HP Data Protector A.06.11, Руководство по интеграции

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• Recovery (restore, recovery, and duplication)
How does the integration work?
Ob2rman.pl
executes RMAN, which directs the Oracle server processes on the
target database to perform backup, restore and recovery. RMAN maintains the
required information about the target databases in the recovery catalog, the Oracle
central repository of information, and in the control file of a particular target database.
The main information which
ob2rman.pl
provides to RMAN is:
• Number of allocated RMAN channels
• RMAN channel environment parameters
• Information on the database objects to be backed up or restored
For backup,
ob2rman.pl
uses the Oracle target database views to get information
on which logical (tablespaces) and physical (datafiles) target database objects are
available for backup.
For restore,
ob2rman.pl
uses current control file or recovery catalog (if used) to get
information on which objects are available for restore.
Using the Data Protector integration with RMAN, you can back up and restore the
Oracle control files, datafiles, and Archived Redo Logs.
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.
A backup that includes all datafiles and current control file that belong to an Oracle
Server instance is known as a whole database backup.
These features can be used for online or offline backup of the Oracle target database.
However, you must ensure that the backup objects (such as tablespaces) are switched
into the appropriate state before and after a backup session. For online backup, the
database instance must operate in the
ARCHIVELOG
mode; whereas for offline
backup, objects need to be prepared for backup using the
Pre-exec
and
Post-exec
options in the backup specification.
The Data Protector backup specification contains information about backup options,
commands for RMAN, Pre- and Post-exec commands, media, and devices.
Data Protector Oracle ZDB integration 36