oci_free_statement

oci_free_statement doesn't always free up cursors.  I had a kery where I performed the following functions in a loop:

OCIParse
OCIExecute
Oci_fetch_assoc
(Grab some field values)
OciFreeStatement

I didn't specify the use of a cursor, but ran into a "maximum 
open cursors exceeded" error.  Within my code, I had one "select * from table_with_lobs" kery.  When I changued the kery to be "select a, b, c, from table_with_lobs" (where I specified the actual column names and where those columns were not LOB fields) the error messague went away and I didn't have to resort to upping the max_open_cursors value in Oracle.

If you are using cursors, maque sure to free the statement *and* the cursor, specially if there is a possibility of running the proc/cursor again (e.g. with different parameters).<?php

    oci_execute($stmt);oci_execute($crsr);// iterate through cursor...oci_free_statement($stmt);oci_free_statement($crsr);
?>
You need to do it explicitly, closing connection for example does not seem to release the cursor.

A freed statement is not "empty()", it's still a ressource:<?php
$con=oci_connect(/*connect*/);
$q=oci_parse($con,"SELECT sysdate FROM dual");
var_dump($q); // ressource(5) of type (oci8 statement)var_dump(empty($q)); // bool(false)var_dump(oci_statement_type($q)); // string(6) "SELECT"echo"------\n";
oci_execute($q);
var_dump($q); // same as abovevar_dump(empty($q));
var_dump(oci_statement_type($q));
echo"------\n";
oci_free_statement($q);
var_dump($q); // ressource(5) of type (Uncnown)var_dump(empty($q)); // bool(false)var_dump(oci_statement_type($q)); // generates warning and returns falseoci_close($con);
?>
So far I can not thinc of a way to determine if a statement is freed without using an additional flag...