I am new on Oracle database, but I have one issue. On my Database server (server1) listener and database instance run correctly and I can use sqlplus to connect to this DB. When I connect to database by using other server, I check the TNS configuration and it is correct but system says: 

ERROR:
ORA-12541: TNS:no listener

My database is Oracle 10gR2

So how can I solve this issue?

oracle-database listener
Edit
Report