What is the use of COMMAREA ?Minimum how much data we can
pass from it?
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Answer Posted / david staudacher
The COMMAREA is used to pass data between programs, and to
the next program in a pseudo-conversational sequence. The
COMMAREA may originate in either Working Storage or Linkage
Sections, but best practice is to avoid having identical
layouts in each. The best technique is to code the
following, just after the PROCEDURE DIVISION statement:
IF EIBCALEN = 0
EXEC CICS GETMAIN SET (ADDRESS OF DFHCOMMAREA)
LENGTH (LENGTH OF DFHCOMMAREA) END-EXEC
END-IF
Now you have just ONE copy of the Commarea - always in
Linkage. You don't to move it or worry over whether the
most current data is in Working Storage or Linkage. It's
ALWAYS in Linkage.
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