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Master Note: Database System Monitor Process (SMON) (Doc ID 1495163.1)

Last updated on AUGUST 04, 2018

Applies to:

Oracle Database - Enterprise Edition - Version 9.2.0.8 and later
Information in this document applies to any platform.

Purpose

 To have an overview of SMON process and its functions

Scope

 Applies to Non RAC environment

Details

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In this Document
Purpose
Scope
Details
 Concepts
 Instance Recovery
 When Oracle Database Performs Instance Recovery
 Instance Recovery Phases
 Cache Recovery
 Transaction Recovery
 Temporary Segment Cleanup
 When does SMON cleanup temporary segments?
 Temporary Segments in a Permanent Tablespace
 Temporary Segments in a Temporary Tablespace
 How to identify whether SMON is cleaning up temporary extents ?
 Effects on Database
 Avoidance
 Force Temp Segment cleanup
 Free Space COALESCE
  Effects:

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