RE: PL/SQL text within TRIGGERs
- From: J.Velikanovs@xxxxxxxx
- To: oracle-l@xxxxxxxxxxxxx
- Date: Tue, 22 Jun 2004 13:04:11 +0300
Good discussion, indeed!
Thank you Justin for pointing me ;)
Summary:
>> Triggers have an entirely different history then stored procedures so
the
>> reasoning is probably legacy in nature. Prior to 7.3, they were not
stored
>> compiled - they were just stored as "text". I have a feeling that deep
down
>> they are still very much like an anonymous plsql block as they used to
be --
>> just stored compiled.
Any SQL within TRIGGER will be parsed (probably soft parsed) for each SQL
call. If we write SQL within procedure and call this procedure from the
trigger SQL can be cashed and parsing step will be skipped.
Thank you again,
It is right that I looking for,
Jurijs
9268222
============================================
http://otn.oracle.com/ocm/jvelikanovs.html
"Justin Cave" <justin@xxxxxxxxxxx>
Sent by: oracle-l-bounce@xxxxxxxxxxxxx
22.06.2004 12:47
Please respond to oracle-l
To: <oracle-l@xxxxxxxxxxxxx>
cc:
Subject: RE: PL/SQL text within TRIGGERs
This is generally still a good recommendation. Tom Kyte has a discussion
of
this here:
http://asktom.oracle.com/pls/ask/f?p=4950:8:::::F4950_P8_DISPLAYID:750770687
5149
The Cliff Notes version is that trigger code has to be (soft) parsed on
each
execution, so you'll get more scalability embedding the code in stored
procedures.
Justin Cave
Distributed Database Consulting, Inc.
http://www.ddbcinc.com/askDDBC
-----Original Message-----
From: oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@xxxxxxxxxxxxx]
On Behalf Of J.Velikanovs@xxxxxxxx
Sent: Tuesday, June 22, 2004 3:46 AM
To: oracle-l@xxxxxxxxxxxxx
Subject: PL/SQL text within TRIGGERs
Hi gurus!
At the beginning of my career ~5-6 years ago some one, told me that write
PL/SQL text within TRIGGER body is not good idea, because trigger text
compiling by Oracle at each trigger call. And it is better idea, to call
from trigger just procedure there we implement all the code. At the moment
I
don't remember who told me about this issue, I even don't know was it at
Oracle course or at other event time.
Is this recommendation is myth or it still true for Oracle environment.
Can anybody comment on it?
Thank you in advance,
Jurijs
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