Basic Architecture of the BEA Tuxedo ATMI Environment


	BEA Home \| Events \| Solutions \| Partners \| Products \| Services \| Download \| Developer Center \| WebSUPPORT
	http://www.oracle.com/technology/documentation/index.html \| Site Map \| Search \| PDF Files \| Contact \| Glossary

Tuxedo Documentation \| Introducing BEA Tuxedo ATMI \| Local Topics \| Previous Topic \| Next Topic \| Contents

The following figure illustrates the basic architectural elements of a BEA Tuxedo ATMI environment: external interfaces to the environment, the ATMI layer, the MIB, BEA Tuxedo system services, and the environment's interface with standards-compliant resource managers.

The BEA Tuxedo ATMI Basic Architecture

As shown in this illustration, the BEA Tuxedo ATMI environment contains the following components:

Architectural Part	Description
External interface layer	This layer consists of interfaces between the user and the environment. It includes both tools for application development and administration, such as the BEA Administration Console. The BEA Administration Console can interact with standard management consoles. Thus a user can manage a BEA Tuxedo ATMI environment and a network configuration from one console. In addition, application architects and developers can build their own administrative tools or application- or market-specific tools on top of the MIB.
ATMI (Application-to- Transaction Monitor Interface)	The interface between an application and the BEA Tuxedo ATMI environment. The ATMI and the BEA Tuxedo environment implement the X/Open DTP model of transaction processing. An abstract environment, the ATMI supports location transparency and hides implementation details. As a result, programmers are free to configure and deploy BEA Tuxedo applications to multiple platforms without modifying the application code.
Messaging paradigms	Different models of transferring messages between a client and a server. Examples include request/response mode, conversational mode, events and unsolicited notification.
Management Information Base (MIB)	The MIB is an interface that enables users to program and administer a BEA Tuxedo ATMI environment easily. MIB operations enable you to perform all management tasks (monitoring, configuring, tuning, and so on). The MIB allows you to perform one task to one object at a time or to build toolkits with which you can batch tasks and/or objects. (For information about available MIBs, see Available BEA Tuxedo MIBs.)
BEA Tuxedo Services (administrative services and application processing services)	Services and/or capabilities provided by the BEA Tuxedo ATMI environment infrastructure for developing and administering applications. The application processing services available to developers include: data compression, data-dependent routing, data encoding, load balancing, and transaction management. The administrative services include: centralized application configuration, distributed application management, domains partitioning, dynamic reconfiguration, event and fault management, IPC message queues, and workstation management. (For information on administrative services, see the topic titled: Three Ways of Viewing the BEA Tuxedo ATMI Infrastructure.)
Resource Manager	A software product in which data is stored and available for retrieval through application-based queries. The resource manager (RM) interacts with the BEA Tuxedo ATMI environment and implements the XA standard interfaces. The most common example of a resource manager is a database. Resource managers provide transaction capabilities and permanence of actions; they are the entities accessed and controlled within a global transaction.