> 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: [EMAIL PROTECTED] > To: Multiple recipients of list ORACLE-L <[EMAIL PROTECTED]> > 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: [EMAIL PROTECTED] > > 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: [EMAIL PROTECTED] (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: [EMAIL PROTECTED] > > 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: [EMAIL PROTECTED] (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: [EMAIL PROTECTED] 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: [EMAIL PROTECTED] (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).
