Cannot connect to database using Oracle Data Access

I have been able to connect to my database through SqlPlus, but I cannot make the connection to the database through my ASP.Net program.
I set up my connection string following the following format:
*"Data Source=(DESCRIPTION =(ADDRESS_LIST =(ADDRESS = (PROTOCOL = TCP)(HOST = X.X.X.X)(PORT = X)))(CONNECT_DATA =(SERVICE_NAME = SID)(INSTANCE_NAME = SID))(HS = OK)); User Id=Blah; Password=Blah";*
When the program tries to open the connetion, it through
OracleException was caught
Oracle.DataAccess.Client.OracleException was caught
Message=""
StackTrace:
at Oracle.DataAccess.Client.OracleException.HandleErrorHelper(Int32 errCode, OracleConnection conn, IntPtr opsErrCtx, OpoSqlValCtx pOpoSqlValCtx, Object src, String procedure)*
at Oracle.DataAccess.Client.OracleException.HandleError(Int32 errCode, OracleConnection conn, IntPtr opsErrCtx, Object src)
at Oracle.DataAccess.Client.OracleConnection.Open()
at GlobalIQ.Services.DatabaseLayer.SetUpConnection() in C:\GlobalIQ\GlobalIQ\Services\DatabaseLayer.cs:line 30
InnerException:
I do not know if this is because I didn't set something up correctly or that I am missing something. Thanks in advance

user13488403 wrote:
I have been able to connect to my database through SqlPlus, but I cannot make the connection to the database through my ASP.Net program. ODP, ASP-NET providers etc. forums are here
http://forums.oracle.com/forums/category.jspa?categoryID=44
>
I set up my connection string following the following format:
*"Data Source= ... (HS = OK)) ...Is the HS part really needed?

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Just ran all+ commands for oracle user:
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Copyright (c) 1991, 2005, Oracle. All rights reserved.
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Copyright (c) 1997, 2005, Oracle. All rights reserved.
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Good Morning Ed Stevens ;
Nice to see you once again !
I remember , you are very familiar with oracle net services.
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Ed Stevens wrote ..
simply do a "ping oel5.linuxserver" and report the result.
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Copyright (c) 1997, 2005, Oracle. All rights reserved.
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Cant connect to Oracle database using oracle db client

Hi All,
I recently created a virtual machine running windows server 2008 on my windows 7 host. Oracle database 11g is already installed on host OS(windows 7) and I have installed oracle 11g client on the guest OS(windows server 2008) and trying to connect to oracle database from remote server using oracle client but getting this error:
ORA-12504: TNS:listener was not given the SERVICE_NAME in CONNECT_DATAI am trying to connect using oracle client as below:
C:\Users\Administrator>SET ORACLE_SID = HR84DEV
C:\Users\Administrator>SQLPLUS /NOLOG
SQL*Plus: Release 11.2.0.1.0 Production on Fri Feb 10 06:16:34 2012
Copyright (c) 1982, 2010, Oracle. All rights reserved.
SQL> CONNECT SYSADM/[email protected]
ERROR:
ORA-12504: TNS:listener was not given the SERVICE_NAME in CONNECT_DATA
I have created database with name - HR84DEV
HOST ip address is - 192.168.56.1
I googled this error and as most of resources/blogs talked about having correct entry on listner.ora and tnsnames.ora file, I did the changes on both of these files accordingly.
PFB the cotent of both of these files:
tnsnames.ora
# tnsnames.ora Network Configuration File: C:\MyApps\Oracle\product\11.2.0\dbhome_\NETWORK\ADMIN\tnsnames.ora
# Generated by Oracle configuration tools.
LISTENER_ORCL =
(ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.56.1)(PORT = 1521))
ORACLR_CONNECTION_DATA =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))
(CONNECT_DATA =
(SID = CLRExtProc)
(PRESENTATION = RO)
HR84DEV =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.56.1)(PORT = 1521))
(CONNECT_DATA =
(SERVICE_NAME = HR84DEV)
ORCL =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = orcl)
listner.ora
# listener.ora Network Configuration File: C:\MyApps\Oracle\product\11.2.0\dbhome_\network\admin\listener.ora
# Generated by Oracle configuration tools.
SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(SID_NAME = CLRExtProc)
(ORACLE_HOME = C:\MyApps\Oracle\product\11.2.0\dbhome_)
(PROGRAM = extproc)
(ENVS = "EXTPROC_DLLS=ONLY:C:\MyApps\Oracle\product\11.2.0\dbhome_\bin\oraclr11.dll")
(SID_DESC =
(SID_NAME = HR84DEV)
(ORACLE_HOME = C:\MyApps\Oracle\product\11.2.0\dbhome_)
(PROGRAM = extproc)
(ENVS = "EXTPROC_DLLS=ONLY:C:\MyApps\Oracle\product\11.2.0\dbhome_\bin\oraclr11.dll")
LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.56.1)(PORT = 1521))
ADR_BASE_LISTENER = C:\MyApps\Oracle
Please not that I dont have any problem in connect to database locally.

