Example 3—Using RACF sysplex communication

Your installation has allocated two data sets for the primary RACF® database:

For recovery, the installation also wants a backup data set for each primary RACF data set, although the backup of the data sets is different:

For SYS1.RACFP1, all updates to the primary data set, except statistics, are duplicated on the backup data set.
For SYS1.RACFP2, all updates to the primary data set, including statistics, are duplicated on the backup data set.

Note:

The sysplex communication bit is specified only in the entry for the first data set. The data sharing bit is off.
RACF allocates 51 (255 × .20) resident data blocks for the first backup data set buffer and 10 (50 × .20) for the second.

The following data set name table correctly follows these criteria:

Figure 1. ICHRDSNT example 3 — sysplex communication and split database

AL1(2): Number of data sets in the primary RACF database
CL44'SYS1.RACFP1': Name of first data set in the primary RACF database
CL44'SYS1.RACFB1': Name of first data set in the backup RACF database
AL1(255): Number of resident data blocks (for primary data set)
X'88': Flags; all updates other than statistics are to be duplicated on the backup data set. The sysplex communication bit is on, and the data sharing bit is off.
CL44'SYS1.RACFP2': Name of second data set in the primary RACF database
CL44'SYS1.RACFB2': Name of second data set in the backup RACF database
AL1(50): Number of resident data blocks
X'C0': Flags; all updates, including statistics, are to be duplicated in the backup data set.