By Michael Awai, Matthew Bortniker, John Carnell, Kelly Cox, Daniel O'Connor, Mario Zucca, Sean Dillon, Thomas Kyte, Ann Horton, Frank Hubeny, Glenn E. Mitchell II, Kevin Mukhar, Gary Nicol, Guy Ruth Hammond
Oracle company has broadened its improvement platform, integrating open criteria corresponding to Java and XML into the center of the Oracle 8i database. This prolonged programming setting keeps to take advantage of the characteristics of scalability, reliability and potency of the world's such a lot winning information administration software program, yet whilst it offers new demanding situations and possibilities to programmers.
This publication exhibits you ways to strengthen company PL/SQL functions exploiting Java and XML, and the way applied sciences similar to EJBs should be moved to the 8i database. you will paintings via case experiences utilizing a mixture of either well-known and surprising instruments and languages, displaying you the way a few of the programming ways can improve each one other.
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Extra info for Professional Oracle 8i Application Programming with Java, PL/SQL and XML
The demands placed upon a JVM in serving large numbers of client connections simultaneously are severe. The issues are scalability, reliability, and consistency. It is important to segregate client processes in order to prevent run-time errors in one connection adversely affecting another connection. Ideally, a new JVM process should be started for each client to deal with this. However, Sun's JVM release is large at several megabytes, and significant numbers of concurrent JVM processes would soon overwhelm even a powerful machine, using this strategy.
6 platform. ❑ This book focuses on cross-tier development with the new programming integration possibilities of Oracle 8i. ) will be explored not in this book, but in a future Wrox Press title: Oracle Programming Masterclass, due out early in 2001. There are four distributions of Oracle 8i. Each distribution has it own unique niche within the corporate Information Technology (IT) environment. We will start with the smallest Oracle distribution, Oracle Lite, and work our way up to the largest, Oracle Enterprise Edition.
For the first time the same proven language used to obtain the content from the database language could be used to disseminate web content. With the second release of Oracle 8i, has been added the ability to develop PL/SQL Server Pages (PSP) (server-side web pages containing embedded PL/SQL). Perhaps even more exciting is the recent capability to interface with languages such as Java and XML: ❑ Oracle 8i now allows developers to write stored procedures as Java stored within the database. However, Oracle has made sure that these new stored procedure types are seamlessly accessible from traditional PL/SQL code.