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Visual Studio Oracle Connection Error

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Why can't the second fundamental theorem of calculus be proved in just two lines? ODP.NET provides standard ADO.NET data access, while exposing Oracle database-specific features, such as XML DB, data access performance optimizations, and Real Application Clusters load balancing and fast connection failover. From the Project types list, select Visual C#: Windows. Somewhere in the Oracle docs I saw the key. http://gmailpush.com/visual-studio/visual-studio-oracle-connection-tns-error.html

From the Debug menu, select Start Without Debugging. I want to... An OracleDataReader can retrieve values for multiple columns and multiple rows. Who knows. –Matt Nov 22 '10 at 15:33 I ended up using an inline TNS names entry: Data Source=(DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=TCP)(HO‌ST=servername)(PORT=‌1521)))(CONNECT_DATA‌=(SERVER=DEDICATED)(‌SERVICE_NAME=service‌name)));User Id=username;Password=********; –Matt Oct 27 '11 at 15:37 add a comment|

How To Connect Oracle 10g With Visual Studio 2010

You have succeeded in implementing a connection to an Oracle Database instance. From your Windows Program menu, start Visual Studio. What are the computer-like objects in the Emperor's throne room?

Subhroneel Ganguly 65,019 views 32:57 How to connect vb to oracle - Duration: 9:17. Figure 14 Form with ListBox added Remove the where clause from the query and add the additional columns: cmd.CommandText = _ "select department_id, department_name, location_id from departments" ' VB i'm running win8.1 64bit and i use oracle 10g for VS2012 express edition or perhaps you had better oracle version for me to try 😀 2 years ago Reply YAMINA thank Oracle Developer Tools For Visual Studio 2010 current community chat Stack Overflow Meta Stack Overflow your communities Sign up or log in to customize your list.

Can なし be used in response to a binary question? C# Oracle Connection Example This may take several seconds. The tnsnames.ora file is an Oracle network configuration file that defines database addresses for establishing connections. http://www.oracle.com/technetwork/articles/dotnet/vs2010-oracle-dev-410461.html says: November 18, 2011 at 11:48 am Resolveu minha vida com a utilização do windows 7 x64.

If you find that you need to set up a connection to an Oracle database for your application, and assuming you are able to install the Oracle 10g client and tools Connect To Oracle Database C# Visual Studio 2012 The fix was to set an environment variable called “oracle_sid” and set it to the value of “xe” (since we are using Oracle Express, this is the default). I downloaded the database from: http://www.oracle.com/technology/software/products/database/xe/htdocs/102xewinsoft.html I accepted all defaults through the installation process, and provided a password for the system and sys accounts. Suppose we had a database alias of OraDb defined in a tnsnames.ora file as follows: OraDb= (DESCRIPTION= (ADDRESS_LIST= (ADDRESS=(PROTOCOL=TCP)(HOST=ORASRVR)(PORT=1521)) ) (CONNECT_DATA= (SERVER=DEDICATED) (SERVICE_NAME=ORCL)

C# Oracle Connection Example

Figure 13 An unhandled exception Modify your code to prevent an error when an invalid department_id is entered. have a peek at this web-site The code downloads have error handling implemented. How To Connect Oracle 10g With Visual Studio 2010 Select Build > Rebuild OraWinApp. . Oracle 11g Oracle Data Access Components (odac) With Oracle Developer Tools For Visual Studio Description of the illustration build2.gif If there are any errors indicated, from the View menu, select Error List and fix the errors.

In the Properties Window, change the Text property from label1 to User ID. navigate here In the Start Page, under the Recent Projects heading, click Create: Project. mt database connection is closing once i restarted visual studio. Transcript The interactive transcript could not be loaded. Connect To Oracle Database C# Visual Studio 2010

Since the server isn't going to be hosting a variety of apps this may remain in place for a while. Both Form1 and Form1.xx can be renamed. Drag a Label control on Form1 canvas. . http://gmailpush.com/visual-studio/visual-studio-2010-oracle-connection-error.html Add Visual Basic Imports statements before the Public Class declaration or C# using statements before the namespace declaration.

The data provider is the layer between the .NET application code and the Oracle client connectivity software. Visual Studio 2013 Oracle Connection Note: Adding a reference makes the namespace available within the application. The first Oracle path in the path statement is also client_2.

Here is a code snippet that concatenates the department_name and location_id columns from the previous query: Label1.Text = "The " + dr.Item("department_name") + " department is in " _ +

What is the purpose of the box between the engines of an A-10? Click Quit. In the Properties sheet, change the Text property to Enter Department ID: . Connect To Oracle Database C# Visual Studio 2013 From the File menu, select New Project. .

The first catch statement contains Case statements, which can be used to trap common database errors and display them in a user-friendly manner. Creating a Project in Visual Studio 2010 Let’s create an ODP.NET application that retrieves data from the Oracle database. Different methods are appropriate for different types of SQL commands. this contact form The main window now displays a new title, either HR_Connect_CS - Microsoft Visual Studio or HR_Connect_CS - Microsoft Visual Studio, depending on the language, and contains Form1 shown below.

Dim conn As New OracleConnection(oradb) ' Visual Basic OracleConnection conn = new OracleConnection(oradb); // C# Notice that the connection string is associated with the connection object by being passed through the How should I deal with players who prefer "realistic" approaches to challenges? Add the Catch OracleException block shown below in bold, before the Catch Exception block previously added in the connect_Click() method. Public Class Form1 Dim conn As New OracleConnection Description of the illustration connect2.gif Save your changes.

The data provider is the layer between the .NET application code and the Oracle client connectivity software. Sign in Transcript Statistics 13,698 views 39 Like this video? Be sure to leave room above the controls to allow additions that will be made in Lab 2. The following bug has been filed to correct this behavior: Bug 3807408

Click OK. Oracle .NET 21,235 views 8:56 Connecting C# with Oracle 11g - Duration: 13:08. Attempting to close a closed database connection does not cause an error. It's best to run one version.

NOTE: When necessary, instructions specify Visual C# or Visual Basic. For example, look at the following message displayed when the database is unavailable: Figure 6 An ORA-12545 error caught and displayed to the user An ORA-12545 is quite meaningful for Oracle Data Provider for .NET contains three classes for error handling and support: The OracleError class represents a warning or an error reported by Oracle. This opens Form1, in design view, if it is not already open.

Bind variables improve performance by preventing the database from having to reparse the SQL statement every time the text box value changes. Click the Ok button to continue. Do not confuse this with the actual name given to the code file, which is typically Form1.cs or Form1.vb. Click OK.

If you are writing applications for an older version of the .NET Framework, you should select the appropriate version from the dropdown list. disable M value and Z value by using arcpy How to restrict InterpolatingFunction to a smaller domain? In the next topic you add some error handling so you know exactly why you received the error.