We are planning to upgrade to z/OS V2.2 and with it COBOL v5 . Im being told that programs compiled with COBOL 5 must have there load modules reside in a PDSE. So we are undertaking a conversion from PDS to PDSE so that a program compiled with COBOL 5 will link edit into a PDSE. . . I have no objections to this, I just cant get a straight answer as to why is a PDSE necessary is necessary for COBOL 5 programs. . I have not heard of this requirement with Assembler. What About PL/I and C, are they required to have load modules stored in a PDSE ? . . IBMLInk told me that the Format of a COBOL 5 program is different and as such requires a PDSE. . Is it the COBOL Compiler or the Binder/Linkage Editor that has the requirement. As Far as I know existing programs compiled with pre COBOL 5 compilers can execute out of a PDSE. . . So why cant a application programmer continue to use a Complier prior to COBOL 5 and link edit into the same PDS/E. . . Im Not understanding what/why COBOL 5 needs a PDSE. .
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