E Directory Structure for Oracle RAC Environments

This appendix describes the directory structures for Real Application Clusters (Oracle RAC) software environments. The topics in this appendix are:

Understanding the Real Application Clusters Directory Structure

When you install Oracle Database 10g with Oracle RAC, all subdirectories are under a top-level Oracle base directory, named ORACLE_BASE by default. The ORACLE_HOME and ADMIN directories are also located under the Oracle base directory.

Directory Structures for Real Application Clusters

Table E-1 shows the hierarchical directory tree of a sample OFA-compliant database for Oracle RAC on Windows-based systems:

See Also:

Oracle Database Oracle Clusterware and Oracle Real Application Clusters Administration and Deployment Guide for further information about the ORACLE_HOME and ADMIN directories

Table E-1 Directory Structure for A Sample OFA-Compliant Windows Environment

Root Second-Level Third-Level Fourth-Level Description


The default ORACLE_BASE directory.



The name of the Oracle home by default.



The name of the Oracle Clusterware home by default.


Subtree for Oracle binaries.


Subtree for Oracle Net configuration files, including tnsnames.ora, listener.ora and sqlnet.ora.


\admin subdirectory.


The Oracle RAC script clustdb.sql and initialization parameter files for database creation


A directory from previous releases containing initialization files pointing to the new directory location for parameter files: ORACLE_BASE\admin\db_name\pfile.


Subtree for Oracle RAC database administration files


db_name database administration files for the instance identified by sid.


Ad hoc SQL scripts.


Audit files.


Archived redo log files.


Background process trace files.


Core dump files.


Programs used to create the database.


Database export files


Initialization parameter files


User SQL trace files

See Also:

Oracle Database Platform Guide 10g Release 2 (10.2) for Microsoft Windows for further information about the ORACLE_HOME and ADMIN directories