Run/execute multiple procedures in Parallel - Oracle PL/SQL

Question

I have an Activity table which is getting all the table events of the system. Events like new orders, insertion/deletion on all the system tables will be inserted into this

Answer 1

You should try to use DBMS_PARALLEL_EXECUTE (since RDBMS 11).
https://blogs.oracle.com/warehousebuilder/entry/parallel_processing_in_plsql
https://oracle-base.com/articles/11g/dbms_parallel_execute_11gR2

Answer 2

Get a new DBA. Or even better, cut them out of any decision making processes. A DBA should not review your code and should not tell you to not create jobs, unless there is a good, specific reason.

Using DBMS_SCHEDULER to run things in parallel is by far the easiest and most common way to achieve this result. Of course it's going to consume more resources, that's what parallelism will inevitably do.

Another, poorer option, is to use parallel pipelined table functions. It's an advanced PL/SQL feature that can't be easily explained in a simple example. The best I can do is refer you to the manual.

Answer 3

It is impossible in general case without jobs, and it will make multiple sessions for this. There is no such thing as multithreading PL\SQL with a few exceptions. One of them is parallel execution of sql statements [1]. So there are some attempts to abuse this stuff for parallel execution of PL\SQL code, for example try to look here [2].

But as i've said it's abuse IMHO.

Reference:

1. https://docs.oracle.com/cd/B19306_01/server.102/b14223/usingpe.htm
2. http://www.williamrobertson.net/documents/parallel-plsql-launcher.html