Pages with definite structure generate error "ORA-01013 user requested cancel of current operation".

Approximate structure of page which generates ORA-01013 error:
1. Query that returns even records.
2. Loop by this query (fetch). Any query in the loop .
3. Query which is executed for a long time.

Page example:
<?
set_time_limit(0);

$DB_User = "login";
$DB_Pass = "password";
$DB_Name = "name";

if(!($db_Conn = @OCILogon($DB_User, $DB_Pass, $DB_Name)))
	die("Bad Connect");

//loop
for($i=0; $i<150; $i++)
{
	echo "Step ".($i+1);

	/*************
	First query must return more than one record and even records (that vary strange!).
	If it returns odd records, error will not appear.
	**************/
	OCIExecute($r = OCIParse($db_Conn, "
				SELECT 1 FROM DUAL UNION ALL
				SELECT 2 FROM DUAL UNION ALL
				SELECT 3 FROM DUAL UNION ALL
				SELECT 4 FROM DUAL UNION ALL
				SELECT 5 FROM DUAL UNION ALL
				SELECT 6 FROM DUAL UNION ALL
				SELECT 7 FROM DUAL UNION ALL
				SELECT 8 FROM DUAL UNION ALL
				SELECT 9 FROM DUAL UNION ALL
				SELECT 10 FROM DUAL"
				)
			);

   /******
   This is fetch for each record and any query in the loop.
   ******/
	while(OCIFetch($r))
		OCIExecute(OCIParse($db_Conn, "SELECT 'x' FROM DUAL"));

	/******
	Any query which is executed for a long time. During execution this query the error ORA-01013 will appear.
	******/
	OCIExecute(
		OCIParse($db_Conn, "SELECT SHORT_DELAY FROM DUAL")
		);

	echo "- OK <br>";
}

echo "<p>Done.</p>"
?>

Where SHORT_DELAY - oracle function for short delay:

CREATE OR REPLACE FUNCTION SHORT_DELAY
RETURN NUMBER
IS
	vMAX	NUMBER:=10000;
	vTMP	VARCHAR2(2000):='123123123123123123123';
BEGIN
	WHILE vMAX>0
	LOOP
		vTMP := REPLACE(vTMP, '1', '22');
		vMAX := vMAX-1;
	END LOOP;
	RETURN 0;
END;
/

This page will output:
-----
output 1:
-----
Step 1
Warning: ociexecute() [function.ociexecute]: OCIStmtExecute: ORA-01013: user requested cancel of current operation in /opt/hosting/prj/www/test.php on line 45

-----
output 2:
-----
Step 1- OK 
Step 2
Warning: ociexecute() [function.ociexecute]: OCIStmtExecute: ORA-01013: user requested cancel of current operation in /opt/hosting/prj/www/text.php on line 45
------

Configure Line:
'./configure' '--with-curl=/usr/local/curl-7.10.3' '--with-oci8' '--with-zlib' '--with-gd' '--without-mysql' '--with-apxs=/opt/hosting/prj/bin/apxs' '--with-openssl=/usr/local' 

Oracle version:
Oracle8i Enterprise Edition Release 8.1.7.4.0 - Production
With the Partitioning option
JServer Release 8.1.7.4.0 - Production

OCI8 revision:  $Revision: 1.183.2.2 $