strange behaviour of PHP with Oracle

my conf : Redhat 6.2, Apache 1.3.12, PHP 4.0.1pl2, Oracle 8.0.5 Everything works fine, my php code is ok, it works, but sometimes (without changing anything in the code), I get this : Warning: Supplied argument is not a valid Oracle-Cursor resource in /home/httpd/html/top.php on line 36 and after reloading the page a few times, everything comes ok again (still without changing anything in the source or anywhere else), and the page is correctly displayed ... Does anyone know where this error could come from ??? Thanks for any answer or comment about it ;) ___________________________ Kéwin Kubryk - DBA Oracle Univers Informatique Phone +33 (0) 1 41 03 74 68 Mobile +33 (0) 609 938 648