OCCI 10.2.0.3.0 Patch 13 cause crash ntdll.dll on vista 32bit

Question

hi,
I ceated an application using VC++ 2005 and OCCI 10.2.0.3.0 (update patch 13). the application run smoothly on 2000/XP. But if it is run on vista (32bit, tested on several computer), it ocassionally creates crash (not always) when trying to connect to oracle server (also when trying to connect to non existance server, sometimes crash and sometimes successfully displaying time out message),
The crash message is as follows:
Problem Event Name:     APPCRASH
Application Name:     myapp.exe
Application Version:     0.0.0.0
Application Timestamp:     473ad65c
Fault Module Name:     ntdll.dll
Fault Module Version:     6.0.6000.16386
Fault Module Timestamp:     4549bdc9
Exception Code:     c0000005
Exception Offset:     0006278d
OS Version:     6.0.6000.2.0.0.256.6
Locale ID:     1041
Additional Information 1:     97d2
Additional Information 2:     aae4dc92551b959656fcd53b4bc6e928
Additional Information 3:     0701
Additional Information 4:     257a6a00f5b8f65db312588a0172a174
here's the code snippet:
try
     Environment* m_occiEnv;
     Connection* m_occiCon;
     m_occiEnv = Environment::createEnvironment();
     if (m_occiEnv != NULL)
          m_occiCon = m_occiEnv->createConnection(user, pass, constr);
          if (m_occiCon != NULL) return SUCCESS;
catch (SQLException ea)
     m_strLastErr = _T(ea.what());
     return FAILED;
I then tried to upgrade the OCCI using OCCI 11.1.0.7.0 (using the same source code). It also creates random crash but on OraOCIEI11.dll (not ntdll.dll) as follows:
Problem Event Name:     APPCRASH
Application Name:     myapp.exe
Application Version:     0.0.0.0
Application Timestamp:     494c1430
Fault Module Name:     OraOCIEI11.dll
Fault Module Version:     0.0.0.0
Fault Module Timestamp:     48e3389a
Exception Code:     c0000005
Exception Offset:     00103991
OS Version:     6.0.6000.2.0.0.256.6
Locale ID:     1041
Additional Information 1:     298d
Additional Information 2:     d9ff73d6b133e41e5ad025e8ab5a02eb
Additional Information 3:     3eb8
Additional Information 4:     aa3992fb7f26e9ad1e018c76d9dcdb5a
any suggestion?
thank you
Edited by: chn on Dec 19, 2008 3:19 AM

Answer 1

hi again,
I tried to change the createEnvironment into the following:
m_occiEnv = Environment::createEnvironment(Environment::THREADED_MUTEXED);
and somehow, using the latest OCCI 11.1.0.7.0 with the above code, the application seems running well. Tested around 40 times, haven't got any crashed.
When using the OCCI 10.2.0.30 patch 13 with the above code, the application occasionally is still crashed.