OracleConnection.Open Method

Reference

Definition

Namespace:: System.Data.OracleClient

Assembly:: System.Data.OracleClient.dll

Important

Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.

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

public:
 virtual void Open();

public:
 override void Open();

public void Open();

public override void Open();

abstract member Open : unit -> unit
override this.Open : unit -> unit

override this.Open : unit -> unit

Public Sub Open ()

Public Overrides Sub Open ()

Implements

Open()

Exceptions

InvalidOperationException

The connection is not open.

OracleException

Cannot change the database.

Remarks

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

Note

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.

Applies to

Product	Versions
.NET Framework	1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1

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