Single Threaded MDB on Glassfish

Question

I have a number of MDBs running on Glassfish 3.1.2.2. Due to the nature of work on one of the MDBs I need to make it single threaded. I looked at the Tuning Guide, and while

Answer 1

That's easy to achieve via the glassfish-ejb-jar.xml deployment descriptor:

  
    
      YourMDB
      
        1
        1
        1
      
    
  

The above section will limit the number of processing beans to strictly 1, regardless of what the global poolsize says. That way you can easily finetune the system setup.