PHP has encountered an Access Violation - W2K Server/PHP 5.1.1/SAPRFC 1.4.1

Question

Hi Everybody,
we are running a business critical PHP application. Currently it runs on a W2K Server with PHP Version 4.2.3 and SAPRFC 1.2.1. We had to switch to a new hardware and want also to use a actual version of PHP / SAPRFC. So we installed PHP 5.1.1 and SAPRFC 1.4.1.
When I call a special RFC enabled Function Module I can reproduce to create the error Message "PHP has encountered an Access Violation". We had this problem on the old server also but only once in a month. On the new system we got the error reproducable after this special function module.
In the server logs I've found this message:
The HTTP server encountered an unhandled exception while processing the ISAPI Application '
wam!WAM_REQ_CORE::GetSz(unsigned long)const  + 0x51
php5isapi!HttpExtensionProc + 0x6B3
wam!DllCanUnloadNow + 0x636
wam!DllCanUnloadNow + 0x20C
w3svc!HTTP_HEADERS::FindValue(char const *,unsigned long *) + 0xE2
w3svc!STR::Copy(char const *,unsigned long) + 0xC71
w3svc!STR::Copy(char const *,unsigned long) + 0xB49
w3svc!STR::Copy(char const *,unsigned long) + 0x9A2
w3svc!CLIENT_CONN::OnSessionStartup(int *,void *,unsigned long,int) + 0x642
w3svc!HTTP_HEADERS::Reset(void) + 0x1CA
w3svc!STR::Copy(char const *,unsigned long) + 0x16EF
ISATQ!CDirMonitor::RemoveEntry(class CDirMonitorEntry *) + 0x13A
+ 0xECA5F1B3
I've already tried  <a href="http://www.eventid.net/display.asp?eventid=204&eventno=731&source=WAM&phase=1">setting b</a> from <a href="http://bugs.php.net/bug.php?id=31731&edit=1">HTTP server encountered unhandled exception while processing ISAPI Application</a>.
Any suggestions?
Regards
Gregor

Answer 1

Hi Gregor,
If you need to remain on windows it is an option, however you would then need to setup a different authentication for your SSO. The only Apache on windows I run is a test machine. Hopefully someone here has experience with Apache in a productive environment.
Did you come across this link http://bugs.php.net/bug.php?id=35568 in your search for problems? This discusses a problem in PHP 5.1.1 that did not exist in 4.X . There is a fix in 5.1.2 . However I could not see a description of the cause, just a pointer to the fix.
It may not help your productive environment, but may lead you in the right direction.
Cheers
John