Connect to Oracle Database on a Guest VM from the - Problem

Hello All,
I've been facing an issue with my Oracle VM. Let me explain:
I have a VM running CentOS 6 with Oracle Database 11g 11.2.0 installed. What I want to do is use SQL Developer, Toad, SQL*PLUS from the host machine that is running Windows 7 64bits.
The VM is using a Host-only Adapter as network connection and a bridged adapter (for when I need to use internet in the box).
Here is the issue, I can ping the VM from the Host without problems and also I can ping the Host from the VM. But I cannot tnsping from the host to the VM.
Listener is configured as default (port 1521) and the tnsnames.ora in the host is correct, but when I tnsping it I get time out messages.
Is it something related to the network between host and VM? Can anyone assit?
Please let me know if you need more information about.
Thanks in advance.

Jaumzors wrote:
Hello All,
I've been facing an issue with my Oracle VM. Let me explain:
I have a VM running CentOS 6 with Oracle Database 11g 11.2.0 installed. What I want to do is use SQL Developer, Toad, SQL*PLUS from the host machine that is running Windows 7 64bits.
The VM is using a Host-only Adapter as network connection and a bridged adapter (for when I need to use internet in the box).
Here is the issue, I can ping the VM from the Host without problems and also I can ping the Host from the VM. But I cannot tnsping from the host to the VM.
Listener is configured as default (port 1521) and the tnsnames.ora in the host is correct, but when I tnsping it I get time out messages.
Is it something related to the network between host and VM? Can anyone assit?
Please let me know if you need more information about.
Thanks in advance.http://www.cyberciti.biz/faq/turn-on-turn-off-firewall-in-linux/

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HostName = 10.20.3.19
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error while trying to connect with odbc datasource
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hi
prop is {HostName=10.20.3.19, Password=dbuser, UserName=dbuser, SID=EDIREAD, Port=1521}
In exception java.sql.SQLException: Io exception: The Network Adapter could not establish the connection
Also I tried to connect with weblogic JDBC driver
Code is here:
import java.io.BufferedReader;
import java.io.ByteArrayInputStream;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.sql.Blob;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.SQLException;
//import com.entrust.toolkit.util.ByteArray;
public class trial{
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Edited by: clcarter on Feb 22, 2011 7:06 AM

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:
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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
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HOST ip address is - 192.168.56.1
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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 =
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(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 =
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(DESCRIPTION =
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(CONNECT_DATA =
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(SERVICE_NAME = orcl)
listner.ora
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# 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")
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(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")
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(DESCRIPTION_LIST =
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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?

Not able to connect remote oracle database over VPN

I can not connect remote oracle database over VPN. tnsping is ok and it shows the server information of remote database. i can also telnet the 1521 port of remote database server. I can connect the same server when it is located in the same LAN. Please help me out this is very urgent.

