Could not load program lsnrctl error during installation of SAP NW 7.5

Hello All,

We are installing SAP NW 7. 5 with Oracle 12c in AIX 7.1 box.

We are in the process of 10/36  (configure Oracle server Network) and we are getting the below error

12> lsnrctl start

Could not load program lsnrctl:

Symbol resolution failed for lsnrctl because:

        Symbol CreateIoCompletionPort (number 400) is not exported from dependent

          module /unix.

        Symbol GetMultipleCompletionStatus (number 401) is not exported from dependent

          module /unix.

Examine .loader section symbols with the 'dump -Tv' command.

Please let us know how we need to resolve this.

Regards

sub