OracleLob.Append(OracleLob) 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.

Appends data from the specified LOB to the current LOB.

public:
 void Append(System::Data::OracleClient::OracleLob ^ source);

public void Append(System.Data.OracleClient.OracleLob source);

member this.Append : System.Data.OracleClient.OracleLob -> unit

Public Sub Append (source As OracleLob)

Parameters

source: OracleLob

The LOB from which to append data.

Exceptions

ArgumentNullException

The source OracleLob is null.

InvalidOperationException

The source OracleLob is null, or the connection is closed.

ObjectDisposedException

The source OracleLob object was closed or disposed.

OracleException

An Oracle error has occurred.

Remarks

To write to the LOB, you must have retrieved the LOB using the FOR UPDATE clause in the SQL SELECT statement, and you must have a local transaction started.

All data from the source LOB is appended to the end of the current LOB. The position of neither LOB is evaluated or changed during this process.

The underlying data types must always be the same. For example, if you are appending from an NClob, the destination OracleLob must also be an NClob.

Бележка

In this release, a write operation to a read-only LOB might succeed, but does not update the LOB on the server. In this case, however, the local copy of the LOB is updated. Therefore, later read operations on the OracleLob object might return the results of the write operation.

Applies to

Продукт	Версии
.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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