Calling a procedure from drupal I have a procedure structure like this in an Oracle database:

procedure overlapping_course (
  v_id  number,
  v_program varchar2,
  v_message_type  varchar2,
  v_user_type varchar2,
  v_language  varchar2, 
  v_channel varchar2,
  v_country varchar2,
  v_start_date  date,
  v_end_date  date,
 v_return_val  out varchar2
 )


I am trying to call this procedure from Drupal 7 and I am following this link. My code looks like this:

 $conn = Database::getConnection();
 $saved_class = $conn-&gt;getAttribute(PDO::ATTR_STATEMENT_CLASS);
 $conn-&gt;setAttribute(PDO::ATTR_STATEMENT_CLASS, array('PDOStatement')); 
 $statement = $conn-&gt;prepare('call overlapping_course(?,?,?,?,?,?,?,?,?,?)');    

$statement-&gt;bindParam(1, $id,PDO::PARAM_INT);

$id=1;

$statement-&gt;bindParam(1, $program,PDO::PARAM_STRING);

$program='c++';
 -------
 --------


but I am always getting the following error 

Fatal error: Call to undefined method DatabaseStatementPrefetch::bindParam()   in C:\Apache24\htdocs\drupal\includes\database\oracle\database.inc on line 655.
I don't know the problem, but after adding the  following piece of code in my database.ini of oracle directory and changing my calling method prepare('-----') to oraclePrepare('-------') I am able to access the stored procedure with parameters. I got the reference from here

Check for the oraclePrepare('-------') method in database.ini. If it is not there then add following lines in the DatabaseConnection_oracle class.

code Added in DatabaseConnection_oracle class of oracle's database.ini:

 public function oraclePrepare($query)
 {
     return parent::prepare($query);
  }