z/OS BDT Commands
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RETURN — Terminate BDT

z/OS BDT Commands
SC14-7584-00

Purpose

Use this command to terminate the BDT address space.

Format

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>>-prefix--RETURN----------------------------------------------><

prefix
Is the prefix that is appropriate for your console or terminal. Do not use a prefix when submitting commands in a batch job.

Usage Notes

  1. You must be authorized to use this command.
  2. In JES3 systems you must vary JES3 offline before stopping BDT. Use the V,JES3,OFF command to vary JES3 offline.
  3. Instead of the BDT RETURN command you can use the MVS STOP bdt-proc command to stop BDT.
  4. After you issue the BDT RETURN or MVS STOP command you can check the status of the termination process by reissuing RETURN or STOP. This does not speed termination, but it does display the number of DAPs pending termination. The number should be less each time you enter RETURN or STOP. If the number does not change for a long time, and BDT seems to be stuck, you can use the MVS CANCEL command to terminate BDT abnormally and request a dump: CANCEL bdt-proc,DUMP.
  5. To cancel individual BDT sessions without terminating BDT, use the C,SNA or V command.

Results

BDT does not issue a message.

BDT terminates without a dump.

BDT:
  • Fails all transactions currently active and deallocates their data sets.
  • Terminates all DAPs with a completion code of BD033.
  • Suspends TQI to prevent the processing of new work while termination is in progress. (This command suspends TQI in the same way as the S,TQI,SUSPEND command.) Any new work that enters BDT and attempts to bypass TQI will be rejected.

Example of terminating BDT

Using a prefix of *S,BDT, terminate BDT.
*S,BDT,RETURN

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