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It is not wise to dedicate disks for certain functions. The best and simplest thing to do is stripe over as many disks as you can .....
Point 2 is old and has never been true and can really hurt performance/throughput of your database
Also remember Databases is about disks/IOs not number of files ! (1 disk with 10 files or 1 file will perform as bad).
Waiting for replies ;-)
Anjo.
Andreas Stephan wrote:
> Hi Chuan,
>
> here are some rules I use when I install a database:
>
> 1) never put rollback segment tablespace on a drive containig data (table) or
> index tablespaces
> 2) never put data and index tablespaces on the same drive if they interact
> 3) use a max of 2Gig Datafiles to keep maintenance simpler and to avoid
> unnecessary recovery time
> (it is easier and quicker to recover one 2 Gig Datafile than one of 20 Gig).
> You can transport a
> 2 Gig Datafile on an old dat tape but with 20 Gigs?? And copying from tape
> to disk or over the lan
> will not cause any problems if you have only 2 Gig Datafiles.
> 4) try to use partitioned tablespaces if possible. Split the data onto the
> partitions. Each partition should
> reside on a separate drive to maximize performance
>
> putting datafile on different drives will only help if you have more than one
> tablespace and your objects are
> well separated onto these tablespaces (index objects in index tablespaces,
> tables in data tablespaces, tables that
> are often joined moved into separate tablespaces on separate disks or
> implemented using clusters etc..)
>
> hth
> Andy
>
> chuan zhang schrieb:
>
> > Hi, all,
> >
> > Could anyone tell me that which the following option is better in terms of
> > performance:
> >
> > 1) One tablespace with one big datafile, this datafile might increase more
> > if there are more storage.
> >
> > 2) One tablespace with many small or medium datafiles
> > or
> > 3) Splitting many datafiles into many tablespaces.
> >
> > Note, I have considered to put the datafiles into different drives in order
> > to increase the performance.
> >
> > Thanks
> >
> > Chuan Zhang
> >
> > Asiaonline Ltd Co.
Received on Thu Jun 08 2000 - 00:00:00 CDT