Re: Re: performance when inserting into child tables

From: <Jared.Still_at_radisys.com>
Date: Wed, 21 Apr 2004 13:23:52 -0700
Message-ID: <OF78A1BEA0.312A4E92-ON88256E7D.006FFA31-88256E7D.00700CC4@radisys.com>

I think Tim has already mentioned doing a 10046 level 8 trace on this job...

<ryan.gaffuri_at_cox.net>
Sent by: oracle-l-bounce_at_freelists.org
04/21/2004 12:26 PM
Please respond to oracle-l

        To:     oracle-l_at_freelists.org
        cc: 
        Subject:        Re: Re: performance when inserting into child tables

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.

Please see the official ORACLE-L FAQ: http://www.orafaq.com

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Received on Wed Apr 21 2004 - 15:26:44 CDT