Thanks Nicolas,
Actually, there was a problem with my oracle client installation. I uninstalled it and then installed back again but still, even after following your instructions I get some error.
Here what I did:
Created tnsnames.ora file as below:
HR84DEV =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.56.1)(PORT = 1521))
(CONNECT_DATA =
(SERVICE_NAME = HR84DEV)
Placed it under appropriate directory and then checked the connection with database using the command shown below:
C:\Users\Administrator>tnsping HR84DEV
TNS Ping Utility for 32-bit Windows: Version 11.2.0.1.0 - Production on 10-FEB-2
012 08:42:03
Copyright (c) 1997, 2010, Oracle. All rights reserved.
Used parameter files:
C:\MyApps\Administrator\product\11.2.0\client_1\network\admin\sqlnet.ora
Used TNSNAMES adapter to resolve the alias
Attempting to contact (DESCRIPTION = (ADDRESS_LIST = (ADDRESS = (PROTOCOL = TCP)
(HOST = 192.168.56.1)(PORT = 1521))) (CONNECT_DATA = (SERVICE_NAME = HR84DEV)))
OK (20 msec)
Then tried to connect to database as below:
C:\Users\Administrator>SET ORACLE_SID=HR84DEV
C:\Users\Administrator>SQLPLUS /NOLOG
SQL*Plus: Release 11.2.0.1.0 Production on Fri Feb 10 08:25:56 2012
Copyright (c) 1982, 2010, Oracle. All rights reserved.
SQL> CONNECT SYSADM/SYSADM@HR84DEV
ERROR:
ORA-28547: connection to server failed, probable Oracle Net admin error
But still getting error.
I Googled this error and tried to figure out what the problem is and came across the possible cause which is because I haven't specify that the service should run as a user who is in domain admin group.
well, I am not really sure about this and dont know what user name and password I should enter in OracleserviceHR84DEV-properties-log on-this account.
do I really need to set this?

Connection Problem When Using Oracle Developer Tools for Visual Studio

I tried to create an Oracle Connection in my Visual Studio 2008 after installing Oracle 11g, Oracle Data Access Components (ODAC) with Oracle Devleoper Tools for Vissual Studio version 11.1.0.6.20.
I followed the directions according to "Building .NET Applications Using Oracle Developer Tools for Visual Studio, when I click Test Connection, I keep getting the error message below.
Microsoft Visual Studio
ORA-12170: TNS:Connect timeout occurred
OK
---------------------------

I solved the problem.
This is what I did for the benefit of the embryonic newbe like me.
On the Add Connection Dialog
1.     For Data source name I selected Local Database
2.     I clicked on the specific User Name and I typed SYSTEM
3.     For Password, I typed orcl (the password I setup during the installation) (HR did not work for me for User name and Password according to the tutorial instructions)
4.     For Role, I selected Default
5.     Connection Name, I selected Local Database
6.     Before proceeding any further went to Windows XP SP3 where I was operating from, under Start Menu, I selected Administrative Tools then Services
a.     On the Windows Services (Local) Dialog, under name, I selected OracleServiceORCL and OracleOraDb11g_home1TNSListener. I clicked on them one at a time
b.     On the presented Dialog, under Service Status, I Clicked on the Start Button to start the Services
c.     Then I went back to the Add Connection Dialog. I clicked on Test Connection, it connected okay. I finally clicked on Okay to connect.

I want to connect two database in Oracle

Dear All
I want to connect two database in Oracle ver-10.2.0.1.0 ,And fetch data from 2nd table.
OS - XP Pro.
Regards,
Parwez

Configure remote DB in TNS first.
Create DB link.
CREATE {PUBLIC} DATABASE LINK "DBLINKNAME" CONNECT TO "remoteuser" IDENTIFIED BY "remotepwd" USING 'REMOTEDBTNSALIAS';Query remote tables using
select * from remotetable@DBLINKNAME;

Cannot connect to database using Oracle Data Access

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