Reading Blob with wrong size

Question

Hi,
I stored a .jpg file in a BLOB using Oracle 9i.
When i try to read it, i get the wrong size for the Blob.length() ...
Please can someone help ...
File file = new File(fileLoc);
InputStream is = new FileInputStream(file);
long length = file.length();
OutputStream outstream = blob.setBinaryStream(length);
byte[] buffer = new byte[(int)length];
int readlength = -1;
while ((readlength = is.read(buffer)) != -1)
         outstream.write(buffer, 0, readlength);
is.close();
outstream.flush();
outstream.close();
// TRY TO READ NOW
// Here comes some JDBC stuff ...
File newFile = new File("blob.jpg");
FileOutputStream fos = new FileOutputStream(newFile);
InputStream is2 = blob2.getBinaryStream();
byte[] bb = new byte[(int)blob2.length()];
int readlength2 = -1;
while ((readlength2 = is2.read(bb)) != -1)
        fos.write(bb, 0, readlength2);
is2.close();
fos.flush();
fos.close();

Answer 1

I don't see anything wrong with it myself... assuming that your changes are being committed somewhere...
Somewhere in the collection of examples at
http://www.oracle.com/technology/sample_code/tech/java/sqlj_jdbc/index.html
is a good working example with a CLOB, which should be the just about the same. I think there was also a BLOB example, but I'm not sure...