ORACLE Databases and Parallel Server Option 
If an ORACLE database is operated from raw devices, it is possible to use the Parallel Server option of the ORACLE-RDBMS. The SAP utilities for backing up the database support this configuration. In the following sections, the special features of the SAP utilities for backing up when using the Parallel Server option are explained.
ORACLE Databases and Parallel Server Option: Overview Parallel Server Configuration for Using SAPDBA Parallel Server Configuration when Using BRBACKUP, BRARCHIVE and BRRESTORE