code: public LargeObject open(int oid, int mode, boolean commitOnClose) throws SQLException {
      return open((long) oid, mode, commitOnClose);
    }
docs: This opens an existing large object, same as previous method, but commits the transaction on
  close if asked.
  
  @param oid of large object
  @param mode mode of open
  @param commitOnClose commit the transaction when this LOB will be closed
  @return LargeObject instance providing access to the object
  @throws SQLException on error