• ODBC
  
  
  • New version:
    
    "Driver={Microsoft ODBC for Oracle};Server=OracleServer.world;Uid=Username;Pwd=asdasd;"
    
    
    
  • Old version:
    
    "Driver={Microsoft ODBC Driver for Oracle};ConnectString=OracleServer.world;Uid=myUsername;Pwd=myPassword;"
    
    
    
• OLE DB, OleDbConnection (.NET)
  
  
  • Standard security:
    
    "Provider=msdaora;Data Source=MyOracleDB;User Id=UserName;Password=asdasd;"

    This one's from Microsoft, the following are from Oracle

  • Standard Security:
    
    "Provider=OraOLEDB.Oracle;Data Source=MyOracleDB;User Id=Username;Password=asdasd;"
    
    
    
  • Trusted Connection:
    
    "Provider=OraOLEDB.Oracle;Data Source=MyOracleDB;OSAuthent=1;"
    
    
    
• OracleConnection (.NET)
  
  
  • Standard:
    
    "Data Source=MyOracleDB;Integrated Security=yes;"

    This one works only with Oracle 8i release 3 or later

  • Specifying username and password:
    
    "Data Source=MyOracleDB;User Id=username;Password=passwd;Integrated Security=no;"

    This one works only with Oracle 8i release 3 or later

  • Declare the OracleConnection:
    

    C#:
    using System.Data.OracleClient;
    OracleConnection oOracleConn = new OracleConnection();
    oOracleConn.ConnectionString = "my connectionstring";
    oOracleConn.Open();

    
    
    

    VB.NET:
    Imports System.Data.OracleClient
    Dim oOracleConn As OracleConnection = New OracleConnection()
    oOracleConn.ConnectionString = "my connectionstring"
    oOracleConn.Open()

    
    
    

    Missing the System.Data.OracleClient namespace? Download .NET Managed Provider for Oracle >>

    Great article! "Features of Oracle Data Provider for .NET" by Rama Mohan G. at C# Corner

• Core Labs OraDirect (.NET)
  
  
  • Standard:
    "User ID=scott; Password=tiger; Host=ora; Pooling=true; Min Pool Size=0;Max Pool Size=100; Connection Lifetime=0"

    Read more at Core Lab and the product page.

• Data Shape
  
  
  • MS Data Shape:
    "Provider=MSDataShape.1;Persist Security Info=False;Data Provider=MSDAORA;Data Source=orac;user id=username;password=mypw"

    Want to learn data shaping? Check out 4GuyfFromRolla's great article about Data Shaping >>

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