ODBC and configure

Hi List,

I have installed ODBC and configure the same in RHEL 4.4.

Configured the ODBC in the following way:

[ODBC Data Sources]
testPSQL = PostgreSQL Test

[testPSQL]
Driver=/usr/lib/psqlodbc.so
Description=Sample PostgreSQL DSN
DSN=testPSQL
SERVER=xhost+localhost
Username=postgres
Database=rtdb
ReadOnly=No
Servertype=postgres
Port=5432
FetchBufferSize=99
ServerOptions=
ConnectOptions=
Options=
ReadOnlyi=no
Trace=1
TraceFile=/home/postgres/odbc.trace
Debug=1
DebugFile = /home/postgres/odbc.debug
CommLog = 1

[Default]
Driver = /usr/lib/psqlodbc.so
Description = PostgreSQL Data Source
SERVER=localhost
Port=5432
UserName=postgres
Password=postgres
;Socket=4096
;end odbc.ini

[ODBC]
InstallDir = /usr/lib/libiodbc.so

#=============================================================================#

Steps that I followed to test the ODBC is :

1. Downloaded the "odbctest.c" file from website and copied into unix machine
2. Compile and run the file
Problem:
While running odbctest testPSQL earlier it was working fine, but now everytime its giving the below error:
odbctest: cannot connect to X server

Please suggest if there is any solution for this. I tried with SERVER=localhost and xhost+localhost, again Severname=localhost and xhost+localhost nothing is working after re-compiling and running the .c file.

Thanks,
Ravi Katkar