OracleConnection Class

An OracleConnection object represents a connection to an Oracle database.

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

3.5, 4.5, 4.6, 4.7

4.5, 4.6, 4.7

4.6.1 or higher

.NET Core

-

-

2.1 or higher

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();
  }
}