As a replicate data server in a gateway environment, DB2 UDB for z/OS interacts with the Mainframe Connect DirectConnect for z/OS Option database gateway, which accepts commands from the replicate Replication Server and applies those commands to a replicate DB2 UDB database.
As a replicate data server in a gatewayless environment, DB2 UDB for z/OS interacts with Mainframe Connect DirectConnect for DB2 UDB through the AMD2 CICS transaction. AMD2 accepts commands from Replication Server and applies those commands to a DB2 UDB database. Then, AMD2 retrieves the results from those commands and returns the results to Replication Server.
The gatewayless environment requires a TCP/IP
connection to the mainframe. See the Mainframe Connect
Server Option for IBM IMS and z/OS Installation and Administration
Guide.
