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Software > Information Management > DB2 Product Family > DB2 for z/OS System requirements Below is a list of the system requirements for DB2 for z/OS and OS/390. For more details, please click on the Technical details link in the navigation bar to the right. DB2 Version 9.1 for z/OS DB2 UDB for z/OS Version 8 DB2 Universal Database for OS/390 and z/OS Version 7 DB2 Universal Database for OS/390 Version 6 DB2 for OS/390 Version 5  Technical details DB2 Version 9.1 for z/OS DB2 UDB for z/OS Version 8 DB2 UDB for z/OS and OS/390 Version 7   Operating System Software Hardware z/OS z/OS Any processor that supports z/Architecture™ with some limitations