Dynamic change of operands for cross-domain resource major node

You can dynamically change the following CDRSC major node operands by editing the VTAMLST and then issuing the VARY ACT,UPDATE=ALL command.

You can also change the NETID operand on the NETWORK statement that applies to one or more CDRSC definition statements below it, but this change will be effective only for those CDRSCs that have NQNMODE=NQNAME coded or defaulted from the current value of the VTAM® start option NQNMODE. For any CDRSC with NQNMODE=NAME, an error message will be issued and the change to NETID will be ignored.

To dynamically change the operand, the resource to which it applies must be inactive. You can dynamically change the operands associated with tables (ASLTAB, MDLTAB, and MODETAB) at any time without deactivating resources.

Model CDRSCs are CDRSCs whose cdrscname value contains wildcards. Clone CDRSCs are CDRSCs built using model CDRSC definitions. See z/OS Communications Server: SNA Network Implementation Guide for more information about model CDRSCs and clone CDRSCs.

Rules: The following rules apply to the use of the VARY ACT,UPDATE=ALL command to change operands on model CDRSCs:
  • The model CDRSC must be inactive to be updated.
  • Changes to a model CDRSC do not propagate to already existing clone CDRSCs, but will affect future clone CDRSCs created using that model.
  • The value of the DELETE operand on the model CDRSC is a characteristic of the model CDRSC that can be changed; the value of the model CDRSC's DELETE operand at the time of clone CDRSC inactivation or clone CDRSC's session termination determines whether or not the clone CDRSC is deleted.
  • A VARY ACT,UPDATE=ALL command cannot delete a model CDRSC that has existing clone CDRSCs.
  • A VARY ACT,UPDATE=ALL command cannot create a conventional CDRSC when there is an existing clone CDRSC with the same name; delete the clone CDRSC first, using VARY INACT,DELETE=YES, and then use VARY ACT,UPDATE=ALL to add the conventional CDRSC.
  • A VARY ACT,UPDATE=ALL command cannot be used to delete clone CDRSCs.

See z/OS Communications Server: SNA Network Implementation Guide and z/OS Communications Server: SNA Operation for more information about the VARY ACT,UPDATE=ALL command.

Parent topic: Cross-domain resource major node