Updating lobs using oraclecommand and oracleparameter
The example uses Oracle BLOB, CLOB, and NCLOB data types. Oracle Connection conn = new Oracle Connection( "server=test8172; integrated security=yes;"); conn. How to insert CLOB field in Oracle using C# Is it possible to do this through a prepared query? Execute Non Query(); // this line throws an exception Edit: My answer below applies for typical use of Clobs where the size is greater than 32k (what they were designed for). Query: I have also found the following description, but I would really want to be able to keep the prepared query. Here's some sample code using some of the concepts you had above: File Stream fs = new System. Last time I checked, Microsoft's Managed Provider for Oracle didn't (but that was awhile ago).
Oracle Connection(connection String); data Connection.
This is the difference to the way that data of LONG or LONG RAW types is stored in database - tables hold their immediate values. The next sample routines show how to upload a file from hard disk to server and download it back. Read Bytes(stream Length), 0, stream Length) 'Perform INSERT Dim my Command As Oracle Command = New Oracle Command( "INSERT INTO Pictures (ID, Pic Name, Picture) VALUES(1,'pict1',: Pictures)", my Connection) Dim my Param As Oracle Parameter = my Command.
Another issue you should be aware of is temporary LOBs. To execute these routines you have to create a table that is described as follows: Public Sub Upload Blob(By Val my Connection As Oracle Connection) 'Open file on disk Dim fs As File Stream = New File Stream("D:\Tmp\test.bmp", File Mode. Read) Dim r As Binary Reader = New Binary Reader(fs) my Connection.
An Oracle Lob differs from an Oracle BFile in that the data is stored on the server instead of in a physical file in the operating system.
It can also be a read-write object, unlike an Oracle BFile, which is always read-only.
=null) You most certainly can read and write blobs using Microsoft's System. Can you reply with a copy of what the stored procedure looks like?