6b6c669e-6baa-45c4-a6dc-444aef2d5e7a wrote:
I can not connect remote oracle database over VPN. tnsping is ok and it shows the server information of remote database. i can also telnet the 1521 port of remote database server. I can connect the same server when it is located in the same LAN. Please help me out this is very urgent.
First, this is a forum of volunteers. There is no "urgent" here.
"Urgent" means one of two things -
1) people are dying, or
2) you have a customer-facing, revenue-producing production system that is down.
(And to get some perspective on the second case, keep the first in mind.)
For the first, you call whatever civil emergency service seems appropriate.
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---- edit 22 Sep
It occurred to me that I just assumed you were using the same client machine in both cases ... a laptop that you use both at work (local network) and home (vpn). If that assumption is false, there are probably problems with your tns setup on the home (vpn) machine.
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1008737 wrote:
Hi,
I have been trying to connect to Oracle database in my codes. I have tried using OdbcConnection and OleDbconnection. But both did not allowed me to connect to the database. The database, testDb, can be accessed using SQL plus as well as the SQL developer. I even tested the connection successful using ODBC data source administrator.
the following is my code for the connection string:
OdbcConnection connectionString = "Driver={Oracle ODBC Driver};Server=(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP )(HOST=127.0.0.1)(PORT=1521))(CONNECT_DATA=(SID=Te stDb)));Uid=scott;Pwd=password;";
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Hello,
I am trying to connect to oracle database 10.1.0.2.0 from jdeveloper 11.1.2.1.0 to develop an ADF application.
But it is giving me the error
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Role :SYSDBA
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Hi,
I'm trying to connect to oracle database installed on a remote server through odi client installed on my windows machine. Oracle db is on RHEL 64 bit, I believe. I know the connection details such as hostname, sid etc but i'm not able to establish a connection using the oracle jdbc driver. I can perfectly connect to the db via sqldeveloper using tnsnames and also basic connection which rules out the possibility that i might be giving incorrect SID name in ODI connection since I'm using the same details for both
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java.sql.SQLException: Listener refused the connection with the following error:
ORA-12505, TNS:listener does not currently know of SID given in connect descriptor
     at oracle.odi.jdbc.datasource.LoginTimeoutDatasourceAdapter.doGetConnection(LoginTimeoutDatasourceAdapter.java:133)
     at oracle.odi.jdbc.datasource.LoginTimeoutDatasourceAdapter.getConnection(LoginTimeoutDatasourceAdapter.java:62)
     at com.sunopsis.sql.SnpsConnection.testConnection(SnpsConnection.java:1125)
     at com.sunopsis.graphical.dialog.SnpsDialogTestConnet.getLocalConnect(SnpsDialogTestConnet.java:163)
     at com.sunopsis.graphical.dialog.SnpsDialogTestConnet.access$4(SnpsDialogTestConnet.java:159)
     at com.sunopsis.graphical.dialog.SnpsDialogTestConnet$4.doInBackground(SnpsDialogTestConnet.java:519)
     at com.sunopsis.graphical.dialog.SnpsDialogTestConnet$4.doInBackground(SnpsDialogTestConnet.java:1)
     at oracle.odi.ui.framework.AbsUIRunnableTask.run(AbsUIRunnableTask.java:258)
     at oracle.ide.dialogs.ProgressBar.run(ProgressBar.java:655)
     at java.lang.Thread.run(Thread.java:662)
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ORA-12505, TNS:listener does not currently know of SID given in connect descriptor
     at oracle.odi.jdbc.datasource.LoginTimeoutDatasourceAdapter.doGetConnection(LoginTimeoutDatasourceAdapter.java:133)
     at oracle.odi.jdbc.datasource.LoginTimeoutDatasourceAdapter.getConnection(LoginTimeoutDatasourceAdapter.java:62)
     at oracle.odi.core.datasource.dwgobject.support.OnConnectOnDisconnectDataSourceAdapter.getConnection(OnConnectOnDisconnectDataSourceAdapter.java:74)
     at oracle.odi.jdbc.datasource.LoginTimeoutDatasourceAdapter$ConnectionProcessor.run(LoginTimeoutDatasourceAdapter.java:217)
     at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441)
     at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
     at java.util.concurrent.FutureTask.run(FutureTask.java:138)
     at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
     at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
     ... 1 more
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ORA-12505, TNS:listener does not currently know of SID given in connect descriptor
     at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:482)
     at oracle.jdbc.driver.PhysicalConnection.<init>(PhysicalConnection.java:678)
     at oracle.jdbc.driver.T4CConnection.<init>(T4CConnection.java:238)
     at oracle.jdbc.driver.T4CDriverExtension.getConnection(T4CDriverExtension.java:34)
     at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:567)
     at oracle.odi.jdbc.datasource.DriverManagerDataSource.getConnectionFromDriver(DriverManagerDataSource.java:410)
     at oracle.odi.jdbc.datasource.DriverManagerDataSource.getConnectionFromDriver(DriverManagerDataSource.java:386)
     at oracle.odi.jdbc.datasource.DriverManagerDataSource.getConnectionFromDriver(DriverManagerDataSource.java:353)
     at oracle.odi.jdbc.datasource.DriverManagerDataSource.getConnection(DriverManagerDataSource.java:332)
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ORA-12505, TNS:listener does not currently know of SID given in connect descriptor
     at oracle.net.ns.NSProtocol.connect(NSProtocol.java:411)
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     at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:330)
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tnsping works fine. To solve the problem, I changed my JDBC connection string to another format which uses connect description with service name and that solved the problem. This is what I used.
jdbc:oracle:thin:@(DESCRIPTION=(LOAD_BALANCE=on) (ADDRESS=(PROTOCOL=TCP)(HOST=) (PORT=1521)) (ADDRESS=(PROTOCOL=TCP)(HOST=) (PORT=1521)) (CONNECT_DATA=(SERVICE_NAME=)))

How to connect to Oracle database from webdynprojava application

Hi
How to connect to Oracle database from webdynprojava application. where can we provide the code to connect to database.?
Thank You.

