Tune instance components, primarily using Instance parameters.
Statspack is a set of procedures and scripts supplied with all editions of the Oracle Database software.State the problem in terms that are virtual dj 5.0 rev. 4 crack measurable and directly related to the database operations.The features in these packs are accessible through Oracle Enterprise Manager Database Control, Oracle Enterprise Manager Grid Control, and APIs provided with the Oracle database software: Oracle Database Diagnostic Pack provides automatic performance diagnostic and advanced system-monitoring functionality.Oracle Database 11g: Performance Tuning 2 - 7 Copyright 2010, Oracle and/or its affiliates.Define the problem and state the goal: This is the analysis step.A goal that is specific is easily made measurable as well.All tools have some way to identify the SQL statements, resource contention, or services that are taking the most time.The raw statistics are not as useful as the delta values provided by snapshots that cover periods of interest.Oracle Database 11g: Performance Tuning 2 - 26 Copyright 2010, Oracle and/or its affiliates.Vservice_event includes the service, and vsession includes the session identifier.Note: Existing time columns in other views capture centisecond times.If you determine that more tuning is required, return to step 3 and repeat the process.ID: The buffer busy waits event is called from different places in the session.The timing information gathered on system statistics is cumulative since the instance was started.The system statistics are the most reliable diagnostics available.Top Timed Events Top Timed Events The Top 5 Timed Foreground Wait Events is a good place to start when tuning.
You should always establish measurable tuning goals.
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