Creating the configuration control data set

CDC Replication requires that certain configurable settings be specified prior to its execution, so that they can be read and processed during initialization of the CDC Replication address space. These configurable settings are specified as values of keywords in statements in the CDC Replication Configuration Control data set.

The sample JCL provided in the SCHCCNTL data set (CHCPROC member) contains a CHCCNTRL DD statement that names the configuration control data set as <CHC.HCHCA21>.DATA. Using TSO/ISPF or batch JCL, allocate such a data set (after resolving the <CHC.HCHCA21> placeholder) using the same DCB attributes and space allocation as the SCHCDATA data set.

Initial install—Copy the CHCCFGxx, CHCCMMxx, CHCDBMxx, CHCLDRxx, and CHCUCSxx members from the SCHCDATA data set to the <CHC.HCHCA21>.DATA data set.

Upgrade—Copy the CHCCFGxx, CHCCMMxx, CHCDBMxx, CHCLDRxx, and CHCUCSxx members from the previous version. Modify these members as required for version 10.2.1.

Notes:
  • If you wish to be able to revert to the earlier version from version 10.2.1, it is important that you do not alter the value of the SSID keyword found in the earlier version's CHCDBMxx (or TSDDBMxx) member.
  • While the CHCUCSxx member is distributed with only comments in version 10.2.1, it should still be propagated. It provides you with the flexibility to provide additional CCSIDMAP and IANAMAP control statements should there be new code pages that have yet to be incorporated into the set internal to CDC Replication.