In a very limited tests that I performed with ASSM (quite some time ago), I found that it tends to use a bit more space than non-ASSM. Something to keep in mind when FTS is used to access tables. Not sure if this changed in 9.2.0.2.x.
- Kirti -----Original Message----- Sent: Wednesday, February 19, 2003 10:24 AM To: Multiple recipients of list ORACLE-L Jay, I have been using ASSM for last five months in our Datawarehouse environment. Haven't had a chance to play with the OLTP side, yet. Inserts are way faster as compared to system managed extent allocation. I read Don's article on DBAZINE. However, I would like to add one caveat here: ASSM does not *eliminate* buffer busy waits as the article claims; it *reduces* them. BBW occur due to concurrent access to a buffer by more than one session. This will be the case regardless of number of freelists. While ASSM eliminates the freelist contention - thereby reducing BBW in inserts - it does not reduce the likelihood that more than one sessions will try to get the same block to the buffer cache simulataneously. Table drops appear a little slower in ASSM; but that could be wrong - I never timed dropping a table in the system managed mode. HTH. Arup Nanda ----- Original Message ----- To: "Multiple recipients of list ORACLE-L" <[EMAIL PROTECTED]> Sent: Wednesday, February 19, 2003 9:33 AM > I'm continuing to introduce myself to 9i. I've been reading about Automatic Segment Space Management, and I just wondered if anybody had any positive/negative experiences with it. I got some good info at: > > http://www.dbazine.com/burleson11.html > > > Thank you, > > > Jay Hostetter > Oracle DBA > D. & E. Communications > Ephrata, PA USA > -- Please see the official ORACLE-L FAQ: http://www.orafaq.net -- Author: Deshpande, Kirti 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).
