Oracle 9i + NT4 + NTDLL.DLL

Hi there,

we have a sporadic crash in our applications after calling a C-DLL connecting itself to the database using ProC, doing some SELECT-stuff which work fine and then returning to the Main-Application. Right after the main application is doing a SELECT the application crashes with SQL error "TNS-Packet writer failure".

This happened after migrating our software to Oracle 9i on both Windows 2000 SP2 and Windows NT4 SP6. After applying SP3 for Windows 2000 the failure is gone there, but it remains on Windows NT4, but NOT reproducable!

We used Dependency Walker to track down the problem and found the following line in the profile-log:

"First chance exception 0xC0000008 (Invalid Handle) occurred in
"c:\winnt\system32\NTDLL.DLL" at address 0x77F76430 by thread 1."

This lead us to the assumption that the problem might be related to Microsoft's Q305227 "Heap memory corruption in NTDLL.DLL". The fact, that this issue has been fixed with SP3 for Windows 2000 supports this assumption, but perhaps anyone else experienced the same problems?

Many thanks in advance for any tip you can provide! Received on Thu Jan 30 2003 - 07:14:46 CST