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The question, "Why isn't Oracle using my index?" must be one of the most popular (or perhaps unpopular) questions ever asked on the Oracle help forums. You've picked exactly the right columns, you've got them in the ideal order, you've computed statistics, you've checked for null columns—and the optimizer flatly refuses to use your index unless you hint it. What could possibly be going wrong? If you've suffered the frustration of watching the optimizer do something completely bizarre when the best execution plan is totally obvious, or spent hours or days trying to make the optimizer do what you want it to do, then this is the book you need. You'll come to know how the optimizer thinks, understand why it makes mistakes, and recognize the data patterns that make it go awry. With this information at your fingertips, you will save an enormous amount of time on designing and trouble-shooting your SQL. The cost-based optimizer is simply a piece of code that contains a model of how Oracle databases work. By applying this model to the statistics about your data, the optimizer tries to efficiently convert your query into an executable plan. Unfortunately, the model can't be perfect, your statistics can't be perfect, and the resulting execution plan may be far from perfect. In Cost-Based Oracle Fundamentals, the first book in a series of three, Jonathan Lewis—one of the foremost authorities in this field—describes the most commonly used parts of the model, what the optimizer does with your statistics, and why things go wrong. With this information, you'll be in a position to fix entire problem areas, not just single SQL statements, by adjusting the model or creating more truthful statistics.

Relational databases. --- Oracle (Computer file) --- Oracle7.3 --- Oracle 7.3 --- Personal Oracle7 --- Personal Oracle 7 --- Relational data bases --- Databases --- Information Technology --- Computer Science (Hardware & Networks) --- General and Others --- Database management. --- Software engineering. --- Database Management. --- Software Engineering/Programming and Operating Systems. --- Computer software engineering --- Engineering --- Data base management --- Data services (Database management) --- Database management services --- DBMS (Computer science) --- Generalized data management systems --- Services, Database management --- Systems, Database management --- Systems, Generalized database management --- Electronic data processing

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The traditional division of labor between the database (which only stores and manages SQL and XML data for fast, easy data search and retrieval) and the application server (which runs application or business logic, and presentation logic) is obsolete. Although the books primary focus is on programming the Oracle Database, the concepts and techniques provided apply to most RDBMS that support Java including Oracle, DB2, Sybase, MySQL, and PostgreSQL. This is the first book to cover new Java, JDBC, SQLJ, JPublisher and Web Services features in Oracle Database 10g Release 2 (the coverage starts wi

Database management. --- Java (Computer program language) --- Web services. --- Oracle (Computer file) --- Data base management --- Data services (Database management) --- Database management services --- DBMS (Computer science) --- Generalized data management systems --- Services, Database management --- Systems, Database management --- Systems, Generalized database management --- Oracle7.3 --- Oracle 7.3 --- Personal Oracle7 --- Personal Oracle 7 --- Application software --- Cloud computing --- Object-oriented programming languages --- JavaSpaces technology --- Electronic data processing --- Information Technology --- General and Others

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Real Application Clusters (RAC) and the Grid architecture are Oracle's strategy for scaling out enterprise systems to cope with bigger workloads and more users. Many books limit themselves by conceptualizing and theorizing about RAC technology, but this book is the first to portray implementing and administering an Oracle 10g RAC system in a Linux environment. This book features basic concepts underlying Linux and Oracle RAC, design strategies, hardware procurement and configuration, and many other topics. The RAC-specific technologies described include configuration of the interconnect, OCFS, ASM, Cluster Ready Services, and Grid Control. The Oracle features RMAN and Data Guard are also discussed, along with available hardware options. The authors include practical examples and configuration information, so that upon reading this book, you'll be armed with the information you need to build an Oracle RAC database on Linux, whether it is on a single laptop or a 64-node Itanium cluster.

Database management. --- Relational databases. --- Parallel processing (Electronic computers) --- Beowulf clusters (Computer systems) --- Oracle (Computer file) --- Linux. --- Slackware Linux --- SUSE Linux --- Oracle7.3 --- Oracle 7.3 --- Personal Oracle7 --- Personal Oracle 7 --- Beowulf-class computer systems --- Beowulf-class computers --- Beowulf-class PC clusters --- Beowulfs (Computer systems) --- Clusters, Beowulf (Computer systems) --- Parallel computers --- High performance computing --- Multiprocessors --- Parallel programming (Computer science) --- Supercomputers --- Relational data bases --- Databases --- Data base management --- Data services (Database management) --- Database management services --- DBMS (Computer science) --- Generalized data management systems --- Services, Database management --- Systems, Database management --- Systems, Generalized database management --- Electronic data processing --- Information Technology --- General and Others --- Software engineering. --- Database Management. --- Software Engineering/Programming and Operating Systems. --- Computer software engineering --- Engineering --- Oracle (Logiciel) --- Software Engineering.