Yes. Mixing levels can cause problems. The migration guide is your friend and can lead you through the troubled waters.
My personal ROT* is that the runtimes should always be at a level that is equal to or greater than all of the compilers. You can run different levels of runtimes on different LPARs so long as the first ROT is met on a global basis. That is, a program can be complied on any LPAR and run on any LPAR and still meet that ROT. But you should *never* try to run more than one level of runtimes within a given LPAR. STEPLIB, JOBLIB, etc are not a reliable way to control that. The link list should contain only the one instance. Runtimes=LE. *ROT= Rule of thumb. Something to do when in doubt. HTH and good luck. -----Original Message----- From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On Behalf Of munif sadek Sent: Tuesday, February 06, 2007 7:38 PM To: [email protected] Subject: COBOL in sysplex I am migrating Ent COBOL for Z/OS & OS/390 3.4 and z/OS 1.7 in one of our parallel sysplex system replacing IBM COBOL for OS/390 & VM 2.2.0 and z/OS 1.4. My concern is about the run time environment and upward compatibility of COBOL /LE especially for CICS - DB2 - COBOL programs compiled in z/OS 1.7 and running in z/OS 1.4. Is there any thing I need to be concerned about? Regards, Munif NOTICE: This electronic mail message and any files transmitted with it are intended exclusively for the individual or entity to which it is addressed. The message, together with any attachment, may contain confidential and/or privileged information. Any unauthorized review, use, printing, saving, copying, disclosure or distribution is strictly prohibited. If you have received this message in error, please immediately advise the sender by reply email and delete all copies. ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
