Primary Note: Overview of Redo Logs and Archiving (Doc ID 1503091.1)

Last updated on AUGUST 23, 2023

Applies to:

Oracle Database - Enterprise Edition - Version 10.2.0.1 and later
Oracle Database Cloud Schema Service - Version N/A and later
Gen 1 Exadata Cloud at Customer (Oracle Exadata Database Cloud Machine) - Version N/A and later
Oracle Cloud Infrastructure - Database Service - Version N/A and later
Oracle Database Cloud Exadata Service - Version N/A and later
Information in this document applies to any platform.

Purpose

This note discusses basic information on online and archived Redo Log files and how to manage them within the Oracle Database.

If you want to read more about the same, please refer to the Oracle 11g Documentation at:
http://docs.oracle.com/cd/E11882_01/server.112/e25494/onlineredo.htm#ADMIN007

Details

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In this Document

What is the Redo Log?

Creating Redo Log Groups

Forcing Log Switches

Clearing a Redo Log file

Redo Log Data Dictionary Views

What is the Archived Redo log?

Choosing Between NOARCHIVELOG and ARCHIVELOG Mode

Running a Database in NOARCHIVELOG Mode

Running a Database in ARCHIVELOG Mode

Performing Manual Archiving

Adjusting the Number of Archiver Processes

Setting Initialization Parameters for Archive Destinations

Archive Destination Status

Viewing Information About the Archived Redo Log

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