Determining if an Oracle Home is Read-Only

You can use the Registry Editor to determine if your Oracle home is a read/write or 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 N. The ORACLE_HOME_READONLY parameter value appears as Y if your Oracle home is in a read-only mode. Do not modify this value.