December 2002
Intermediate to advanced
928 pages
85h 29m
English
Content preview from Oracle in a NutshellBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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RMAN Fundamentals
You need to be familiar with a few RMAN concepts as you read the following sections:
- Server processes
RMAN uses a number of server processes to operate. These server processes are started whenever you start RMAN or use one of its features—for example, when you connect to a catalog or allocate a channel for backup.
- Channel
A channel is an RMAN server process that communicates with a particular backup device. You must allocate a channel before you can begin any backup operations.
- Target and catalog
RMAN can interact with two different Oracle databases. The target database is the database for which you are performing backup or recovery operations. The catalog is a database that acts as a repository for information about RMAN activities. The catalog is normally another Oracle database on a different Oracle host; using a different host prevents a failure from destroying the very catalog information that will be needed to recover from that failure.
The catalog includes a specific schema that will hold the relevant information. To create a catalog for RMAN, you first connect to the catalog database with RMAN and issue the CREATE CATALOG command. If you want to use a catalog for RMAN, you will have to register any target databases using RMAN’s REGISTER command before those databases will be able to use the catalog.
You don’t have to use a catalog, because RMAN includes information about any backup in the target database’s control files. However, the catalog gives you more ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.