Contents
What are the performance tuning techniques in Oracle?
Prioritized Tuning Steps
- Step 1: Tune the Business Rules.
- Step 2: Tune the Data Design.
- Step 3: Tune the Application Design.
- Step 4: Tune the Logical Structure of the Database.
- Step 5: Tune Database Operations.
- Step 6: Tune the Access Paths.
- Step 7: Tune Memory Allocation.
- Step 8: Tune I/O and Physical Structure.
What is the difference between SQL performance tuning and database performance tuning?
SQL performance tuning is similar to database performance tuning, but it’s narrower in scope. SQL performance tuning refers to best practices and procedures designed to ensure relational databases are running as efficiently as possible. This primarily involves tuning, managing, and optimizing SQL queries and indexes.
What is performance tuning in Oracle 11g?
Performance tuning is the process of optimizing Oracle performance by streamlining the execution of SQL statements. In other words, performance tuning simplifies the process of accessing and altering information contained by the database with the intention of improving query response times and application operations.
How does tuning work in Oracle Database 11g?
The SQL tuning advisor is run against each statement in turn. The outcome may include both SQL profiles and other recommendations. Suggested SQL profiles are performance tested, and those that result in at least a threefold improvement are accepted if the ACCEPT_SQL_PROFILES parameter is set to TRUE, or reported if it is set to FALSE.
What do you need to know about Oracle Performance?
Oracle Database provides several tools that allow a performance engineer to gather information regarding database performance. In addition to gathering data, Oracle Database provides tools to monitor performance, diagnose problems, and tune applications.
How to enable automatic performance tuning in Oracle?
To enable automatic statistics collection and automatic performance features, the STATISTICS_LEVEL initialization parameter must be set to TYPICAL or ALL. You can administer and display the output of the gathering and tuning tools with Oracle Enterprise Manager, or with APIs and views.
When to start tuning the performance of a database?
Tuning usually implies fixing a performance problem. However, tuning should be part of the life cycle of an application—through the analysis, design, coding, production, and maintenance stages. Often, the tuning phase is left until the database is in production.