Tuning Oracle Wait Events

Question:  I need to learn how to eliminate Oracle Wait Events and I understand that you can tune to remove Oracle Wait Events.  What are the steps to tune Oracle wait events?

Answer:  Oracle Wait Events are conditions where a session is waiting for something to happen.  A wait event can be caused by many things, from slow read/write speeds on the disk, to locking situations caused by the architecture, to various kinds of Oracle contentions.  Waits are either system-level or session-level.  A session-level wait event is an event that affects a single user activity within the database.  System-level wait events affect the entire database system. 

For more information on tuning oracle wait events, the following pages will be helpful:

• Oracle Signature Analysis of Wait Events

• Oracle Wait Event Tuning wish v$session_wait

• Top 5 Oracle Wait Events

• Query for Oracle Wait Events with v$system

• Oracle Wait Event Tables

• Oracle Wait Event Classes

• Buffer Busy Wait Events

• Row Lock Contention Wait Event
  

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