Possible migration paths to CICS Transaction Server for z/OS, Version 3 Release 1 with DBCTL

This section outlines some possible migration scenarios to CICS® Transaction Server for z/OS®, Version 3 Release 1 with DBCTL, according to your current setup.

CICS with local DL/I

CICS with local DL/I:

  1. CICS/ESA 4.1 with local DL/I with IMS™ Version 4 or below
  2. CICS/ESA 4.1 with local DL/I with IMS Version 3 or later and DBCTL (optional)
  3. CICS Transaction Server for z/OS, Version 3 Release 1 with DBCTL.

CICS with local DL/I and data sharing

  1. CICS/ESA 4.1 with local DL/I with IMS Version 4 or below data sharing in a single-MVS environment
  2. CICS/ESA 4.1 with local DL/I with IMS Version 3 or later and DBCTL with data sharing (optional)
  3. CICS Transaction Server for z/OS, Version 3 Release 1 with DBCTL without data sharing.

CICS with shared database

  1. CICS/ESA 4.1 with local DL/I with IMS Version 4 or below CICS shared database
  2. CICS Transaction Server for z/OS, Version 3 Release 1 with DBCTL and BMPs--CICS shared database programs converted to BMPs.

CICS with IMS data sharing and batch

  1. CICS/ESA 4.1 with local DL/I with IMS Version 4 or below and data sharing with batch in a single-MVS environment
  2. CICS Transaction Server for z/OS, Version 3 Release 1 with DBCTL and BMPs without data sharing--batch programs converted to BMPs in a single-MVS environment.

CICS with function shipping

  1. CICS/ESA 4.1 with IMS Version 4 or below, local DL/I--multiple MRO regions -- TORs, AORs, and DORs
  2. Multiple CICS Transaction Server for z/OS, Version 3 Release 1 systems using DBCTL--DBCTL replaces DORs.

CICS with IMS DM/TM

Scenario 1

  1. CICS/ESA 4.1 with local DL/I and IMS DM/TM version 4 or later data sharing (possibly in a multi-MVS environment)
  2. CICS Transaction Server for z/OS, Version 3 Release 1 with IMS TM Version 6 or later with DBCTL in a single-MVS environment.

Scenario 2

  1. CICS/ESA 4.1 with IMS DM/TM Version 3 or later with LU 6.1 in a single-MVS environment or multi-MVS
  2. CICS Transaction Server for z/OS, Version 3 Release 1 with IMS DM/TM Version 6 or later with DBCTL (application program rewritten) in a single-MVS environment.

Related concepts
Migration considerations for DBCTL
Other methods for accessing DL/I
Suggested migration procedure to DBCTL
Planning your new DBCTL setup
Setting up test and production systems for CICS DBCTL
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