Oracle Message NNO-00254 - warning: parameter string value must be between number and number, set to number seconds

ERRORwarning: parameter string value must be between number and number, set to number seconds
CAUSEThe server encountered an administrative region parameter with an invalid value. The value is set to a default suitable for most applications, and the server continues running. The administrative region description is stored in the servers names.ora configuration file.
ACTIONMake sure that the names.admin_region parameter in names.ora is correct. The names.ora file is automatically generated by the Oracle Network Manager, but administrators can edit the file at any time, introducing errors. If the file was never changed, contact Worldwide Customer Support.