Oracle Database Discussions

Hello,
I know there are several threads available to this post but please help me in
*step by step process to follow in connecting 2 servers.
I tried everything in internet but got Connection closed error after tnsping of DNS name. Do i need to run any instance sort of thing in SQL server?
I dont have any access on SQL server.Whatever i have to do that has to be only in Oracle server.I got all those information and created ODBC (using SQL server driver) and tested the connection successfully in Oracle server. Altered INIT*.ORA,TNSNAMES.ORA and LISTENER.ORA but when pinging TNS awfully getting the afore said error.

My environment : Oracle 11g server - SQL server 2008 ( both in windows platform).

My
TNS names entry


GSIS =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = 10.1.1.1)(PORT = 63455))
(CONNECT_DATA = (SID=GSIS)
(SERVER = DEDICATED)
(HS=OK)
)
)


Listener entry


LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1522))
(ADDRESS = (PROTOCOL = TCP)(HOST = COB417147.cob.apac.bosch.com)(PORT = 1522))
)
)

SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(SID_NAME = CLRExtProc)
(ORACLE_HOME = C:\Oracle\app\amk1cob\product\11.2.0\dbhome_1)
(PROGRAM = extproc)
(ENVS = "EXTPROC_DLLS=ONLY:C:\Oracle\app\amk1cob\product\11.2.0\dbhome_1\bin\oraclr11.dll")
)
(SID_DESC =
(SID_NAME = GSIS)
(ORACLE_HOME = C:\Oracle\app\amk1cob\product\11.2.0\dbhome_1)
(PROGRAM = hsodbc)
)
)


and

initGSIS


entry


# This is a sample agent init file that contains the HS parameters that are
# needed for the Database Gateway for ODBC

#
# HS init parameters
#
HS_FDS_CONNECT_INFO = GSIS
HS_FDS_TRACE_LEVEL = OFF


#
# Environment variables required for the non-Oracle system
#
#set


**************************************************
when tnsping i am getting

TNS connection closed.

I am awfully stuck here.

Please guide..