The PREVENT_S522= parameter in the DBSYSID Macro (used in the generation of the DBSIDPR module) gives you the ability to set a default action for applications using PREVENT_S522= in DBSIDPR and a User Requirements Table (URT) with neither NO522=NO nor PREVENT_S522= specified in the DBURSTR Macro. If not specified in the DBSYSID macro, DBSIDPR provides no default and allows the URT DBURSTR macro parameters NO522= and PREVENT_S522= to apply. If no option is specified in the DBSIDPR module or the URT assembly, the default, as in prior releases, is to have System 522 timeouts prevented using the subtask method.
User applications that provide their own protection should have PREVENT_S522= specified as NO to save the very small overhead. User applications that have multiple independent CA Datacom environments active in one address space and needing protection would be most efficient if only one has PREVENT_S522= specified as other than NO.
For more information, see the CA Datacom/DB Database and System Administration Guide.
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