 | | | ORA-12838 please : Is possible to append two times to the same table befo | ORA-12838 please : Is possible to append two times to the same table befo 2004-04-02 - By Juan Cachito Reyes Pacheco
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Thanks Tanel and every one for answering.
Juan Carlos Reyes Pacheco
OCP
Database 9.2 Standard Edition
-- -- Original Message -- --
From: "Tanel Põder" <tanel.poder.003@(protected)>
To: <oracle-l@(protected)>
Sent: Friday, April 02, 2004 4:36 AM
Subject: Re: ORA-12838 (See http://ORA-12838.ora-code.com) please : Is possible to append two times to the same
table before doing a commit
Hi!
> I believe Oracle is enforcing this to guarantee consistency of the
> database. I realise you are probably using the APPEND hint for
performance
> reasons but is it really necessary?
Yes, when you're doing an insert in append mode, Oracle takes an exclusive
lock on the table and inserts rows above high-water-mark, without raising
the highwatermark itself. HWM is risen to appropriate position when you
commit, so when you rollback, the HWM is just left where it was before.
I don't see a reason why the same session shouldn't be able to do several
consecutive direct load inserts on a table, but I might have missed
something, or Oracle just hasn't implemented this improvement yet...
Tanel.
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