What Is a Domains Gateway


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Introducing the BEA Tuxedo System

A Domains gateway (GWTDOMAIN) is a server provided by the BEA Tuxedo system that enables access to and from remote domains. A Domains gateway runs as a Multiple-Server, Single-Queue set (MSSQ) in which each gateway uses a common request queue and has its own reply queue. In addition, Domains provides two gateway administrative servers. GWADM enables run-time administration of the Domains gateway group. DMADM, a Domains administrative server, enables run-time administration of Domains configuration information.

Domains gateways support the following functionality:

Administration-A gateway can be booted or shut down exactly as any other BEA Tuxedo server. Run-time administration is provided through an administrative server, DMADM. Using DMADM, application administrators can change the domain configuration file and tune the performance of a gateway group.
ATMI conversational model-Application programs can establish conversations with programs running in another domain. Remote domains can establish conversations with conversational services offered by local servers.
ATMI request/response model-Application programs using the BEA Tuxedo system can request services from applications running in another domain. Also, remote applications can request services from local servers. No changes are required to the application programs.
Multi-domain interaction-Gateways can communicate with multiple domains of the same type.
Multi-network support-Gateways can communicate with other domains through a variety of networks such as Ethernet and Novell. However, a gateway is limited by the capabilities of the networking library to which it is linked. In other words, a gateway typically supports a single type of network.
Transaction management-Application programs can interoperate with other domains within a transaction. The gateway coordinates the commitment or rollback of transactions running across domains.
Typed buffer support-Gateways can perform encoding and decoding operations for all typed buffers defined by the application.