1. Data and Index segments have different storage and sizing requirements.
That's the main reason for them to be put up in different tablespaces.
2. If all indexes are in a seperate tablespace of their own, one could
avoid backing up this tablespace if time and space are a constraint.
3. The I/O should be evenly distributed across the disks and controllers.
It will not help you, if you create a new Index tablespace, and put it on a
disk, that is currently experiencing heavy I/O.
4. Having data and Index on seperate disks will benefit you, depending on
the data access patterns. Sequential access might benefit from it, but
would not make any difference to random access.
As always, I could stand corrected.
Raj
"Seema Singh"
<oracledbam@ho To: Multiple recipients of list ORACLE-L
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Sent by: Subject: INDEX move
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June 05, 2002
01:55 PM
Please respond
to ORACLE-L
Hi
I have few of primary key and unique indexes on main data tablespace.I am
thinking that if I moved those indexes into diffrent tablespace then we
woudl have some performance gain.If I am not correct let me know please?Is
any impact if I move primary key and unique indexes to INDEX tablespace?
Thx
-Seema
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