ORA-12545

Hi gurus,

	Anyone of u have come across the ora-12545 error? 
	I am getting this error when i am trying to connect from sqlplus
	8.1.6 to 8.1.5 database. The error message is
	
	Error:
	ORA-12545 Connect failed because target host or object does not
	exist.

	This happens from one m/c alone. Even from this machine tnsping
	is ok to this database.

	It connects from sqlplus 8.1.5 to the same db from another m/c.

	The compatible parameter for the database is 8.1.0.

	I am not able to find the error message help for this particular
	error from the manuals also. 
	
	Waiting for ur replies. Any help will be of great use.