In the context of Oracle 11i applications, if the DR is not a good choice in 9i2 then should one consider application partitioning ? Thanks -----Original Message----- From: racdba-bounce@xxxxxxxxxxxxx [mailto:racdba-bounce@xxxxxxxxxxxxx] On Behalf Of Sudhi Sent: Tuesday, August 02, 2005 1:43 AM To: Hameed, Amir Cc: racdba@xxxxxxxxxxxxx; oracle-l@xxxxxxxxxxxxx Subject: Re: Dynamic re-mastering in RAC One of the reasons is they couldn't fit into the main release of the kernel. Also I would consider the 10g code base to actually implement dynamic re-mastering. Thanks, -Sudhi. Hameed, Amir wrote: > Thanks KG! > Interesting. I just checked in my 9.2.0.6 and 9.2.0.4 databases and > parameter _lm_dynamic_remastering is set to FALSE (the default is TRUE). > Since this is a hidden parameter and therefore is not meant to be set > without Oracle's permission, I wonder why Oracle 9i manuals talk about > Dynamic Remastering if it is not available out-of-the box in 9i2. Also, > is the reason that it is not available out-of-the-box is because the > algorithm in 9i2 is not that effective? > Any thoughts... > > Thanks > Amir > -----Original Message----- > From: racdba-bounce@xxxxxxxxxxxxx [mailto:racdba-bounce@xxxxxxxxxxxxx] > On Behalf Of K Gopalakrishnan > Sent: Monday, August 01, 2005 8:56 PM > To: racdba@xxxxxxxxxxxxx > Cc: oracle-l@xxxxxxxxxxxxx > Subject: Re: Dynamic re-mastering in RAC > > Amir: > > The right answer to your question is it depends. There is no dynamic > remastering in 9i RAC other than in 9204/9205 where the parameter > (only) _lm_dynamic_remastering is set to true. > > In 10gR1 dynamic remastering is set at file level and starting from R2 > the dynamic remastering is done at FILE+OBJECT Level. But conditions > are very stringent. For example one instance should touch the blocks > (of that object) 50 times more than the other instance in particular > period (say 10 mins). These touch ratio and time can be tuned by > _gc_affinity_limit and _gc_affinity_time parameters. > > Regards, > Gopal > > > On 8/2/05, Hameed, Amir <Amir.Hameed@xxxxxxxxx> wrote: > >> >>Folks, >>Is dynamic re-mastering done at the file-level or at the block level? > > That > >>is, does an instance master the entire datafile or only those blocks > > that > >>were repeatedly accessed from its buffer cache in a certain file? Is > > there a > >>way to identify/tell which file/block is mastered by a certain > > instance? > >>Thanks >>Amir > > > -- Legal Disclaimer: The statements expressed here are of my own and do not represent those of Yahoo Inc ! -- //www.freelists.org/webpage/oracle-l