Ok, I'll jump in here 'cause I may be able to simplify the issue.
Starting with Oracle 8, you can create a Primary Key that uses an existing
index. This makes the administration stuff easier. You can create your own
locally partitioned unique index (using regular CREATE INDEX syntax).
Once the index is created, you can create the PK (ALTER TABLE x ADD
CONSTRAINT y PRIMARY KEY (z);). The existing index will be used if Oracle
can use it.
This works with partitioned tables as long as the PK index is
equipartitioned with the base table.
Kevin
-----Original Message-----
Sent: Monday, May 14, 2001 10:17 AM
To: Multiple recipients of list ORACLE-L
Diana,
Can I build the initial local primary key index using the storage and
tablespace clause to place the index in the correct index tablespace
to begin with. This index is multiple gigs and my database is tight
on space right now. I'm not sure that I have enough room to put
the index in the data tablespace and then move it to the appropriate
index partition tablespaces?
Do you put each of your primary key index partitions in a separate
tablespace?
The last DBA put all of our indexes into three tablespaces
(small, medium, large) which doesn't work very well when you
go to get rid of a partition.
Thanks,
Cherie
Diana_Duncan@ttpa
rtners.com To: Multiple recipients of
list ORACLE-L <[EMAIL PROTECTED]>
Sent by: cc:
[EMAIL PROTECTED] Subject: Re: Can I
partition my primary key constraint index?
05/13/01 02:55 PM
Please respond to
ORACLE-L
Yes, Cherie, you can. When creating the primary key constraint, use the
"USING INDEX" clause to specify any storage parameters you want for the
automatically created primary key index. I always use the clause, because
I am a picky DBA and I want my indices in their own tablespace and with
their own storage parameters. Also, if you specify that the index is
LOCAL, the partitioning will follow the same algorithm as the table.
Unfortunately, if you do LOCAL, the index partitions will automatically be
placed in the same tablespace as the table, but you can "move" the
partitions if you wish.
HTH,
Diana Duncan
TITAN Technology Partners
One Copley Parkway, Ste 540
Morrisville, NC 27560
VM: 919.466.7337 x 316
F: 919.466.7427
E: [EMAIL PROTECTED]
Cherie_Machler
@gelco.com To: Multiple recipients of
list ORACLE-L <[EMAIL PROTECTED]>
Sent by: cc:
[EMAIL PROTECTED] Fax to:
om Subject: Can I partition my
primary key constraint index?
05/11/2001
04:51 PM
Please respond
to ORACLE-L
Oracle will automatically create an index for your primary
key constraint.
I have a lot of large partitioned tables in my data warehouse.
All of my primary key indexes are non-partitioned. I would
like them to be partitioned.
When I drop the constraint and re-enable it, can I specify
at that time that I want the index to be partitioned? Or do I
need to drop my index and rebuild it to be partitioned after
the fact?
Is there any problem with having partitioned primary key indexes?
Thanks,
Cherie
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