To REMOVE yourself from this mailing list, send an E-Mail message
> to: ListGuru_at_fatcity.com (note EXACT spelling of 'ListGuru') and in
> the message BODY, include a line containing: UNSUB ORACLE-L
> (or the name of mailing list you want to be removed from). You may
> also send the HELP command for other information (like subscribing).
>
>
>
>
> _________________________________________________________________
> MSN Photos is the easiest way to share and print your photos:
> http://photos.msn.com/support/worldwide.aspx
>
> --
> Please see the official ORACLE-L FAQ: http://www.orafaq.com
> --
> Author: Mohammad Rafiq
> INET: rafiq9857_at_hotmail.com
>
> Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051
> San Diego, California -- Public Internet access / Mailing Lists
> --------------------------------------------------------------------
> To REMOVE yourself from this mailing list, send an E-Mail message
> to: ListGuru_at_fatcity.com (note EXACT spelling of 'ListGuru') and in
> the message BODY, include a line containing: UNSUB ORACLE-L
> (or the name of mailing list you want to be removed from). You may
> also send the HELP command for other information (like subscribing).
>

--
Please see the official ORACLE-L FAQ: http://www.orafaq.com
--
Author: John Kanagaraj
   INET: john.kanagaraj_at_hds.com

Fat City Network Services    -- (858) 538-5051  FAX: (858) 538-5051
San Diego, California        -- Public Internet access / Mailing Lists
--------------------------------------------------------------------
To REMOVE yourself from this mailing list, send an E-Mail message
to: ListGuru_at_fatcity.com (note EXACT spelling of 'ListGuru') and in
the message BODY, include a line containing: UNSUB ORACLE-L
(or the name of mailing list you want to be removed from).  You may
also send the HELP command for other information (like subscribing).




_________________________________________________________________
Join the world’s largest e-mail service with MSN Hotmail. 
http://www.hotmail.com

-- 
Please see the official ORACLE-L FAQ: http://www.orafaq.com
-- 
Author: Mohammad Rafiq
  INET: rafiq9857_at_hotmail.com

Fat City Network Services    -- (858) 538-5051  FAX: (858) 538-5051
San Diego, California        -- Public Internet access / Mailing Lists
--------------------------------------------------------------------
To REMOVE yourself from this mailing list, send an E-Mail message
to: ListGuru_at_fatcity.com (note EXACT spelling of 'ListGuru') and in
the message BODY, include a line containing: UNSUB ORACLE-L
(or the name of mailing list you want to be removed from).  You may
also send the HELP command for other information (like subscribing).