Red Hat ENTERPRISE LINUX 5.1 - LINUX ORACLE Tuning Manual page 96

Chapter 24. Creating Oracle Directories
/u03/oradata/<db_name_1>
/u03/oradata/<db_name_2>
The mount point /u01 should be used for the Oracle software only. /u02, /u03, /u04 and so on,
should be used for the database files. The db_name represents the DB_NAME initialization parameter
which is typically the same as the SID name for single instance databases.
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