Updating Blob

Question

I am trying to write a java program to update blob in db. I am reading binary from filer and trying to update the blob. So table that has payload I am saying
update A
payload = ?
where A.id = 1
But I am getting ORA-00900: invalid SQL statement error.
In java program I am setting BinaryStream. something like
String SQL = "udpate fp set payload = ? where id = " + s + " and length(raw_payload) > 0 ";
System.out.println(SQL);
// Prepare a Statement:
PreparedStatement stat= conn.prepareStatement(SQL);
// Execute
try {
     File f = new File("blob_upd.dat");
BufferedInputStream b = new BufferedInputStream(new FileInputStream(f));
stat.setBinaryStream(1,b,(int)f.length());
System.out.println("Number of rows updated " + stat.executeQuery());
b.close();

Answer 1

I have recently updated Morgan's Library at www.psoug.org with a demo of Oracle's new DICOM data type that involves updating a BLOB.
Compare my working demo with what you are doing.