Oracle SQL Tuning with Oracle SQLTXPLAIN [electronic resource] /
Charalambides, Stelios.author.
Oracle SQL Tuning with SQLTXPLAIN is a practical guide to SQL tuning the way Oracle's own experts do it, using a freely downloadable tool called SQLTXPLAIN. Using this simple tool you'll learn how to tune even the most complex SQL, and you'll learn to do it quickly, without the huge learning curve usually associated with tuning as a whole. Firmly based in real world problems, this book helps you reclaim system resources and avoid the most common bottleneck in overall performance, badly tuned SQL. You'll learn how the optimizer works, how to take advantage of its latest features, and when it's better to turn them off. Quickly tune any SQL statement no matter how complex. Build and tune test cases without affecting production. Use the latest tuning features with confidence.
Introduction to SQLTXPLAIN -- The cost-based optimizer environment -- How object statistics can make your execution plan wrong -- How skewness can make your execution times variable -- Troubleshooting query transformations -- Forcing execution plans through profiles -- Adaptive cursor sharing -- Dynamic sampling and cardinality feedback -- Using SQLTXPLAIN with data guard physical standby databases -- Comparing execution plans -- Building good test cases -- Using XPLORE to investigate unexpected plan changes -- Trace files, TRCANLZR and modifying SQLT behavior -- Running a health check -- The final word.
Includes index.
Oracle SQL Tuning with SQLTXPLAIN is a practical guide to SQL tuning the way Oracle's own experts do it, using a freely downloadable tool called SQLTXPLAIN. Using this simple tool you'll learn how to tune even the most complex SQL, and you'll learn to do it quickly, without the huge learning curve usually associated with tuning as a whole. Firmly based in real world problems, this book helps you reclaim system resources and avoid the most common bottleneck in overall performance, badly tuned SQL. You'll learn how the optimizer works, how to take advantage of its latest features, and when it's better to turn them off. Quickly tune any SQL statement no matter how complex. Build and tune test cases without affecting production. Use the latest tuning features with confidence.
Oracle (Computer file)
Database management.
Database Management.