Oracle TNS-12505 Error - oracle

Question

I am working with Oracle and what I had to do was to export the existing database to new installation.
I have installed new oracle client 8.1 (Previous was 8.0), I have successfully imported all the instance of database,(Users,Roles, everything).
Basically it is Server and from other individual clients it shares data.
What I am facing a problem now is ,
any XYZ client can not varify its login credentials. I am getting two different types of erros. below I will mention:
TNS-12505: TNS:listener could not resolve SID given in connect descriptor
TNS-12500: TNS:listener failed to start a dedicated server process
TNS-12560: TNS:protocol adapter error
TNS-00530: Protocol adapter error
I have tried almost every option by googling the specified errors.
I have configured the TNSNAMES.ora and LISTENER.ora at server installation and test , they are working well.
But the issue is when I connect through client after configuring TNSNAMES using "Net8 Assitant" it shows the following error.
TNS-12505: TNS:listener could not resolve SID given in connect descriptor
I will try to attach the Configuration files data:
TNSNAMES.ora # Server
# D:\ORANT\NETWORK\ADMIN\TNSNAMES.ORA Configuration File:d:\orant\NETWORK\ADMIN\tnsnames.ora
# Generated by Oracle Net8 Assistant
DATA =
(DESCRIPTION =
(SOURCE_ROUTE = OFF)
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.0.109)(PORT = 1521))
)
(CONNECT_DATA =
(SERVICE_NAME = data)
(GLOBAL_NAME = data)
(SRVR = DEDICATED)
)
)
LISTENER.ora # Server
# D:\ORANT\NETWORK\ADMIN\LISTENER.ORA Configuration File:d:\orant\NETWORK\ADMIN\listener.ora
# Generated by Oracle Net8 Assistant
LISTENER =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = rwr_mis)(PORT = 1521))
(PROTOCOL_STACK =
(PRESENTATION = TTC)
(SESSION = NS)
)
)
And Finally TNSNAMES.ora # Client
# C:\ORANT\NET80\ADMIN\TNSNAMES.ORA Configuration File:C:\orant\net80\admin\tnsnames.ora
# Generated by Oracle Net8 Assistant
data =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS =
(PROTOCOL = TCP)
(Host = 192.168.0.109)
(Port = 1521)
)
)
(CONNECT_DATA = (SID = ORCL)
)
)
From above settings I am gettin gthe followin gerror at Client side:
TNS-12505: TNS:listener could not resolve SID given in connect descriptor
kindly suggest any solution, I will be very thankful .

Answer 1

update TNSNAMES.ora # client with following code
DATA =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.0.109)(PORT = 1521))
)
(CONNECT_DATA =
(SERVICE_NAME = data)
)
)