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OracleConnection.Open Method

Opens a connection to a database with the property settings specified by the ConnectionString.

Namespace: System.Data.OracleClient
Assembly: System.Data.OracleClient (in system.data.oracleclient.dll)

public:
virtual void Open () override
public void Open ()
public override function Open ()
Not applicable.

Exception typeCondition

InvalidOperationException

The connection is not open.

OracleException

Cannot change the database.

The OracleConnection draws an open connection from the connection pool if one is available. Otherwise, it establishes a new connection to the database.

NoteNote:

If the OracleConnection goes out of scope, the connection it represents does not close automatically. Therefore, you must explicitly close the connection by calling Close.

Windows 98, Windows Server 2000 SP4, Windows Millennium Edition, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0, 1.1

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