Remote database support remains in CICS® for function-shipped DL/I requests. Your remote databases can be managed either by local DL/I (if the remote CICS is CICS/ESA 4.1 or below) or by DBCTL.
Function shipping supports the additional system service requests, DEDB requests, and enhanced scheduling (usually known as "data availability") supported by a DBCTL environment, all of which are described in Application programming for DBCTL.
CICS Transaction Server does not support local DL/I or batch shared database.
Batch jobs that use the CICS shared database facility cannot access databases owned by DBCTL. If you want to use CICS shared database jobs with DBCTL, you must migrate them to run as BMPs, which communicate directly with the DBCTL address space.