8 IMS in the Parallel Sysplex, Volume I: Reviewing the IMSplex Technology
other member is on, in order to send a message. No special sessions are established
between the group members. For example, IMS Connect and IMS both join an OTMA (XCF)
group. When IMS Connect wants to send a message to IMS OTMA, it uses XCF to send the
message without caring where that IMS is located. OTMA’s message user routine is then
driven to inform IMS that a message has arrived from IMS Connect. IMS sends the response
to IMS Connect using the same techniques.
1.4.4 XCF monitoring services
Status monitoring services allow members to monitor the operational status of other
members of the same XCF group. When a member joins a group, it identifies to XCF a
group
user ...