ID: 44560
User updated by: jarismar_silva at adplabs dot com dot br
-Summary: Apache crashes with PDO_OCI and both persistent and
non-persistent connectios
Reported By: jarismar_silva at adplabs dot com dot br
Status: Open
Bug Type: PDO related
Operating System: Windows XP SP2
PHP Version: 5.2.6RC3
New Comment:
You can more reproduce this error by killing the persistent
connection.
First you need to discovering the SID and Serial# from the persistent
connection in order to kill it:
This SQL retrieve SID and SERIAL# :
select * from (
select
nvl(ses.USERNAME,'ORACLE PROC') username,
PROGRAM,
MACHINE,
ses.status status,
PROCESS pid,
ses.SID SID,
SERIAL#
from v$session ses,
v$sess_io sio
where ses.SID = sio.SID
order by PHYSICAL_READS, ses.USERNAME
) where username = 'RPTDEV7'
order by machine, pid, sid
Then kill the session with
ALTER SYSTEM KILL SESSION '<SID>,<SERIAL#>';
Previous Comments:
------------------------------------------------------------------------
[2008-03-28 14:53:42] jarismar_silva at adplabs dot com dot br
Description:
------------
Sometimes our DBAs restart oracle without restarting the apache server,
due to this if apache has persistent connections, those connections are
in invalid state.
In this scenario trying to connect to oracle results in on of the
following errors:
ORA-00028: your session has been killed
ORA-01012: not logged on
ORA-03113 end-of-file on communication channel
I'm trying to handle this errors and skipping creating the persistent
connection and then creating a new non-persistent connection (see the
php snippet). I was in hope that doing this could force apache to free
the invalid persistent connection, but instead apache crashes (it seems
a problem freeing the statements).
Reproduce code:
---------------
try {
$oPDO = new PDO($sDSN, $sUserName, $sPassword,
array(PDO::ATTR_PERSISTENT => true));
print "Persistent connection created\n";
$oPDO->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
} catch (Exception $oE) {
echo "Error : ".$oE->getMessage()."\n";
$oPDO = new PDO($sDSN, $sUserName, $sPassword,
array(PDO::ATTR_PERSISTENT => false));
print "Non persistent connection created\n";
}
try {
$oStatement = $oPDO->prepare('Select 1+1 as test from dual');
var_dump($oStatement->execute());
var_dump($oStatement->fetchAll());
} catch (Exception $oE) {
echo "Error : ".$oE->getMessage()."\n";
}
$oPDO = null;
Expected result:
----------------
I expect either the system get ride of invalid persistent connections
or when one create a non-peristent connection it replaces the persistent
one if there is any.
Actual result:
--------------
Unhandled exception at 0x0087ac76 (php5ts.dll) in Apache.exe:
0xC0000005: Access violation reading location 0x002b5ffc.
> php5ts.dll!_zend_mm_free_int(_zend_mm_heap * heap=0x01ded100, void *
p=0x0005000c) Line 1960 C
php5ts.dll!_efree(void * ptr=0x00265ff8) Line 2293 + 0xb bytes C
php_pdo_oci.dll!oci_stmt_dtor(_pdo_stmt_t * stmt=0x00000000, void * *
* tsrm_ls=0x01debeb0) Line 90 + 0x3 bytes C
php_pdo.dll!free_statement(_pdo_stmt_t * stmt=0x02b9ad48, void * * *
tsrm_ls=0x01debeb0) Line 2355 + 0x8 bytes C
php_pdo.dll!php_pdo_stmt_delref(_pdo_stmt_t * stmt=0x02b9ad48, void *
* * tsrm_ls=0x01debeb0) Line 2397 + 0xb bytes C
php_pdo.dll!pdo_dbstmt_free_storage(_pdo_stmt_t * stmt=0x02b9ad48,
void * * * tsrm_ls=0x01debeb0) Line 2402 + 0xf bytes C
php5ts.dll!zend_objects_store_del_ref_by_handle(unsigned int
handle=2, void * * * tsrm_ls=0x01debeb0) Line 206 + 0x11 bytes C
php5ts.dll!zend_objects_store_del_ref(_zval_struct *
zobject=0x02b9ab00, void * * * tsrm_ls=0x01debeb0) Line 169 C
php5ts.dll!_zval_dtor_func(_zval_struct * zvalue=0x02b9ab00) Line
60 C
php5ts.dll!_zval_ptr_dtor(_zval_struct * * zval_ptr=0x02b9aefc) Line
414 + 0xc bytes C
php5ts.dll!zend_hash_apply_deleter(_hashtable * ht=0x01e22460, bucket
* p=0x02b9aef0) Line 611 + 0x6 bytes C
php5ts.dll!zend_hash_reverse_apply(_hashtable * ht=0x01e22460, int
(void *, void * * *)* apply_func=0x00907bb0, void * * *
tsrm_ls=0x01debeb0) Line 760 + 0xb bytes C
php5ts.dll!shutdown_destructors(void * * * tsrm_ls=0x01debeb0) Line
212 C
php5ts.dll!zend_call_destructors(void * * * tsrm_ls=0x01debeb0) Line
845 + 0x6 bytes C
php5ts.dll!php_request_shutdown(void * dummy=0x00000000) Line 1445 +
0x6 bytes C
php5apache2.dll!php_apache_request_dtor(request_rec * r=0x01bc6de0,
void * * * tsrm_ls=0x01debeb0) Line 468 + 0x8 bytes C
php5apache2.dll!php_handler(request_rec * r=0x01bc6de0) Line 641 +
0x7 bytes C
libhttpd.dll!6ff01575()
[Frames below may be incorrect and/or missing, no symbols loaded for
libhttpd.dll]
libhttpd.dll!6ff019fd()
libhttpd.dll!6ff0e15c()
libhttpd.dll!6ff09966()
libhttpd.dll!6ff04275()
libhttpd.dll!6ff044f2()
libhttpd.dll!6ff1c3b8()
msvcr71.dll!7c36b381()
ntdll.dll!7c91849f()
msvcr71.dll!7c3638e2()
kernel32.dll!7c80b683()
ntdll.dll!7c91849f()
------------------------------------------------------------------------
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Edit this bug report at http://bugs.php.net/?id=44560&edit=1
