Request Forum inputs for Insert statements

Question

Hi All,
I have a scenario as mentioned below and need your inputs to improve performance
Package Sample
Procedure A
Insert into Table A();
End Procedure A
Procedure B
Insert into Table B();
End Procedure B
Procedure C
Insert into Table C();
End Procedure C
End Package Sample
I assume that when I execute the above package completely, then first Procedure A starts to insert a million records followed by Procedure B and then C in a sequence.
Is there any way through which while procedure A is executing, I need to parallely run the Procedure B and similarly Procedure C...
Please advice on best way to achieve performance in the above mentioned scenario.....Thanks

Answer 1

Harinath Arasu wrote:
I assume that when I execute the above package completely, then first Procedure A starts to insert a million records followed by Procedure B and then C in a sequence.Wrong assumption. You don't execute packages. Packages are just collections of procedures/functions etc. that you call individually as you need. A package can have it's own execution section (BEGIN .... ) just before the END of the package, and that will execute once only, the first time the package is accessed for any one session (or if the package is invalidated and recompiled).
Is there any way through which while procedure A is executing, I need to parallely run the Procedure B and similarly Procedure C...You need to use the DBMS_SCHEDULER package to schedule seperate jobs to run at the same time to call each of the procedures individually.
Please advice on best way to achieve performance in the above mentioned scenario.....ThanksIf it's a performance issue, it's likely not just about getting them to run at the same time, but about what it's actually doing. So first you need to identify the cause of the performance issue.
e.g. are your inserts all being doing in cursor loops? Or millions of insert statements? This is notoriously slow.
Also read the threads pointed to by the following post:
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