Listener is listening but when we use sql*plus ORA-12203

Question

Hi all,
listener is listening but when we use sql*plus ORA-12203
we are trying to connect oracle database in VPN, all the configuration is ok, the listener is listening at db-server site with 1521
we can connect with tnsping, but when we connect with
sqlplus it not going through. any boidy has experienced this. any one can help?
Thanks in advance

Answer 1

TNSNAMES.ORA file is
it works when i try with serice name factory through LAN, then im disconnectinag at LAN and try through VPN, it doesnt go.
here is TNSNAMES.ORA copy .
Beq-local.world =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS =
(COMMUNITY = beq.world)
(PROTOCOL = BEQ)
(PROGRAM = oracle73)
(ARGV0 = oracle73ORCL)
(ARGS = '(DESCRIPTION=(LOCAL=YES)(ADDRESS=(PROTOCOL=beq)))')
(CONNECT_DATA = (SID = ORCL)
Tcp-loopback.world =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS =
(COMMUNITY = tcp.world)
(PROTOCOL = TCP)
(Host = 127.0.0.1)
(Port = 1521)
(CONNECT_DATA = (SID = ORCL)
Example1.world =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS =
(COMMUNITY = tcp.world)
(PROTOCOL = TCP)
(Host = Production1)
(Port = 1521)
(CONNECT_DATA = (SID = SID1)
Example2.world =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS =
(COMMUNITY = spx.world)
(PROTOCOL = SPX)
(Service = Server_lsnr)
(CONNECT_DATA = (SID = ORCL)
Example3.world =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS =
(COMMUNITY = nmp.world)
(PROTOCOL = NMP)
(Server = FinanceServer1)
(Pipe = ORAPIPE)
(CONNECT_DATA = (SID = ORCL)
factory =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS =
(COMMUNITY = tcp.world)
(PROTOCOL = TCP)
(Host = DBSERVER)
(Port = 1521)
(CONNECT_DATA = (SID = MYDATABASE)
factory1 =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS =
(COMMUNITY = tcp.world)
(PROTOCOL = TCP)
(Host = 172.27.32.22)
(Port = 1521)
(CONNECT_DATA = (SID = MYDATABASE)
)