Under Language Environment, some of the options available under the OS
PL/I run-time are no longer available, and some have been renamed,
redefined, or merged with other options. In addition, some important
new options are now available.
The dropped options are:
The renamed and merged options are:
- HEAP redefines HEAP
- NATLANG replaces LANGUAGE
- RPTSTG replaces REPORT
- STACK merges ISASIZE and ISAINC
- TRAP merges SPIE and STAE
Some of the important new options are:
- ABTERMENC
- ALL31
- DEPTHCONDLMT
- ERRCOUNT
- MSGFILE
- STORAGE
- XUFLOW
For more and complete information about run-time options, see
the z/OS Language Environment Programming Reference,
but note the following key points:
- For compatibility with OS PL/I, use the following options:
- ABTERMENC(RETCODE)
- DEPTHCONDLMT(0)
- ERRCOUNT(0)
- TRAP(ON)
- XUFLOW(ON)
- You must specify the following options in your AMODE(24) applications:
- ALL31(OFF)
- HEAP(,,BELOW)
- STACK(,,BELOW)
- Never use RPTSTG(ON) in any performance-critical application.
- Never use STORAGE(,,00) in any performance-critical application.
- You must specify POSIX(ON) in any multi-threaded application.
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