Oracle Database Software Is Installed, but Version cannot Be Found
Description:
Oracle Orachk and Oracle Exachk display this message if the tools cannot find the version of the Oracle Database software installed.
Action:
If Oracle Orachk and Oracle Exachk cannot find the correct version, then set the RAT_DB environment variable to the applicable version.
For example:
$ export RAT_DB=11.2.0.3.0