Directory Structures for Oracle RAC

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B.2 Directory Structures for Oracle RAC

The sample Optimal Flexible Architecture (OFA)-compliant database has a hierarchical directory tree of folders.

Table B-1 Directory Structure for a Sample OFA-Compliant Environment

Directory	Description
`%ORACLE_BASE%`	`C:\app\oracle` The default `ORACLE_BASE` directory, where the software was installed by the Oracle Installation user
`%ORACLE_BASE%\installation_type`	`C:\app\oracle\product\19.0.0` The type of installation under the Oracle base directory. For example, when installing Oracle Database 19c, the value for installation type is `product\19.0.0\db`.
`%ORACLE_HOME%` `(%ORACLE_BASE%\installation_type\Home_name)`	The location in which the Oracle Database software is installed. You can also choose to add a counter, if you have multiple installations of the software. For example, if you are creating a second Oracle home for the Oracle Database 19c software, then the path is as follows: `C:\app\oracle\product\19.0.0\dbhome_2` Note that the Oracle database home is under the Oracle base directory path. An Oracle Clusterware directory must not be under the Oracle base directory path where the database executable files are located.
`%ORACLE_HOME%\database`	The directory in which the local initialization parameter file is stored for the database.
`%ORACLE_BASE%\admin`	`C:\app\oracle\admin` The administrative directory. Note that with Oracle Database 11g and later releases, `bdump`, `cdump`, and `udump` files are relocated to the directory associated with `%ADR_BASE%`.
`%ORACLE_BASE%\admin\db_unique_name`	The database unique name; this is the same as `dbname` when the database name is 8 or fewer characters in length. For example, if your database name is `sales`, the directory path is as follows: `C:\app\oracle\admin\sales`
`%ORACLE_BASE%\admin\db_unique_name\hdump` `%ORACLE_BASE%\admin\db_unique_name\pfile`	The dump destinations for the database server.
`%ADR_BASE%`	This directory path is set by the initialization parameter `DIAGNOSTIC_DEST`, and the path for the Automatic Diagnostic Repository must be located on the same location available to all the nodes. By default, this path is a subset of the Oracle base directory, in the following path: `%ORACLE_BASE%\diag\`
`%ADR_BASE%\bdump` `%ADR_BASE%\cdump` `%ADR_BASE%\udump`	Automatic Diagnostic Repository dump destination trace files.
Oracle Grid Infrastructure for a cluster home (Grid home)	An OFA-compliant path for the Oracle Clusterware home. The default value is `C:\app\19.0.0\grid`. During the Oracle Grid Infrastructure for a cluster installation, Oracle Clusterware and Oracle Automatic Storage Management (Oracle ASM) software is installed.
`Grid_home\bin`	The subtree for Oracle Clusterware and Oracle ASM executable files.
`Grid_home\network`	The subtree for Oracle Net Services configuration files and utilities.

Parent topic: Directory Structure for Oracle RAC Environments