Registration data sets and REGISET for AR/CTL components
A registration data set is a VSAM KSDS that contains the information necessary for central control over various phases of application program processing with AR/CTL and the AR/CTL BCF component (if active). During configuration of AR/CTL or other BMC Software products that use the BCSS, you define a set of registration data sets, called the REGISET. The BCSS manages the REGISET. Each BCSS uses only one REGISET, but a REGISET can be shared by more than one BCSS (if the BCSSs are running on different MVS images).
You can define two types of registration data sets—primary and duplex—and you can define multiple data sets of each type. Each registration data set contains the same records as the other copies contain, and the BCSS keeps the records and their contents in sync. The REGISET usually is allocated as two primary registration data sets, but it can consist of a maximum of 11 primary and 11 duplex registration data sets.
- BCSS uses a primary registration data set when providing AR/CTL products with responses to REGISET queries. You must have at least one primary registration data set; you can have as many as 11. If you have more than one and the active primary registration data set fails, the next primary registration data set is available and normal processing continues. You can recover the failing data set at a more convenient time, and recovery of the failing data set does not require restoration. If you encounter a failure in a primary registration data set and no other primary registration data set is available, the BCSS stops.
- BCSS uses a duplex registration data set to maintain an active backup copy of the active primary registration data set. Use of a duplex registration data set is optional; you can define as many as 11. Duplex registration data sets are used only for recovering primary registration data sets.
You can restore a primary registration data set by using another primary registration data set in the REGISET, a duplex registration data set in the REGISET, or a backup copy of the primary registration data set.
If you use the AR/CTL BCF component, AR/CTL and the BCF component must share the REGISET. AR/CTL can share the REGISET with other BMC Software products that use the BCSS (such as DATA ACCELERATOR and the DATA PACKER products).
For information about how to allocate and manage the REGISET, see Administering.