Determining if an Oracle Home is Read-Only

By default, an Oracle Database installation configures all Oracle Database homes in a read-only mode. You can use the Registry Editor to determine if your Oracle home is a read-only Oracle home.

Start Registry Editor and navigate to the ORACLE_HOME_READONLY entry in the HKEY_LOCAL_MACHINE\SOFTWARE\ORACLE\KEY_OracleHomeName Windows Registry key.

The default value for the ORACLE_HOME_READONLY parameter appears as Y in a read-only mode. Do not modify this value.