The Database Synchronization Component (DSC) is specifically designed for sites that are sharing CA ACF2 for z/VM databases between VM and z/OS. It is a formal response to IBM dropping support of non‑ICF catalogs in z/OS after December 31, 1999, and ICF catalog support is not being added to VM or VSE. The DSC allows synchronization of CA ACF2 for z/VM database changes between VM and z/OS systems using CAICCI (and VTAM) as the communications method.
DSC provides the necessary features that keep your CA ACF2 for z/VM Security for z/OS and CA ACF2 for z/VM for VM databases synchronized. That is, all updates, inserts, changes, and deletes you make to any CA ACF2 for z/VM record, from z/OS or VM, are shipped (propagated) to the target systems. You can journal any change you make with DSC to a log file. In case one of the two systems is unavailable, the Database Synchronization Component service machine stores the request in a communication log file until the change is shipped to the target system for processing. When the system becomes available and the necessary connections are in place, the Database Synchronization Component service machine ships any changes that were logged and not processed.
Note: See Database Synchronization Component Processing for information about using the DSC.
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