Hi,
You need to create Java Bean model. The bean is a typical java bean with default constructor, getter and setter. You can have additional methods for query etc. The attributes in the class will be your model node and attributes.
However you need to configure the connection and create JNDI using visual administrator before writing the code.
You can also consider writing Session EJB with oracle and using them in WD.
http://help.sap.com/saphelp_nwce10/helpdata/en/45/dcaa4f05535591e10000000a1553f7/frameset.htm
Srini

Issues when trying to connect to Oracle database

Hi
We have set up a linked server in SQL Server to connect to an Oracle database. We are using SQL Server 2008 R2 Enterprise (64 bit) on Windows Server 2008 and Oracle client 11g 11.02.00.01 connecting to Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - 64bit Production using UTF8.
Most tables are selectable without error, however, we got this error message for some:
Msg 7347, Level 16, State 1, Line 1
OLE DB provider 'OraOLEDB.Oracle' for linked server 'OurLinkedServer' returned data that does not match expected data length for column '[OraOLEDB.Oracle].Ourfieldname'. The (maximum) expected data length is 6, while the returned data length is 2.
This error message refers to a column of type char(3)
Will the characterset cause this error (I’ve read that SQL Server doesn’t support UTF8)?
If not, is there some other resolution that anyone can think of?
Any suggestions are greatly appreciated.
Thanks a lot!
Tom

Thank You for replying, Justin!
Yes, I can connect successfully to the database through other tools - at the moment I tried SQL*Plus, Net8 Easy Config and Schema Manager.
The Oracle client in the NT machine is 8.0.5.0.0. And unfortunately I do not know anything about the Oracle installation on this machine and at the moment I don't have that person near me too whom to ask also. But I think the installation was ok, because the connection through ODBC was working before the DB upgrade as far as I understood (sorry, again at the moment I don't know what was the previous version of DB. I will ask that information as soon as possible).
The main problem that bothers me at the moment is that I can't install 8.1.* series OraODBC driver with 8.0.5.0.0 Oracle Installer. I managed to install 8.0.6.6.0 version of the driver, but not the newer ones. As far as I've understood I have to upgrade the whole Oracle in the NT machine to upgrade that installer. Am I correct?
Regards,
Madis Priilinn

Connect to oracle database using c program

I am using AIX environment and i want to connect to oracle database using c program.

http://download.oracle.com/docs/cd/E11882_01/appdev.112/e10825/pc_03dbc.htm#i5880

How to connect to oracle database from visual basic 2010 express edition

I have installed visual basic 2010 express edition on windows xp. But visual basic 2010 express edition supports Microsoft sql server database file,Microsoft sql server compact 3.5, Microsoft access database file. I want to connect to oracle database from visual basic 2010 express edition. So what drivers are required and how to do connectivity?

Hello,
I wasn't clear on what you were using to make the connection. I had a look in Visual Studio 2010 (don't have express to test sorry).
I think you mean the Data Sources available under the menu Data-> Datasources. this seems to match the description you give when I
look at the list of datasource options.
In here you can make ODBC connections via the Microsoft .net Data Provider .
If you select ODBC as a datasource you can see listed the DSN's you created - for example I see 2 which use the Oracle ODBC driver.
This assumes you installed an Oracle Client + the oracle version of the ODBC driver (comes with the oracle client).
Once you created a server connection then you should see it in the server explorer.
You can also download the Oracle Developer Tools for Visual Studio which is an add on for VS.
** I suspect this is only for VS 2010 and I didn't see that Express was supported.
http://www.oracle.com/technetwork/developer-tools/visual-studio/overview/index-097110.html
Let me know if that helps.
John

Cannot connect to Oracle database from SQL Server

Hi
We have set up a SQL Server linked server and tried to use this SQL Server linked server to connect to Oracle database. We are using SQL Server 2008 and Oracle client 11g 11.02.00.01. However, we got this error message:
Msg 7347, Level 16, State 1, Line 1
OLE DB provider 'OraOLEDB.Oracle' for linked server 'OurLinkedServer' returned data that does not match expected data length for column '[OraOLEDB.Oracle].Ourfieldname'. The (maximum) expected data length is 6, while the returned data length is 2.
We are able to connect some of the tables ok but some of the tables are not connected and got the above error message.
Any suggestions are greatly appreciated.
Thanks a lot
Tom

Hi
Here is more information. We just found out that the Oracle database team changed the character set to something else and then they changed it back to UTF8.
Currently, it is using UTF8 character set on the Oracle side. Will this causing us this error message on our sql server linked server?
The error message said "The (maximum) expected data length is 6, while the returned data length is 2."
This refers to a field/column with char(1)
Any suggestions are greatly appreciated
Thank you
Tom

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