Guang Yes, I noticed that after I posted my reply. Typically if this was a production system I would tend to create new rollback segments, online the new segments, offline the old segments, then change the init.ora. Sometime later I would drop the old segments and tablespace, maybe after a backup cycle has occurred. Now, you will say that is unnecessary, and technically you would be right. But one of the rules you learn by being a DBA for a long time is to never delete anything until you are absolutely certain you won't need it. Always have a rollback plan (no pun intended). It is also a good idea to back up the control file to trace anytime you make changes in database structure. With my method, if you have one of those "oh crap" moments, you can quickly recover. This may be overkill in this specific instance, but there are many other circumstances where you may end up being awfully glad you were a little cautious.
Dennis Williams DBA, 80%OCP, 100% DBA Lifetouch, Inc. [EMAIL PROTECTED] -----Original Message----- Sent: Wednesday, July 23, 2003 1:14 PM To: Multiple recipients of list ORACLE-L Do I need to? I thought after all the steps I still have the same rollback segment names (RBS01-06). The only difference is they will be in LMT now. Guang -----Original Message----- DENNIS WILLIAMS Sent: Wednesday, July 23, 2003 1:35 PM To: Multiple recipients of list ORACLE-L Guang - Don't forget to update your init.ora! Dennis Williams DBA, 80%OCP, 100% DBA Lifetouch, Inc. [EMAIL PROTECTED] -----Original Message----- Sent: Wednesday, July 23, 2003 12:24 PM To: Multiple recipients of list ORACLE-L Hi: I need to convert RBS tablespace (used for rollback segments) from DMT to LMT on a 24x7 production machine (Solaris 2.8, Oracle 8173). Here are the steps I am thinking of taking: 1. create a new rbslmt tablespace 2. create new rollback segments (RBSlmt01, RBSlmt02, ... RBSlmt 06) in rbslmt ts , set them online 3. alter all old rollback segments (RBS01, ... RBS06) offline; 4. Drop all old rollback segments; 5. alter old RBS tablespace offline 6. Drop old RBS tablespace 7. Remove old RBS tablespace's datafiles from OS 8. Create new RBS tablespace as LMT 9. Create new rollback segments (RBS01, ... RBS06) in RBS, set them online; 10. alter rollback segments (RBSlmt01, RBSlmt02, ... RBSlmt 06) offline, then drop them; 11. alter tablespace rbslmt offline 12. drop tablespace rbslmt 13. Remove tablespace rbslmt's datafiles from OS. Anything I am missing? TIA. Guang -- Please see the official ORACLE-L FAQ: http://www.orafaq.net -- Author: Guang Mei 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: DENNIS WILLIAMS 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: Guang Mei 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: DENNIS WILLIAMS 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).