Using COBOL user exit routines with DFSORT
You can write DFSORT E15 and E35 user exit routines in COBOL. For details about the COBOL user exit routine interface, refer to Using your own user exit routines in the z/OS® DFSORT Application Programming Guide.
About this task
- The COBOL routine should not contain
SORTorMERGEstatements. - The COBOL routine should not return by using
STOP RUN. - The return code to be passed back to DFSORT must be set using
the
RETURN-CODEspecial register. - DFSORT might use high-half of the general registers. If the COBOL
exit routine is compiled with Enterprise COBOL V5
or later versions, the
HGPR(PRESERVE)compiler option must be used. This is the default setting of theHGPRoption.