OracleConnection Class

An OracleConnection object represents a connection to an Oracle database.

Note:

The OracleConnection class has been extended and modified in the Oracle.ManagedDataAccess.Azure and Oracle.ManagedDataAccess.Oci assemblies. They expose methods for ODP.NET to connect through Azure and Oracle Cloud Infrastructure token authentication, respectively.

Class Inheritance

System.Object

System.MarshalByRefObject

System.ComponentModel.Component

System.Data.Common.DbConnection

Oracle.DataAccess.Client.OracleConnection

Declaration

// C#
public sealed class OracleConnection : DbConnection, IDbConnection, ICloneable

Requirements

Provider	ODP.NET, Unmanaged Driver	ODP.NET, Managed Driver	ODP.NET Core
Assembly	`Oracle.DataAccess.dll`	`Oracle.ManagedDataAccess.dll`	`Oracle.ManagedDataAccess.dll`
Namespace	`Oracle.DataAccess.Client`	`Oracle.ManagedDataAccess.Client`	`Oracle.ManagedDataAccess.Client`
.NET Framework	See System Requirements	See System Requirements	-
.NET (Core)	-	-	See System Requirements

Thread Safety

All public static methods are thread-safe, although instance methods do not guarantee thread safety.

Example

// C#
 
using System;
using System.Data;
using Oracle.DataAccess.Client; 
 
class OracleConnectionSample
{
  static void Main()
  {  
    // Connect
    string constr = "User Id=scott;Password=tiger;Data Source=oracle";
    OracleConnection con = new OracleConnection(constr);
    con.Open();
 
    // Execute a SQL SELECT
    OracleCommand cmd = con.CreateCommand();
    cmd.CommandText = "select * from emp";
    OracleDataReader reader = cmd.ExecuteReader();
 
    // Print all employee numbers
    while (reader.Read())
      Console.WriteLine(reader.GetInt32(0));
 
    // Clean up
    reader.Dispose();
    cmd.Dispose();
    con.Dispose();
  }
}