Chuan, You can crteate indexes on MVs if you want to - there is nothing against it; in fact it may be specifically desirable to do so. MVs are designed to help in query optimization by selecting against a "materialized" collection f data as opposed to selecting from a set of tables as in case of normal views and hence you can create as many indexes as you like to improve access plan.
The only downside I can think of, and it is pretty minimal, is increased time spent on index maintenance - be it in a fast refresh or complete one. But the cost is marginal compared to the benefit. HTH. Arup Nanda ----- Original Message ----- To: "Multiple recipients of list ORACLE-L" <[EMAIL PROTECTED]> Sent: Monday, October 27, 2003 10:29 PM > Hi, All > > Wondering whether anyone created indexes on materialized view to further > improve the performance? What's the pros and cons of this method? > > Thanks in advance. > > Chuan > Important: This transmission is intended only for the use of the addressee > and may contain confidential or legally privileged information. If you are > not the intended recipient, you are notified that any use or dissemination > of this communication is strictly prohibited. If you receive this > transmission in error please notify the author immediately by telephone and > delete all copies of this transmission together with any attachments. > -- > Please see the official ORACLE-L FAQ: http://www.orafaq.net > -- > Author: > INET: [EMAIL PROTECTED] > > Fat City Network Services -- 858-538-5051 http://www.fatcity.com > San Diego, California -- Mailing list and web hosting services > --------------------------------------------------------------------- > 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.net -- Author: Arup Nanda INET: [EMAIL PROTECTED] Fat City Network Services -- 858-538-5051 http://www.fatcity.com San Diego, California -- Mailing list and web hosting services --------------------------------------------------------------------- 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).
