Considerations (CTMBLT)

The file referenced by DD statement DAPRINT holds all messages produced by the utility. This file can alternatively be specified as a data set instead of a sysout print file.

The file referenced by DD statement DATABERR holds parameters from the file referenced by DD statement DAINPRM that could not be processed due to syntax errors or other errors. Statement DATABERR is optional. Omitting this DD statement improves the performance (meaning, reduces the elapse time) of the utility; therefore, for very large runs of the CTMBLT utility, consider removing this statement from the JCL.

Parameters in the file referenced by DD statement DAINPRM can be specified either as in-stream data or as 80-byte card image data.

It is unnecessary to specify DD statements for scheduling libraries because the utility dynamically allocates job-scheduling libraries according to the LIBRARY parameter. A DASCHD DD statement is required when the LIBRARY parameter is not specified as the first input parameter of the utility. For example

Use of this DD statement is also recommended in any of the following situations:

• The CTMBLT utility creates a single job-scheduling library.
• Many members are created within the library.