Will DBMS_SQL.PARSE(DBMS_SQL.V7) suppress index in 9i partitioned table?

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09-28-2004, 12:06 PM
suhasd75

Will DBMS_SQL.PARSE(DBMS_SQL.V7) suppress index in 9i partitioned table?

Oracle Gurus,

I encountered a strange problem in my production environment today.

There is a procedure calling a certain SQL with an INDEX hint.
This SQL is called using DBMS_SQL (not native dynamic SQL, for whatever reason !!). However, Iam in no postition to contest the developers who have coded it right now.

My concern is:
The DBMS_SQL.PARSE uses various parameters, including language_flag.
We can pass 3 parameters viz., v6(0), native(1) and v7(2).
Oracle supplied PL/SQL packages documentation says =>

"Determines how Oracle handles the SQL statement. The following
options are recognized:
V6 (or 0) specifies version 6 behavior.
NATIVE (or 1) specifies normal behavior for the database to
which the program is connected.
V7 (or 2) specifies Oracle7 behavior."
What does this mean?

The SQL I am concerned with, runs on a partitioned table with corresponding partitioned index (global).

My question is: If I use the "v7" language_flag, will it suppress any INDEX hint that might exist in the SQL statement being run?

If somebody helps me out fast, I can save a potential production embarassment (and face !)

Thanks in advance...

Regards,
Suhas
09-28-2004, 02:03 PM
ddrozdov

As far as I know the v7 flag is the latest. It won't suppress any optimizations that 9i wants to do. You use native if you want your program to run also on oracle 6. If you want your program to run on oracle 7 and up then v7 is fine. I use native flag when I program because I don't know how it can ever be bad.
Developers continue using dbms_sql because NDS cannot do everything dbms_sql can. With dbms_sql you have more control and it is possible to write code that runs faster and uses less resources than NDS does. Of course it is possible that your developers do not feel comfortable with NDS yet.
d
09-29-2004, 04:23 AM
suhasd75

Thanks a million ddrozdov !!
I guess none of the other members are either interested in replying or do not know the solution...
But I have something to go on now....
Again, thanx very much, buddy.

Regards,
Suhas
09-29-2004, 10:11 AM
slimdave

Quote:

Originally posted by suhasd75
Thanks a million ddrozdov !!
I guess none of the other members are either interested in replying or do not know the solution...
But I have something to go on now....
Again, thanx very much, buddy.

Regards,
Suhas

I guess that a lot of people have just lost any interest in any of your problems you want to get solved for free.
09-29-2004, 11:26 AM
DaPi

Re: Will DBMS_SQL.PARSE(DBMS_SQL.V7) suppress index in 9i partitioned table?

Quote:

Originally posted by suhasd75
If somebody helps me out fast, I can save a potential production embarassment (and face !)

This is ensured by an arcane process known the the elite as "testing".