OCCI-getString error

Question

The following is a small console program written with Visual C++
6.0 sp 4.
The program has a crash when it tries to destruct the
string variable fodt in the while loop.
Is this a known bug or is there an error in the code ?
Bertil Reppen
#include "stdafx.h"
#include <iostream>
//#include <string.h>
#include <occi.h>
using namespace std;
using namespace oracle::occi;
int main(int argc, char* argv[])
     const string username = "BERTIL";
     const string password = "REPPXX";
     const string url = "aoye.apintdom.no";
Environment *env = Environment::createEnvironment (
Environment::DEFAULT);
try
          Connection *conn = env->createConnection
(username, password, url);
          string sqlQuery = "SELECT pasientnr1,to_char
(FODSELSDATO,'dd-mm-yyyy') FROM pasient_nr";
          Statement *stmt = conn->createStatement
(sqlQuery);
          ResultSet *rs = stmt->executeQuery ();
          while (rs->next ())
               long pasno = rs->getInt(1);
               string fodt = rs->getString(2);
          stmt->closeResultSet (rs);
          conn->terminateStatement (stmt);
          env->terminateConnection (conn);
catch (SQLException ea)
cout << ea.what();
          catch (exception &excp)
     cout << excp.what() << endl;
Environment::terminateEnvironment (env);
     return 0;

Answer 1

Israel,
Most of these errors do indeed arise from missing/wrong
compilation flags/defines. Check out OCCI samples and
the "make.bat" files in your %ORACLE_HOME%\rdbms\demo directory
for the correct flags, includes, and libraries. Here is an
example,
:occimake
cl -GX -DWIN32COMMON -I. -I%ORACLE_HOME%\oci\include -I. -D_DLL -
D_MT %1.cpp /link /LIBPATH:%ORACLE_HOME%\oci\lib\msvc oci.lib
msvcrt.lib msvcprt.lib oraocci9.lib /nod:libc
Regards,
Geoff
the problem also occurs on VC 6.0 without any service pack.
pay attention that the following expression:
typeid(rs->getString(1)
leads to a compiler internal error (getXXX other than string
works just fine !!!).
this, along with some other testings i've conducted might
indicate that oraocci9.lib has been compiled with stl (or just
string) which differs from the version supplied with msvc.
it also can result from missing/wrong compilation flags/defines.
i'm still working on this.
if anyone finds the answer PLEASE contact me !!!
regards,
Israel Kalush