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System Components and Execution › CA TLMS Process Flow › TSO Inquiry With Update Process Steps

TSO Inquiry With Update Process Steps

  1. A VMF inquiry/update is initiated by a TSO user.
  2. TSO accesses the VMF in read-only mode using a private copy of the TLMSVMRW module.
  3. TLMSVMRW retrieves a record from the VMF using the VSN (retrieval by DSN is also possible, using a VMF Index file, not shown in this discussion).
  4. To initiate an update, a CA TLMS transaction with a transaction code of 3 is built, and the TLMSQMGR SVC is issued (no wait).
  5. The TLMSQMGR module gains control, receives the transaction from the TSO module, and cross-memory posts TLMSMAIN.
  6. TLMSMAIN is activated by the cross-memory post.
  7. TLMSMAIN responds to the post by calling TLMSMSGQ.
  8. TLMSMSGQ receives a copy of the transaction by issuing the TLMSQMGR SVC, then calls TLMSUPDT.
  9. TLMSUPDT accesses the Volume Master File specified in the CTS procedure through routines in its copy of TLMSVMRW.
  10. The VMF is accessed by VSN.
  11. The retrieved VMF record is updated.
  12. (Optional) A copy of the transaction is written to the Alternate Log file if the RECOVRY system option is set to ALTLOG.
  13. TLMSMSGQ is notified that the update is completed.