Running groups of procedures in process flow

Question

I am having an impossible time trying to conceptualize a solution to the following problem:
I am trying to build a process flow in OWB 9.2.0.2.8 that executes a group of procedures before continuing with the rest of the workflow which executes further mappings.
I have a java stored procedure that must be executed daily to produce text files of securities prices to be loaded into a datawarehouse. The Oracle JVM does not run multi-threaded code in stored procedures, so to speed up the acquisition of the text files, I run 40 simultaneous OEM jobs against the stored procedure to produce a de facto 40-threaded process. This works well, but is not integrated into the workflow to load the text files into the database.
I would like to integrate the 40 OEM jobs into a process workflow: (1) Run all 40 procedures simultaneously to acquire the text files, (2) on success of all 40, execute the mapping to load the datawarehouse. This would be simple if the text file acquisition could be done in one procedure, but to iterate sequentially over all the securities takes too long - hence my effort to run jobs simultaneously by security groups.
Is it possible to build a process to run a group of procedures simulteously?
Perhaps I must move the datawarehouse loading process that follows the text file acquisition out of OWB by having the java stored procedure itself execute the load.

Answer 1

Many thank for the reply.
If I were to employ a fork to execute the java stored procedures in parallel, I do not understand how to set the next stage in the process, namely the mapping of an external table to the datawarehouse tables, to execute on the condition that ALL the forked processes have finished in success.
For example, page 10-24 of the users manual shows ftp, FDS, and Email activities executed in parallel after a mapping. I need the next activity after the FTP, FDS, and email to execute on success of FTP, FDS, and email as a group - like a join in the workflow. This is the issue.
Rather than use an external process to invoke the java stored procedure, I create a pl/sql procedure wrapper like :
PROCEDURE GET_STOCKPRICES AS
language java name 'prices.getthestockprices();'
to enable me to call the wrapper as a private procedure from OWB.
Currently this java stored procedure uses regular expressions to build 40 different text files of proper format to load into the warehouse. A separate job consolidates each text file into one file that is used as the external table to load the datawarehouse.