performance when inserting into child tables
- From: <ryan.gaffuri@xxxxxxx>
- To: oracle-l@xxxxxxxxxxxxx
- Date: Wed, 21 Apr 2004 12:49:24 -0400
I have a child table with a formal foreign key relationship to its parent. I
have noticed that in alot of cases inserting into them is much slower than
inserting into the parent.
I didn't design the system, but all of these cases do not have the foreign key
indexed. I think that is the problem, but I'm not sure why. If it needs to scan
the parent table to see if a value exists it can do an index scan on the
primary key?
Anyone know more about this?
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