IBM MQ for z/OS shared channel configuration

Configure the shared channel by starting the channel initiator and issuing appropriate commands for your configuration.

1. Start the channel initiator using the command:

   /cpf   START CHINIT
   

2. Start an LU6.2 group listener using the command:

   /cpf   START LSTR TRPTYPE(LU62) LUNAME( G1 ) INDISP(GROUP)
   

   The LUNAME of G1 refers to the symbolic name you gave your LU (11).

3. If you are using Virtual IP Addressing using Sysplex Distributor and want to listen on a specific address, use the command:

   /cpf   START LSTR TRPTYPE(TCP) PORT(1555) IPADDR( mvsvipa ) INDISP(GROUP)
   

There can be only one instance of the shared channel running at a time. If you try to start a second instance of the channel it fails (the error message varies depending on other factors). The shared synchronization queue tracks the channel status.

IBM MQ channels do not initialize successfully if the channel negotiation detects that the message sequence number is different at each end. You might need to reset this manually.