Re: Re: performance when inserting into child tables
- From: <ryan.gaffuri@xxxxxxx>
- To: oracle-l@xxxxxxxxxxxxx
- Date: Wed, 21 Apr 2004 15:26:40 -0400
I am the only person on the system. I'm doing a data load.
I did an insert select on the parent and in ran in 1.5 hours.
I am doing the same insert select to the child and it has run for 6.5 hours.
The foreign key is not indexed. I think it has to do with having to check the
parent for data integrity, but I do not know if a lack of index on the child
table matters. I have noticed this alot lately.
I have noticed that is worth when you have a cascade. Even if the insert is on
the child table. Not sure what else to look at.
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