This may be true but if a uniform extent size policy (or very close to it) is adopted (or enforced with lmt's) then there is no need to coalesce anything at all - even if chunks of free space are contiguous.
hth connor --- Whittle Jerome Contr NCI <[EMAIL PROTECTED]> wrote: > The biggest problem with setting the PCTINCREASE to > 0 on existing tablespaces is that it won't > automatically coalesce. You may need to manually > coalesce occasionally especially if you deallocate > tables or rebuild indexes. Below is what I use to > see tablespaces needing coalescing: > > select a.tablespace_name, count(a.tablespace_name) > "ContinguousFreeBlocks" > from dba_free_space a, dba_free_space b > where a.tablespace_name = b.tablespace_name > and a.file_id = b.file_id > and a.block_id = b.block_id + b.Blocks > group by a.tablespace_name; > > If the number of ContinguousFreeBlocks gets above > 20, I coalesce. You may chose a different number > depending on the size of your tablespaces. > > Jerry Whittle > ACIFICS DBA > NCI Information Systems Inc. > [EMAIL PROTECTED] > 618-622-4145 > -- > Please see the official ORACLE-L FAQ: > http://www.orafaq.com > -- > Author: Whittle Jerome Contr NCI > 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). ===== Connor McDonald http://www.oracledba.co.uk (mirrored at http://www.oradba.freeserve.co.uk) "Some days you're the pigeon, some days you're the statue" __________________________________________________ Do You Yahoo!? Everything you'll ever need on one web page from News and Sport to Email and Music Charts http://uk.my.yahoo.com -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: =?iso-8859-1?q?Connor=20McDonald?= 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).
