Integrating Oracle and Data Protector

 

Integration Concept

 

The interface from the Oracle server processes to Data Protector is

 

provided by the Data Protector Oracle integration Media Management

 

Library (MML), which is a set of routines that allows the reading and

 

writing of data to General Media Agents.

 

Besides handling direct interaction with the media devices, Data

 

Protector provides scheduling, media management, network backups,

 

monitoring, and interactive backup.

Oracle Backup

Using this integration, you can perform the Oracle full and incremental

Types Handled by (up to incremental level 4) backup types.

the Integration

With Oracle full and incremental level 0 backups all data blocks per

 

 

datafile are backed up. With Oracle incremental backup (level 1 or

 

higher), only the data blocks that have changed since a previous backup

 

are backed up.

 

The difference between a full backup and an incremental level 0 backup

 

is that the incremental 0 is a base for subsequent incremental backups.

 

Therefore, Data Protector always performs Oracle incremental 0 when

 

you select the full backup type in a backup specification.

 

The full backup type is not related to the number of datafiles included in

 

the backup, and can therefore be performed per single datafile. The data

 

being backed up, regardless of the backup type (full or incremental), is

 

selected and controlled by Oracle.

 

Oracle incremental backups can be differential or cumulative. By

 

default, Data Protector performs Oracle differential incremental

 

backups. By changing the default RMAN script created by Data

 

Protector, you can specify also a cumulative backup. For information on

 

differential and cumulative Oracle backups, see the Oracle Recovery

 

Manager User’s Guide.

 

 

NOTE

Regardless of the Oracle backup type specified, Data Protector always

 

marks the Oracle backups as full in the Data Protector database, since

 

the Data Protector incremental backup concept is different from the

 

Oracle incremental backup concept.

 

 

A backup that includes all datafiles and current control file that belong to an Oracle Server instance is known as a whole database backup.

6

Chapter 1