Oracle Data Access Components (ODAC) for Windows Installation Instructions
32-bit Release 220.127.116.11.20
Download includes the following products:
a) Oracle Developer Tools for Visual Studio (18.104.22.168.20)
b) Oracle Data Provider for .NET 2.0 (22.214.171.124.20)
c) Oracle Providers for ASP.NET (126.96.36.199.20)
d) Oracle Database Extensions for .NET 2.0 (188.8.131.52.20) -- upgrade only
e) Oracle Services for Microsoft Transaction Server (184.108.40.206.20)
f) Oracle Provider for OLE DB (220.127.116.11.20)
g) Oracle Objects for OLE (18.104.22.168.20)
h) Oracle ODBC Driver (22.214.171.124.0)
i) Oracle SQL*Plus (126.96.36.199.0)
j) Oracle Client (188.8.131.52.0)
k) Oracle Universal Installer (184.108.40.206.0)
The following items are required on a system to use this software:
The instructions below apply to installing ODAC using Oracle Universal Installer. For instructions on xcopy ODAC installation, refer to the README included with that particular installation.
1. Download ODTwithODAC1110720.zip into a temporary directory.
Do not download this file into the "Tmp" directory.
2. Unzip its contents to the directory.
3. Run Oracle Universal Installer (OUI) by launching the setup.exe that was unzipped in the same directory.
4. OUI will lead you through ODAC installation on your machine. After the installation, you may delete the zip file and the unzipped folders and files.
Note: Oracle ODBC Driver and SQL*Plus are not listed separately as individually installable items in the OUI tree view control. If you wish to install these two products, choose Oracle Instant Client in the tree view control.
Connection Setup Quick Start
These quick start instructions assume you have a valid username and password for the database server.
Note: In the setup instructions below, ORACLE_HOME represents the directory where the Oracle client Home was installed on your machine. A typical directory for an OUI Oracle client Home is:
You will need to know where this directory is before proceeding.
1. Copy the sqlnet.ora file located in the following directory:
to this directory:
This file tells the Oracle client by what methods (e.g. EZCONNECT) Oracle client can connect to the Oracle database server.
2. The Oracle client must then specify a valid user name, password, and data source to connect to the database server. To specify a data source, you can use the EZCONNECT format. In the ODP.NET data source attribute, use the following format to define how the client connects to the database server:
<data source alias> =
(ADDRESS = (PROTOCOL = TCP)(HOST = <hostname or IP>)(PORT = <port>))
(SERVER = DEDICATED)
(SERVICE_NAME = <database service name>)
Common Install and Setup Issues
1. Consult the release notes first for any known issues or limitations.
2. Check if the Oracle data access components were properly downloaded by comparing the download size to the one listed on the download page.
3. If you have more than one Oracle Home installed on the same machine (e.g. Oracle 10g Release 2 client and Oracle 11g Release 1 client), by installing the Oracle 220.127.116.11 client, OUI will establish this client as the Oracle Home all your existing applications will use. For more information on using Multiple Oracle Homes, consult the ODP.NET documentation.
4. It's highly recommended that ODP.NET be installed to a new Oracle Home. Installing ODP.NET on top of an existing Oracle home may break existing Oracle applications. This installation contains ODP.NET 18.104.22.168.20 and Oracle Client 22.214.171.124. If you do install on top of an existing Oracle Home, make sure to stop all the Windows services for that Oracle Home (e.g. OracleMTSRecoveryService).
5. This installation provides policy configuration files that can redirect existing 10.2 and 11.1 ODP.NET applications to the current ODP.NET version. The policy files are located in the ORACLE_HOME\odp.net\PublisherPolicy\2.x directory. In addition, the installation of ODP.NET will place ODP.NET policy DLLs into the GAC so that existing applications can start using the newly installed ODP.NET version immediately. However, if this is not desired, be sure to remove the policy DLLs from the GAC.
6. Installing ODP.NET into a new Oracle Home means that you will not have access to any of the Oracle Data Source aliases from your previous installation. To be able to use these existing data source attributes, copy the tnsnames.ora file in the ORACLE_HOME\network\admin directory from your previous Oracle Home installation to the same directory in your new installation. Or you may create the connection aliases manually by following the Connection Setup Quick Start earlier.
7. If errors indicating that "MSVCR80.dll is not found" are observed, install the Visual C++ 2005 runtime libraries.
Additionally, the ODP.NET API documentation is installed as part of Visual Studio .NET Dynamic Help.
Support and Bug Reports
For any bugs and issues, you may participate in on of the OTN discussion forums for ODAC.