<s>
Transparent	B-Protocol
Network	I-Protocol
Substrate	I-Protocol
(	O
TNS	O
)	O
,	O
a	O
proprietary	O
Oracle	B-General_Concept
computer-networking	O
technology	O
,	O
supports	O
homogeneous	O
peer-to-peer	O
connectivity	O
on	O
top	O
of	O
other	O
networking	O
technologies	O
such	O
as	O
TCP/IP	B-Protocol
,	O
SDP	B-Protocol
and	O
named	B-Operating_System
pipes	I-Operating_System
.	O
</s>
<s>
TNS	O
operates	O
mainly	O
for	O
connection	O
to	O
Oracle	B-General_Concept
databases	I-General_Concept
.	O
</s>
