Directory Tree Differences by Release
Optimal Flexible Architecture has necessitated changes to the Oracle Database directory tree.
- Top-Level Oracle Directory
When you install an Oracle Database Optimal Flexible Architecture-compliant database, there is a top-level Oracle base directory,DRIVE_LETTER: \app\username, whereDRIVE_LETTERis the hard drive letter. - Database File Names
Database files do not have theSIDin the database file name. - Database File Name Extensions
In an Optimal Flexible Architecture-compliant release, database file names have the following extensions:
Top-Level Oracle Directory
When you install an Oracle Database Optimal Flexible Architecture-compliant database, there is a top-level Oracle base directory, DRIVE_LETTER: \app\username, where DRIVE_LETTER is the hard drive letter.
The Oracle base directory contains \ORACLE_HOME directories, \oradata directories (for database files), \diag (for diagnostic data), \flash_recovery_area (for recovery operations), and \admin directories (for database administration files).
Database File Names
Database files do not have the SID in the database file name.
For example, the first control file is named control01.ctl. The SID in the file name is not necessary because all the database files for a particular database are placed in \oradata under a directory called DB_UNIQUE_NAME that is named for that database.