OCCI problem - Please urgent guidance needed

Question

I'm using VC++ 6.0 and Oracle 10g, and want to connect to the Oracle database XE, code is getting compile successfully, but i'm getting runtime exception on executing the application... [its normal command line application]
conn = env->createConnection ("admin", "admin","//localhost:1521/XE"); - rutime exception on this statement
Here is the code snippet:
#pragma comment(lib, "oraocci10.lib")
#define WIN32COMMON
#include <stdlib.h>
#include <occi.h>
#include <iostream>
using namespace oracle::occi;
using namespace std;
class lobarray
private:
Environment *env;
Connection *conn;
public:
lobarray (string user, string passwd, string db)
     cout <<"connecting DB" << endl;
env = Environment::createEnvironment();
     cout <<"ENV set" << endl;
conn = env->createConnection ("admin", "admin","//<ip_address>:1521/XE");     //Runtime exception...
     cout <<"conneted " << endl;
As, First time ever i'm working on VC++, so i have no clue how to address this.. although i read about OCCI, header file, libs.. and able to complie program..
I do catching SQLException in code.. where i'm creating the object......
Please provide any hit/Guidance/ or links to refer...
This program will be running from client machine and will connect to Oracle server (diff machine) over the network.
Please let me know, how do i achieve this?

Answer 1

Hi,
you cannot use the occi 10g with VC6++ !
When using precompiled C++ library, you have to use the same compiler than the one used to compile the C++ dll.
Oracle 10g provided occi dll to be used with VC7 and VC7.1
It's not possible to use them the VC6 C++ runtime.
That' why OCCI is alway a pain... Because Oracle only provides precompiled shared libs, you have to use supported compilers. and VC6 C++ runtime is not.
You have to upgrade your VC version or use the Windows SDK that includes free C++ compiler and C++ runtime.