Re: DB connection pool. How to pass handle?

I'm new to C++ and I need to create DB connection pool.

Here is the class that I have:

class uudb
{
public:
 uudb();
 ~uudb();

 sptk::CODBCDatabase handle;
 void connect(std::string login, std::string password, int server,
std::string sessionid);
 void disconnect();
};

uudb::uudb() : handle("DSN=PostgreSQL;UID=serge;PWD=;DATABASE=uu")
{
 cout<<"\nOpening DB ...\n";
 handle.open();
}

uudb::~uudb()
{
 cout<<"\nClosing DB ...\n";
 handle.close();
}

void uudb::connect(string login, string password, int server, string
sessionid)
{

 try {
   CQuery loginQuery(&handle,"select
login(:login,:password,:server)");
   loginQuery.param("login") = login;
   loginQuery.param("password") = password;
   loginQuery.param("server") = server; //
lexical_cast<string>(server);
   loginQuery.exec();
   cout<<"\nConnected\n";
 }
 catch (exception& e) {
   cout<<"\nError: " <<e.what();
 }

}

void uudb::disconnect()
{

 try {
   CQuery logoutQuery(&handle,"select logout()");
   logoutQuery.exec();
   cout<<"\nDisconnected\n";
 }
 catch (exception& e) {
   cout<<"\nError: " <<e.what();
 }

}

I need to pass this handle to other classes, so they can use it to
communicate with DB, but I have no idea how to do it.

Your help is appreciated.