Changing space, location, or allocation of a WADS

All write-ahead data sets (WADS) must have the same space allocation (number of tracks) and be on the same type of device.

Procedure

  1. Shut down IMS.
  2. Scratch and reallocate WADSs.
  3. Restart IMS with FORMAT WADS keywords.
Changes in the WADS block size after IMS initialization are accomplished by changing the OLDS block size. If you are changing the OLDS block size from being a multiple of 2048 (running in non-z/Architecture mode) to being a multiple of 4096 (running in z/Architecture® mode), make sure that you run the /NRE FORMAT WA or /NRE FORMAT ALL command after changing the OLDS block size.