I am able to connect to HOST:abc in Oracle Sql*Plus.
I am trying to connect to a unix server (HOST=abc) specified in tnsnames.ora HOST parameter through putty.
However, I am not able to connect.
The result in putty is "host does not exist."
(ADDRESS = (PROTOCOL = TCP)(HOST = abc)(PORT = 1521))
(CONNECT_DATA = (SID = jhk)(SERVER = DEDICATED))