IMS Tools

Together with Fast Path DEDB databases, the HDAM/PHDAM database types need to be monitored and tuned most often. 

Beside some general dataset attributes (like CISZ/blocksize or Access Method), these (P)HDAM specific DBD parameters are most important for performance:

• Randomizer Exit
• Number of Root Anchor Points per block
• Root Addressable Area (RAA) size
• Number of bytes per database record to be inserted into the RAA

=>  For more details please see attached document