Memory Limitations with IBM Enterprise COBOL Compiler

Recently I learned the hard way that IBM Enterprise COBOL compiler cannot generate 8-byte long POINTER variables, but only 4-byte pointers, meaning, that you cannot use more than 2GB in COBOL on a mainframe. I.e., you cannot make use of AMODE=64 with COBOL on the mainframe. You can run in AMODE=64, but you cannot exploit it. BTW, we have the year 2013. So, no big-data on mainframe with COBOL.

IBM Assembler and C/C++ can fully exploit AMODE=64, i.e., can use 8-byte long pointers.

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2 thoughts on “Memory Limitations with IBM Enterprise COBOL Compiler

  1. Pingback: What Makes a Good Programming Environment? | Elmar Klausmeier's Weblog

  2. Pingback: No Perl and PHP on Mainframe from IBM | Elmar Klausmeier's Weblog

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