Compiler option RENT should be given for MPP and BMP programs to make the load module always loaded and ready for re-entrant. I am exploring more on this and give more updates.
I am using Changeman version control tool for compiling IMS-COBOL programs. While compiling the IMS programs, you have to set options 'Y' for CALLS & IMS. The options also varies depends which changman you are using.
If you are JCL compile process, you have to use IMS system libraries in the IEWL utility