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OracleLob::Append Method (OracleLob^)

.NET Framework (current version)

Other Versions

Appends data from the specified LOB to the current LOB.

Namespace: System.Data.OracleClient
Assembly: System.Data.OracleClient (in System.Data.OracleClient.dll)

Syntax

C++

public:
void Append(
	OracleLob^ source
)

Parameters

source: Type: System.Data.OracleClient::OracleLob^
The LOB from which to append data.

Exceptions

Exception	Condition
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.

Note
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.

Version Information

.NET Framework
Available since 1.1