Thanks Robert, and thanks once again, Gopal.
Now, metalink also has a formula for finding the number of transaction slots (DOC ID: 177926.999), and Steve Adams too explains precisely how he arrived at that number of 21 slots for a 2K block size at http://www.ixora.com.au/q+a/0008/29204045.htm without dumping the header block, from v$TYPE_SIZE. But then the metalink has one formula, if the rollback segment has a fixed number of extents, and another if it has unlimited number of extents. Steve Adams also does refer to the extent control headers, but I think he's done either of the one assumptions. Can someone take a look at both the articles, and confirm if its' really so. Thanks a Ton Raj "Freeman, Robert " To: Multiple recipients of list ORACLE-L <[EMAIL PROTECTED]> <Robert_Freema cc: [EMAIL PROTECTED]> Subject: RE: Number of Transaction Slots Sent by: [EMAIL PROTECTED] om March 07, 2002 03:23 PM Please respond to ORACLE-L To give credit where credit is due, this came from my friend K Gopalakrishnan... The transaction slots are visible as KTUXESLT in X$KTUXE. We can get the number of transaction slots in the rollback segments by select count(*) ktuxeslt from X$ktuxe group by ktuxeusn; The # of transaction slots are determined by the database block size. RF Robert G. Freeman - Oracle8i OCP Oracle DBA Technical Lead CSX Midtier Database Administration The Cigarette Smoking Man: Anyone who can appease a man's conscience can take his freedom away from him. -----Original Message----- Sent: Thursday, March 07, 2002 3:04 PM To: Multiple recipients of list ORACLE-L I believe someone else had asked this question before, but I did not see a reply. Does anyone know the number of transaction slots in the rollback segment header for block sizes of 4k, 8k, et all? >From what I have read, for a block size of 2K, its 21 transaction slots. (Steve Adams at www.ixora.com.au) For a block size of 8K, its 98 (Jonathan Lewis on Metalink - For 8.1.6) As per Metalink: 2K - 31 4K - 67 8K - 140 Different answers? What does it depend on? OS Version, Oracle Version, number of extents in rollback segment?? Regards Raj -- 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).
