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-----Original Message-----
From: Koivu, Lisa [mailto:[EMAIL PROTECTED]]
Sent: Tuesday, August 21, 2001 2:22 PM
To: Multiple recipients of list ORACLE-L
Subject: RE: Index question ???Andrea,
It is recommended, not required. Anytime the db needs to verify the fk constraint, if there isn't an index there to support it, a full table scan will happen. Performance killer.
What do you mean your indices disappeared? Can you elaborate?
-----Original Message-----
From: Andrea Oracle [SMTP:[EMAIL PROTECTED]]
Sent: Tuesday, August 21, 2001 14:06
To: Multiple recipients of list ORACLE-L
Subject: Index question ???Hi, all
I got couple of indices questions:
Is it REQUIRED or just recommended to build an index
on FK column/s?I used Alter Table ... Move and Alter Index ...
Rebulid to move the table into differenct block and
then rebuild index. Table Move works fine, but after
index rebuilt, some indices disappeared! How come?Thanks!
Andrea
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Author: Andrea Oracle
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