DFSOTMA descriptor

Use the optional DFSOTMA descriptor to define global and default attributes, limits, and types of support that apply to all OTMA clients.

The DFSOTMA descriptor is an OTMA type-M descriptor that sets system defaults and global parameters for all OTMA clients that connect to this IMS system.

The DFSOTMA descriptor does not support all of the parameters that you can specify on an OTMA client descriptor. Parameters that are not supported, such as DRU= and T/O=, are ignored if they are specified in the DFSOTMA client descriptor.

The global values that you can specify for all OTMA clients include:
  • Message flood protection
  • Global tpipe limit for all the OTMA members or clients
  • Support for multiple active resume tpipe requests
  • Save area prefix allocation limits
  • The maximum number of OTMA descriptors
  • The maximum number of RACF® user IDs that can have cached accessor environment elements (ACEEs) stored in subpool 249.
  • Passing the input LTERM override name to IBM® Workload Manager
  • OTMA default tpipe cleanup or OTMA fast tpipe checkpoint cleanup

Because the DFSOTMA descriptor is a type-M descriptor, when the DFSOTMA descriptor is used, the maximum number of OTMA client descriptors that you can define is one less, because OTMA client descriptors are also type-M descriptors.

The DFSOTMA descriptor is always loaded from the DFSYDTx PROCLIB member regardless of the IMS restart type. There are no checkpoint log records for the DFSOTMA descriptor.