IDMS Support for Cobol 6.x

Products

• IDMS
• IDMS - Database

Issue/Introduction

This article documents any issues that need to be taken into consideration for IDMS when upgrading to IBM's Enterprise Cobol Release 6.x.

Environment

Release: All supported releases.

Resolution

• There are no PTFs required that are specific to Cobol 6.x. However there are some for Cobol 5.x. See PTFs required for IDMS to be compatible with IBM's Enterprise COBOL release 5.1 and above.
• Specific to Cobol 6.x or higher, client experiences show that when running online dc-cobol programs in the CV, it will make more use of the XA REENTRANT POOL (additional runtime modules loaded). The recommendation is to increase the XA REENTRANT POOL by 20% when moving to Cobol 6.x or later and then monitor usage to see if any more increase may be needed.
• LE cobol programs must run above the line. Make sure they are compiled with the RENT compiler option and that the invoking task code is defined with LOCATION ANY.
• Cobol 6.x programs must reside in a PDSE. See Reason Code 20 loading cobol 6.x programs in IDMS.

Additional Information

DML Reference for COBOL