Adding new MRO connections while CICS is running

While your CICS® regions are running, you can add new connections to a CICS region by using the CEDA INSTALL command on that CICS region, to install the group containing the associated CONNECTION and SESSIONS resource definitions. For example:

CEDA INSTALL GROUP(CONNHT#1)

Installs the resource group, CONNHT#1, containing the CONNECTION and SESSIONS resource definitions for the TOR, CICSHTH1.

Notes:
  1. You do not need to close interregion communication to be able to install new MRO connections.
  2. CICS commits the installation of connection definitions at the group level only if all the connections in the group are installed successfully. If the install of any connection fails, CICS backs out the installation of all connections in the group. Therefore, when adding new connections to a CICS region while IRC is open, you must:
    • Ensure that the new connections are in a group of their own.
    • Install the group.

Related tasks
Operating CICS in a multiregion environment
Enabling MRO
Opening interregion communication (IRC)
Defining MRO connections
Changing MRO connections while CICS is running
Closing interregion communication (IRC)
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