I'm not sure either as I am rereading a document by Craig Shallamaher where he is saying to change pctused and pctfree in order to reduce data block fragmentation. I have to test that.
At my new job, the DBAs are doing massive export/import to reduce fragmentation... (with their dictionnary managed tablespace) --- Jared Still <[EMAIL PROTECTED]> a écrit : > > Are you sure about that John? > > On Tuesday 24 September 2002 04:28, > [EMAIL PROTECTED] wrote: > > No, it is not retrospective. > > You are setting parameters to be used when the > next extent is created. > > A better example is when setting next extent size > to be different than the > > existing extent size (dictionary managed > tablespaces only). > > It does not alter all the existing extents it only > works on the next one > > that is created. > > > > HTH > > > > John > > > > -----Original Message----- > > Sent: 24 September 2002 10:58 > > To: Multiple recipients of list ORACLE-L > > > > > > > > Is the effect of modifying PCTFREE/PCTUSED > immediate ? > > > > > > If I do an "ALTER TABLE <tablename> PCTFREE 99 > PCTUSED1", > > does this take effect immediately, even for > existing blocks. > > [If so, existing blocks would not get new rows > inserted]. > > Or is it effective only in new Extents ? In that > case, > > existing blocks in existing Extents still use the > old > > PCTFREE/PCTUSED parameters and keep re-entering > the > > FreeList. > > > > Hemant K Chitale > > http://hkchital.tripod.com > -- > Please see the official ORACLE-L FAQ: > http://www.orafaq.com > -- > Author: Jared Still > 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). ===== Stéphane Paquette DBA Oracle, consultant entrepôt de données Oracle DBA, datawarehouse consultant [EMAIL PROTECTED] ___________________________________________________________ Do You Yahoo!? -- Une adresse @yahoo.fr gratuite et en français ! Yahoo! Mail : http://fr.mail.yahoo.com -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: =?iso-8859-1?q?paquette=20stephane?= 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).
