Oracle Connect Error - Please Help - Urgent...

[musai]

I have created vb oracle application

I installed oracle client in three machine.
All machine was reconfigured after oracle installed

I could see table and record set through sql plus sheet in all machine.

then I made .exe (VB) then it is working fine in two machine.

In one machine, I got log file in the appliaction folder opening vb application

log file contains....

Fatal NI connect error 12560, connecting to:
(DESCRIPTION=(ADDRESS=(PROTOCOL=BEQ)(PROGRAM=oracl e)(ARGV0=oracleORCL)(ARGS='(DESCRIPTION=(LOCAL=YES )(ADDRESS=(PROTOCOL=beq)))'))(CONNECT_DATA=(SID=OR CL)(CID=(PROGRAM=C:\Documents and Settings\105033220\Desktop\try\EOO.exe)(HOST=BNG11 05033220)(USER=105033220))))

VERSION INFORMATION:
TNS for 32-bit Windows: Version 8.1.7.0.0 - Production
Oracle Bequeath NT Protocol Adapter for 32-bit Windows: Version 8.1.7.0.0 - Production
Time: 24-DEC-2007 16:30:19
Tracing not turned on.
Tns error struct:
nr err code: 0
ns main err code: 12560
TNS-12560: TNS:protocol adapter error
ns secondary err code: 0
nt main err code: 530
TNS-00530: Protocol adapter error
nt secondary err code: 126
nt OS err code: 0


I could not identify how to solve this problem.
But through this machine, I could see table, recordset ..


Urgent..


musai

[debasisdas]

please check for network connetivity.

[musai]

please check for network connetivity.

Thanks for replay

could you please tell me that how to check network conectivity.

I have some doubts.

In working machines, there is sqlnet.ora in
\\Client_1\NETWORK\ADMIN
in not working machines this file is not in this folder

is this reason?

musai.

[debasisdas]

are you able to connect to oracle server by using the sql*Plus in that PC.

[musai]

are you able to connect to oracle server by using the sql*Plus in that PC.

Through Sqlplus, it is working that means i can see table, data...

I tried to connect through vb application, sqlnet.log is generating
in this file, which contains error details.

musai