On Wed, 26 Feb 2014 16:59:10 -0800, Frank Swarbrick  wrote:

>MOVE 16 TO RETURN-CODE.
>EXEC SQL ROLLBACK END-EXEC.
>GOBACK.

>In this case the program ends with RC = 0, not the expected RC = 16. This is 
>because the EXEC SQL does a COBOL call to a DB2 module. When the DB2 module 
>returns it sets R15 to zero, which implicitly resets RETURN-CODE back to zero. 
>Not what is really desired!

It has been decades since I worked with Cobol, but what I remember about 
RETURN-CODE is that is is used for two purposes:
- to indicate the return code to be passed back to the calling program
- to test the return code passed back from a called program

I am not surprised by the behavior that you describe.

-- 
Tom Marchant

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