Zone and data set sharing considerations

The following identifies the phases of ZONECOPY processing and the zones and data sets that SMP/E may require for exclusive or shared use during each phase. For more information about command phases and data set sharing in SMP/E, see Sharing SMP/E data sets.

1. Initialization

   Global zone

   Read without enqueue.

   Target zone

   Read without enqueue.

   DLIB zone

   Read without enqueue.

   Note: The target zones or distribution zones accessed during this phase are the input zone and the receiving zone.
2. ZONECOPY processing

   Target zone

   Read with shared enqueue (input zone).

   Target zone

   Update with exclusive enqueue (receiving zone).

   DLIB zone

   Read with shared enqueue (input zone).

   DLIB zone

   Update with exclusive enqueue (receiving zone).

   Note: The target or distribution zone specified as the input zone is opened for read access with a shared enqueue, and the target or distribution zone specified in the INTO operand is opened for update access with exclusive enqueue.
3. Termination

   All resources are freed.