The Data Object Broker is the server for TIBCO Object Service Broker data. It is responsible for all online operations against the Pagestore, which is the repository for all TIBCO Object Service Broker data. For more information about the Pagestore, refer to
TIBCO Object Service Broker Data Sets.
All accesses and changes to the Pagestore go through the Data Object Broker. If a commit request involves another system (an external database or a peer TIBCO Object Service Broker system), the Data Object Broker logs the request in the contingency log until the update request is confirmed by the other system. For more detail, refer to
Chapter 3, Understanding Fail Safe Processing.
The method of communication between the Data Object Broker and Execution Environments depends upon what facilities are available. TIBCO Object Service Broker always attempts to use Cross Memory Services (XMS) for its communications but uses VTAM if XMS cannot be used, and TCP/IP if neither VTAM nor XMS are available.