Re: Do triggers cause a context switch between SQL & PL/SQL

Most of your cost there comes from the fact that the triggered approach turns an array process into a single row process. If you want a "fairer" comparison you need to ensure that your raw bulk load is only processing one row at a time.

Regards

Jonathan Lewis
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• Original Message ----- To: "Multiple recipients of list ORACLE-L" <ORACLE-L_at_fatcity.com> Sent: 01 April 2003 22:24

>
> I did some bulk load testing with triggers on v8.1.7.4 a few months
ago.
> All the trigger(s) had for code was a "NULL;" statement. The first
trigger
> increased the time 100% in the insert (ie: a load that took 1 minute
> increased to 2 minutes with the trigger). Each additional trigger
after
> the first cost an additional 25%.
>
> So I would read that as a 75% cost/increase to do the SQL to PLSQL
switch.
>
>

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