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Integrating Oracle and Data Protector
Configuring an Oracle Backup
Chapter 1 51
backup format 'New1<DIPSI_%s:%t:%p>.dbf' current controlfile
;
}
Creating Copies of Backed Up Objects
Oracle Duplex
Mode
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 | ... >
IMPORTANT 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>
Example 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.
IMPORTANT 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.