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OPS/REXX programs can reside in OPSEXEC data set libraries or in data sets elsewhere in the SYSEXEC concatenation. Programs in data sets allocated to OPSEXEC execute faster because OPS/REXX can execute them without compiling them first.
When you invoke a program, OPS/REXX always looks for it first in the OPSEXEC libraries. This is true as long as you have allocated the OPSEXEC ddname. If the program is not there, OPS/REXX looks in the SYSEXEC libraries and, after finding it, reads, compiles, and runs it.
Note: To avoid slowing down CA OPS/MVS processing, use the OPSEXEC DD, which prevents REXX code from being compiled at runtime.
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