Written by the technology's inventors, this book provides a comprehensive overview of TUXEDO trade;, Novell's leading software system for On-Line Transaction Processing (OLTP). It will give you a clear explanation of OLTP technology, a broad overview of TUXEDO's features, and a detailed, technical guide to building and administering TUXEDO applications. In particular, you will find coverage of TUXEDO's state-of-the-art features, such as ATMI, typed buffers (including FML), the EventBroker trade;, TxRPC, the Application Queuing System, and more. An overall architectural view of a TUXEDO-based application illustrates TUXEDO in action.

Juan Andrade is Corporate Architect at BEA Systems.

This introductory book on the TUXEDO System was written by its principal inventors and architects. The intended audience for the book includes managers of software teams, software architects, and software designers and developers who wish to understand issues in constructing distributed business applications and who wish to see how the TUXEDO System can help them do their jobs. The purpose of this book is to give an overview of, and motivation for, the facilities found within the TUXEDO System. Although this book is neither a reference manual nor a programming guide for the TUXEDO System, the epilogue tells you how to obtain these manuals TUXEDO, as well as providing additional sources of information, for example, case studies, regarding the use of the TUXEDO System.The software which comprises the TUXEDO System derives from a number of computer science disciplines, including networking, database and transaction processing systems, operating systems, and language theory. It is not the intent of this book to explain the theory of these subject areas with any rigor. Rather, topics from them will be cursorily introduced as they relate to the facilities provided by the TUXEDO System. For a comprehensive text that covers much of the theory referenced in this book, we suggest that you read Gray-Reuter.Our book contains interface descriptions, programming fragments, and a complete example. As an introductory book, the intent of these descriptions and programming fragments is to give you a concrete visualization of how the programming facilities of the TUXEDO System may be used. This book is not intended to be a substitute for the TUXEDO System product documentation.A Brief History of the TUXEDO SystemThe TUXEDO System is a set of software modules that enables the construction, execution, and administration of high performance, distributed business applications. Originally planned as a framework for building such applications atop the UNIX Operating System, the TUXEDO System has widened its scope to enable the construction of distributed business systems which integrate a variety of desktop and server operating systems.Construction of the TUXEDO System began in 1983 as an applied, forward-looking work project, at the time called The UNIX Transaction System (UNITS), within the Bell Laboratories division of AT&T. The target applications for UNITS were UNIX-based operations support systems within AT&T. Many of the ideas found within the UNITS System can be traced to the system software components of the LMOS Project LMOS, an application which tracked repair incidents in telephone circuits and which was one of the first successful UNIX-based "down-sized" applications.During the development of LMOS, no substantial commercial database technology was offered on the UNIX Operating System. Thus, UNITS research initially focused on database technology and produced a database system codenamed DUX (Database for UNIX). DUX was used on projects internal to AT&T, but was never sold commercially. To provide for applications requiring a large number of users, UNITS research also began an investigation into client-server-based application technology, and produced a client-server framework codenamed TUX (Transactions for UNIX). Like DUX, TUX was used on internal AT&T projects, but was never sold commercially. Ideas from the DUX and TUX efforts were subsequently combined into a transaction-enabled, client-server communications framework. When this framework was first distributed onto AT&T 3B4000 computers in Release 3.0, Tom Bishop, a principal architect of the 3B4000, coined the term "TUXEDO" when he quipped that "TUX has been Extended for Distributed Operation!"In 1989, the UNITS project was transferred to the UNIX System Laboratories (USL) division of AT&T, and its client-server framework was offered as a commercial product under the name "The TUXEDO System." The TUXEDO System was transferred to Novell, Inc. when it acqui