RE: Using procedures instead of coding update/insert

A small con for the PL/SQL procedures is that I have to rebuild the procedure for a table when the table structure changes(column added/dropped). Granted, I could probably build a more dynamic upd/del/ins procedure for each table, but then I am trying to keep the procedure code tight.

Also, I noticed that the current version does some basic checks before executing the INSERT/UPDATE/DELETE SQL. For example, it checks to see if the record exists before executing the INSERT sql.

-----Original Message-----
Sent: Tuesday, January 15, 2002 12:17 PM To: Multiple recipients of list ORACLE-L

So what is the basis for the case by case judgement. I'm not being flip - I really want to know.

>From the discussion so far it appears that the pros for PL/SQL procedures
are:

   Uniform access method to the database for all applications    Processing done on the more robust server machine    Less impact on the SGA
   Ease of maintenance
   "Loosely couples" the application to the database in that database    changes only impact the procedures, not the code

The pros for prepared statements is that you can do array binds (which give better performance).

Anything else? I'll be the first to admit that PL/SQL development is my short suit.  

                    "Gogala,

                    Mladen"              To:     Multiple recipients of list
ORACLE-L      
                    <MGogala             <ORACLE-L_at_fatcity.com>

                    @oxhp.com>           cc:

                    Sent by: root        Subject:     RE: Using procedures
instead of      
                                         coding update/insert

 

                    01/15/2002

                    11:40 AM

                    Please

                    respond to

                    ORACLE-L

 

 

The reason for that is the fact that with prepared statements you can do array binds while that isn't possible with the stored procedures. I don't like this kind of comparisons. I judge on case by case basis.

-----Original Message-----
Sent: Tuesday, January 15, 2002 10:55 AM To: Multiple recipients of list ORACLE-L

We have done some preliminary testing and found prepared statements about 20% faster than stored procedures. We inserted 200,000 records at a time (28-50 columns in a table ) using stored procedures and then used prepared statements for the same dataset. Both of them were called from java using JDBC thin drivers and interestingly found prepared statements faster. Similarly, deletes were also about 15%-20% faster using prepared statements.
For some reasons, updates to the same tables gave almost identical performance.

Rakesh

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