Description:
------------
I have been advised by thiago@php to raise this as a bug, having initially reported it on a note page as an N.B. instead. I have a package in schema "OTHERSCHEMA" to which I create a synonym in "MYSCHEMA" via a db link, thus:

CREATE PUBLIC SYNONYM WEB_ORDER_ENTRY_PACKAGE FOR OTHERSCHEMA.WEB_ORDER_ENTRY_PACKAGE@"DBLINK.UKL";

In the package I have a stored procedure which has an output parameter that returns a ref cursor. The proc definition is thus:

PROCEDURE Test(InWebUserId IN VARCHAR2, OutResults OUT REF_CURSOR);

I call this from MYSCHEMA thus:

BEGIN WEB_ORDER_ENTRY_PACKAGE.Test(:InWebUserId, :OutResults); END;

This fails as detailed below.

Reproduce code:
---------------
$dbh = oci_connect('myuser', 'password', 'mydb');
if ($dbh === false)
	exit('Db connection failed');

$sql = "BEGIN WEB_ORDER_ENTRY_PACKAGE.Test(:InWebUserId, :OutResults); END;";
$stmt = oci_parse($dbh, $sql);

$ok = oci_bind_by_name($stmt, 'InWebUserId', 'hello', 30, SQLT_CHR);
if (!$ok)
	exit('Failed binding param');

$cursor = oci_new_cursor($dbh);
$ok = oci_bind_by_name($stmt, 'OutResults', $cursor, 1000, SQLT_RSET);
if (!$ok)
	exit('Failed binding param');

$ok = oci_execute($stmt);
if (!$ok)
	exit('Failed executing proc');

$ok = oci_execute($cursor);
if (!$ok)
	exit('Failed executing cursor');

$array = array();
while ($row = oci_fetch_array($cursor))
{
	$array[] = $row;
}
print_r($array);

Expected result:
----------------
A results array returned without warnings or errors. Interestingly, if the schemas are on the same database, and the DB Link is omitted in the synonym definition, thus:

CREATE PUBLIC SYNONYM WEB_ORDER_ENTRY_PACKAGE FOR OTHERSCHEMA.WEB_ORDER_ENTRY_PACKAGE;

Then it will work without problems. This suggests that the problem is in the db link. This bug is exhibited when a db link is used regardless of whether the schemas are on the same database or different databases. It does not matter if the synonym is public or private.

Oracle 10.2.0.4.0

PL/SQL:

CREATE OR REPLACE PACKAGE OTHERSCHEMA.WEB_ORDER_ENTRY_PACKAGE AS

TYPE REF_CURSOR IS REF CURSOR;

PROCEDURE CLIENT_FLD(
   InWebUserId IN WEB_USER.WEB_USERID%TYPE,
   OutResults OUT REF_CURSOR);

END WEB_ORDER_ENTRY_PACKAGE;
/

CREATE OR REPLACE PACKAGE BODY OTHERSCHEMA.WEB_ORDER_ENTRY_PACKAGE AS

PROCEDURE Test(InWebUserId IN VARCHAR2, OutResults OUT REF_CURSOR) IS
BEGIN
OPEN OutResults FOR
SELECT CLIENTCODE CLIENT_CODE, DESCRIPTION CLIENT_NAME
    FROM CLIENT;
// Select anything from dual would be fine here
END Test;

END WEB_ORDER_ENTRY_PACKAGE;
/

Actual result:
--------------
After executing the procedure, and then the cursor, upon using oci_fetch_array() I receive this warning:

"PHP Warning:  oci_fetch_array(): ORA-24338: statement handle not executed"

As detailed above, if the DB Link is omitted from the synonym definition (which implies the two schemas are on the same database) then the repro code executes fine.