DUMP INDD(IN1) OUTDD(OUT1) -
DATASET(INCLUDE(MY.DUMP.DATASET1,MY.DUMP.DATASET2)) -
WAIT(5,2) -
SHARE

The following would result:

1. DFSMSdss issues a RESERVE command on SYSVTOC (this is the default)
   • If the reserve operation fails, DFSMSdss retries thirty times at 3-second intervals, assuming that the installation has not changed the default for system resources.
   • If the RESERVE command is successful, DFSMSdss continues.

   If either of the data set was a VSAM or SMS-managed data set, the VVDS would also be serialized by DFSMSdss. If VVDS serialization fails, none of the data sets are dumped.

2. DFSMSdss issues a shared enqueue on data set name. If the shared enqueue fails, DFSMSdss retries two times at 5-second intervals.
   • If the shared enqueue is successful:
     • DFSMSdss adds the data set name to the list to be dumped.
     • DFSMSdss loops back to the beginning of this step until an enqueue is tried for all data sets.
   • If the shared enqueue fails, DFSMSdss:
     • Issues a message indicating that the data set failed serialization, and does not process the data set.
     • Loops back to the beginning of this step until an enqueue is tried for all data sets.
3. After an enqueue is tried for all specified data sets and at least one was successful, DFSMSdss:
   • Dumps the VVDS (if an integrated catalog facility data set was selected) and the VTOC and dequeues the VTOC.
   • Dequeues VVDS if it was enqueued.
   • Dumps each data set that was successfully enqueued.
   • Dequeues the enqueued data sets.
   • Issues message indicating which data sets were successfully processed.