Oracle Duplex Mode

IMPORTANT

Example

IMPORTANT

Integrating Oracle and Data Protector

Configuring an Oracle Backup

backup format 'New1<DIPSI_%s:%t:%p>.dbf' current controlfile

;

}

Creating Copies of Backed Up Objects

Oracle support the duplex mode, which allows you to create copies of every backed up object to a separate backup device. To enable the duplex feature, perform the following steps:

1.Add the following command to the RMAN script before any allocate channel command:

set duplex=<on 2 ... >

If more than one allocated channel is used, it may happen that some original and copied objects are backed up to the same medium. To prevent this, you should use only one allocated channel when backing up using the duplex mode.

2.Add the following parameter to every format string used for backup:

%c

3.Set the concurrency of each device used for backup to 1.

4.Set the MIN and MAX load balancing parameters according to the following formula:

<number of duplex copies>*<number of allocated channels>

If the duplex is set to 2 and the backup runs with 1 allocated channel, then the MIN and MAX parameters should be set to 2.

If the MIN and MAX load balancing parameters are set to lower values, the backup will hang.

If the MIN and MAX load balancing parameters are set to higher values, it may happen that the original and copied objects are backed up to the same medium.

Chapter 1

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