CICS VSAM Transparency for z/OS, Version 1.2


Optionally implement a new DDM driver naming exit

Start of change The name of the DDM module is based on the VSAM file name and controlled by the CICS® VT exit VIDDDMEX. If you choose a DIM name of 7 characters or less, the default VIDDDMEX adds the character '#' to the end. For example, if you select MYFILE as the name of a DIM, the DDM name using the default VIDDDMEX becomes MYFILE#. End of change

Avoid using 8-character DIM names. For example, if you select DIM names MYFILE01 and MYFILE02, the DDM in both cases becomes MYFILE0# and the second DDM you generate will overwrite the first. If you have to use 8-character DIM names, you must develop your own version of VIDDDMEX to avoid this.

The default VIDDDMEX module is supplied in load form in cvt210.SVIDLODE. The exit source and JCL to assemble and link the default module is supplied in my.SVIDCNFG.custom member VIDGDMEX.

Steps in the IVP will fail if you change the default exit. If you decide to change the default exit, wait until all parts of the IVP have been run successfully.





Last updated: February 8, 2013 20:42:58