Correct OCCI connection String

Question

Hi,
I trying to write some small application on a 32bit Centos machine, with g++ and OCCI, I have correctly setup the library linking and have some sample code running alright, however I don't seem to be able to get a correct connection string to connect to a remote 11g database (11.0.2.3).
below are codes that I have tried.
[code]
#include <occi.h>
#include <iostream>
using namespace std;
using namespace oracle::occi;
int main(){
        string userName = "user";
        string password = "STRONGPW";
        string connectString = "";
        try{
                Environment *env = Environment::createEnvironment();
                        cout << "before create connection\n";
                        Connection *conn = env->createConnection(userName, password, connectString);
                Environment::terminateEnvironment(env);
        }catch(exception& e){
                cout << e.what();
[/code]
I have double confirmed the username and password, and whenever it goes the createConnection method, it will throw exception error,
I am compiling and running as root, I have tried all sort of connection strings
connectionString = "";
ORA-12546: TNS:permission denied
connectString = "TCP://192.168.1.2:1522";  // I did also try "tcp://192.168.1.2:1522"
ORA-12154: TNS:could not resolve the connect identifier specified     (192.168.1.2 being host machine, 1522 being listening port)
connectString = "User Id=user;Password=STRONGPW;Data Source=ORCL222";
ORA-12154: TNS:could not resolve the connect identifier specified    (ORCL222 being name specified in  $ORACLE_HOME/network/admin/tnsnames.ora)
connectString = "DataSource="  // I did try "ORCL222="
"  (DESCRIPTION ="
"       (ADDRESS=(PROTOCOL = TCP)(HOST = 192.168.1.2)(PORT = 1522))"
"    (CONNECT_DATA="
"      (SERVICE_NAME = ORCL2)"
"      (SERVER = DEDICATED)"
ORA-12154: TNS:could not resolve the connect identifier specified    (ORCL2 being ORACLE service name)
did I miss anything? or is there any spacing in the connection string that I might have did wrongly?

Answer 1

Hi Darryl,
Thanks for trying to answer, I found the answer in
Oracle® C++ Call Interface Programmer's Guide 10g Release 1 (10.1)
the correct connection string seems to be
192.168.1.2:1522/ORCL2 for my case