Special File Requirements for cloned IDMS CVs

Products

• IDMS
• IDMS - Database

Issue/Introduction

The IDMS Systems Operations manual defines a process through which CVs can be cloned. It states that each cloned CV requires its own copy of all journal files. Depending on system configuration, each CV may also require its own copy of the following files:

DDLDCLOG, DDLDCRUN, DDLDCSCR.

How are the unique files to be defined for each cloned CV?

Environment

Release: All supported releases.

Resolution

This statement mentioned above from the Systems Operations manual is correct regarding the uniqueness of files for each cloned CV.

It is not necessary to have a unique or different DMCL for each cloned CV - the same DMCL may be used. 

However, unique JCL for each of the systems will be required. The reason for this is that unique dataset names must be provided for the journals, DDLDCLOG, DDCDCRUN, and DDLDCSCR. 

If the SCRATCH in XA option is specified, then no DDNAME is required for the DDLDCSCR file as it will not be used. The scratch will be allocated entirely in XA storage as needed.