Oracle Message TNS-00025 - INTCTL: The ORACLE environment is not set up correctly

ERRORINTCTL: The ORACLE environment is not set up correctly
CAUSEThe ORACLE environment is incorrectly set up.
ACTIONRefer to the Oracle operating system specific documentation for your platform for information on how the ORACLE environment should be set. Correct it and rerun INTCTL. Make sure the ORACLE environment includes the correct directories.