python ctypes + OCCI error - c++

Question

I trying to test using python ctypes with a small C++ program that uses Oracle OCCI to see if it's possible to use such a combination. It compiles to an .so library file ok but I am getting a nice linker error when I try to use it from Python, I think:
#include <string>
#include <iostream>
#include "occi.h"
using namespace std;
using namespace oracle::occi;
static string userName = "****";
static string passWord = "****";
static string connectString = "****";
class Account{
public:
bool updateAccount(){
bool updated = false;
try{
Environment *env = Environment::createEnvironment(Environment::DEFAULT);
Connection *conn = env->createConnection(userName,passWord,connectString);
Statement *stmt = conn->createStatement("select * from test");
ResultSet *rs = stmt->executeQuery();
while(rs->next()){
cout<<rs->getString(1)<<endl;
cout<<rs->getString(2)<<endl;
cout<<rs->getString(3)<<endl;
}
conn->terminateStatement(stmt);
env->terminateConnection(conn);
Environment::terminateEnvironment(env);
}catch(...){
}
return updated;
}
};
extern "C" {
Account* Account_new(){ return new Account(); }
bool Account_updateAccount(Account* account){ account->updateAccount(); }
}
#!/usr/local/bin/python2.6
import ctypes
import os
lib = ctypes.cdll.LoadLibrary(os.getcwd()+'/occi.so')
class Account(object):
def __init__(self):
self.obj = lib.Account_new()
def updateAccount(self):
lib.Account_updateAccount(self.obj)
if __name__ == "__main__":
a = Account()
b = a.updateAccount()
print str(b)
Error when I run ctest.py:
Traceback (most recent call last):
File "./ctest.py", line 7, in <module>
lib = ctypes.cdll.LoadLibrary('/oracle/ctypes/occi.so')
File "/usr/local/lib/python2.6/ctypes/__init__.py", line 431, in LoadLibrary
return self._dlltype(name)
File "/usr/local/lib/python2.6/ctypes/__init__.py", line 353, in __init__
self._handle = _dlopen(self._name, mode)
OSError: ld.so.1: python2.6: fatal: relocation error: file /oracle/ctypes/occi.so: symbol _ZN6oracle4occi11Environment17createEnvironmentENS1_4ModeEPvPFS3_S3_jEPFS3_S3_S3_jEPFvS3_S3_E: referenced symbol not found
Any ideas, could it be an issue with using the Oracle Instant Client libs. I have seen weird issues with these in the past when trying to compile other 3rd party libraries against them ?
Thanks