Hi , Let me make a last try to make things clear

Process A , Process B and Process C are the 3 Process

Process A is a stand alone continuous running perl program which Reads from Linux named queues and process the Message . It picks up the message in the queue , and Makes a LWP call to a FCGI Process

This FCGI Process is Process B; FCGI is a persistent CGI process something like mod_perl, when the Process A makes this HTTP call to the FCGI process . This FCGI inturn again makes a HTTP Call gets back a HTTP 200 for it and Updates the Database ; and does a poll on the database tilll.....Basically we are making a Charging request to an asynchronous system

FCGI Process C that is running is invoked by the charging system after succesfull processing , this Updates the Database

Polling being done earlier ends here as the value is updated in the database; and the value is taken and written into a Linux named queue

Hopefully now I am little more clear ?