Oracle FAQ | Your Portal to the Oracle Knowledge Grid |
![]() |
![]() |
Home -> Community -> Usenet -> c.d.o.server -> Licensing:: Partitioning tables in Oracle8
Talking of a bit of a tangent here, is the partitioning option an add-on
to Oracle8 Enterprise Edition. I am considering partiotioning to
increase availability
of data during reorgs etc. However, the Oracle rep. is saying it costs
$540 per concurrent
user on top of Oracle8 Enterprise Edition. Without the discounts the
cost per
concurrent user would be ($1800 + $540 = $2340).....a fancy price to pay
per concurrent user !!
Is my information correct ? or is partitioning option part of Oracle8 Enterprise Edition ??
Thanks
Raman Batra
Jonathan Lewis wrote:
>
> larionov_at_yahoo.com wrote in article
> <6kqfdt$93p$1_at_nnrp1.dejanews.com>...
> >
> >
> > So if there is no index on the table,
> > an insert would cause full table scan?
> > Otherwise how would Oracle know what partition should the new row
> go into?
> >
>
> The syntax for partition tables includes an upper bound on each
> partition:
> .... values less than (xxxxx)
> The upper bound of the previous partition is also the implicit lower
> bound
> of the current table.
>
> Oracle keeps these bounds in the dictionary cache, so that when a row
> has to be inserted it can check the row content against the list of
> bounds in the cache and select the correct table.
>
> > >
> > > Performance can be dramatically improved if your
> > > partition is correctly selected.
> > >
> >
> > I understand it is very beneficial for selects. How about
> > inserts, updates and deletes?
> > How many additional constraints are imposed on the table/partitions
> > and how would it slow down inserts and updates?
> >
>
> I don't have any strong figures on this against realistic data set
> yet.
> However, When I tried to do a direct load against I partition table
> in 8.0.3 it kept crashing the session.
>
> All the major jobs I have done with 8 to date have done inserts
> to explicitly named partitions because of my assumptions of the
> overhead on checking the constraints. Give me two weeks though,
> I am just starting a big performance test (heading for 2M rows per
> hour) on a 10-partition table.
Received on Sun May 31 1998 - 23:18:52 CDT
![]() |
![]() |