On Sunday, December 10, 2006, the z/OS V1R6 mainframe operating system is being upgraded to z/OS V1R7 to provide support for new hardware and software applications.
We strongly encourage you to examine your programs now to make sure that you are not using features that IBM no longer supports. In this announcement, we will point you to documentation to help you test and adjust your programs before the date of the upgrade to our operating system.
We expect the upgrade to z/OS V1R7 to be transparent to most existing applications. However, IBM has eliminated support for some application components in this version that are described below.
Additionally, IBM has made updates to components like DFSMS data management, Language Environment (LE), and TCP/IP. Please let us know immediately if you encounter problems using these components in the days after the upgrade is complete. We want to hear from you.
The ISAM access method is not available in z/OS V1R7. You can find IBM's withdrawal of support for ISAM documented in these CNS documents:
OS/VS COBOL Scheduled for Removal August 19, 2003 http://docweb.cns.ufl.edu/news/archived/n0382 z/OS (OS/390) Disk Data Sets At CNS http://docweb.cns.ufl.edu/docs/d0045 Utilities for z/OS (OS/390) Disk Data Sets http://docweb.cns.ufl.edu/docs/d0071
Programs that were written to use ISAM should continue to function if you use the ISAM-VSAM interface function. You can read about this option and how to use it in the following IBM manual:
z/OS V1R7.0 DFSMS Using Datasets APPENDIX1.5 Appendix E. Using ISAM Programs with VSAM Data Sets http://publibz.boulder.ibm.com/cgi-bin/bookmgr_OS390/BOOKS/DGT2D440
Because SLAC Assembler H does not function correctly in z/OS V1R7, and the function of IBM Assembler H cannot be guaranteed, these two assemblers will no longer be available for use after the upgrade to z/OS V1R7. Please check your programs now to make sure that you have time to switch to the supported assembler (IBM High Level Assembler) before Sunday, December 10.
To see if you are using one of the obsolete assemblers, look at the JCL in your program files. Check to see if you are running the program
or any of the following CNS procedures:
ASMHC ASMHCG ASMHCL ASMHCLE ASMHCLG ASMHCM ASMHLIB ASMHXC ASMHXCG ASMHXCL ASMHXCLE
The IBM High Level Assembler was announced as the only supported assembler in 1997 in CNS News Item N0218.
IBM Assembler Changes for MVS http://docweb.cns.ufl.edu/news/archived/n0218/
The following web page contains the current IBM assembler documentation:
High Level Assembler for MVS & VM & VSE V1 R5 (HLASM V1R5) http://publibz.boulder.ibm.com/cgi-bin/bookmgr_OS390/Shelves/ASMSH020
IBM is continuing to remove support for nonfunctional IDCAMS VSAM dataset keywords. With this release, specifications of the obsolete keywords, READPW, UPDATEPW, MASTERPW, CONTROLPW, ATTEMPTS, CODE, and AUTHORIZATION, may cause IDCAMS errors.
In this release (z/OS V1R7), IDCAMS will continue to ignore the IMBED, REPLICATE, and KEYRANGE keywords. But in a future release, these keywords will generate errors. Please watch for future announcements on this topic.
To test applications on the z/OS V1R7 system, batch jobs can be executed on the alternate z/OS system by updating the JCL to add the following JES2 control statement:
CICS applications can be tested within the CICSDEV2 development region. DB2 applications can be tested using the DB0D system. Note that batch jobs executing on the NER2 alternate z/OS system will only be able to communicate with the CICSDEV2 and DB0D systems.
To access TSO on NER2, enter
/A NERAT at the
TPX screen command line. Or, use tn3270 to connect to
nermvsa.cns.ufl.edu and then specify
Note that the NER2 alternate z/OS system is a test system that may be unavailable for short periods of time due to system maintenance.
Manuals for z/OS V1R7 are available in Adobe PDF format or IBM
BookManager format at the IBM z/OS Internet Library web site:
Please take this opportunity to test your programs and make any necessary adjustments to them so that they will continue to work for you after we upgrade our operating system.
If you have questions about this scheduled change to our system, or if it will create a particular problem for your department, please call or write to us at the CNS Support Desk at 352/392-2061, e-mail firstname.lastname@example.org.