CICS® supports the following releases of DB2®:
CICS provides a CICS-DB2 attachment facility (the CICS DB2 adaptor) that works with all supported releases of DB2. The CICS DB2 attachment facility is shipped on the CICS Transaction Server product tape, and you must use this version of the attachment facility to connect a CICS Transaction Server region to DB2.
The CICS DB2 attachment facility has been supplied by CICS since CICS/ESA 4.1. Always use the correct CICS-DB2 adaptor for the release of CICS under which a region is running.