Stored procedure vs sql performance

Question

i have a series of 4 selects. If i do them in my application code (C++) one after the other, it outperforms the same thing done in a stored procedure. I wonder how this is possible being that i save 3 round trips????

Answer 1

This is how i fetch and parse:
float proc(int iteration, bool printSwitch)
Statement * stmt;
ResultSet * res, * ref;
string num = "0522304471";
timeval start, finish, execute, result;
float diff, execution;
gettimeofday(&start, 0);
ResultSet * infoCursor, * numberCursor, * credentialsCursor;
gettimeofday(&start, 0);
for (int i = 0 ; i < iteration; i++)
try {
stmt = OracleConnect->createStatement("BEGIN getSubscriberInfo(:v1, :v2, :v3, :v4); END;");
stmt->setString(1, num);           // cellular number
stmt->registerOutParam(2, OCCICURSOR);     // subscriber info
stmt->registerOutParam(3, OCCICURSOR);     // list of subscriber numbers
stmt->registerOutParam(4, OCCICURSOR);     // list of subscriber credentials
stmt->executeUpdate();           // call the procedure
//     ------------------------------ examine subscriber info -----------------------------------
gettimeofday(&execute, 0);
infoCursor = stmt->getCursor(2);
infoCursor->next();
string firstName = infoCursor->getString(1);
string lastName = infoCursor->getString(2);
string title = infoCursor->getString(3);
string desc = infoCursor->getString(4);
string language = infoCursor->getString(5);
if (printSwitch) cout << firstName << " " << lastName << " " << title << " " << desc << " " << language << "\n\n" << endl;
stmt->closeResultSet(infoCursor);
//     ------------------------------ examine phone number list ---------------------------------
numberCursor = stmt->getCursor(3);
while (numberCursor->next())
string descr = numberCursor->getString(1) ;
string num = numberCursor->getString(2) ;
if (printSwitch) cout << descr << " = " << num << endl;
stmt->closeResultSet(numberCursor);
//     ------------------------------ examine credentials list ----------------------------------
credentialsCursor = stmt->getCursor(4);
while (credentialsCursor->next())
string app_id = credentialsCursor->getString(1);
string Username = credentialsCursor->getString(2);
string UserPassword = credentialsCursor->getString(3);
string UserSecret = credentialsCursor->getString(4);
string UserToken = credentialsCursor->getString(5);
string IsActive = credentialsCursor->getString(6);
string Status = credentialsCursor->getString(7);
if (printSwitch) cout << app_id << " " << Username << " " << UserPassword << " " << UserSecret << " " << UserToken << " " << IsActive << " " << Status << endl;
stmt->closeResultSet(credentialsCursor);
OracleConnect->terminateStatement(stmt);
catch(SQLException ex){
string errStr = "Exception thrown for CCISessionInfoOracle::GetSubscriberCredentials; Error Message = ";
errStr += ex.getMessage();
cout << errStr << endl;
gettimeofday(&finish, 0);
execution = (execute.tv_usec / 1000000.0 - start.tv_usec / 1000000.0) +
(execute.tv_sec - start.tv_sec);
diff = (finish.tv_usec / 1000000.0 - start.tv_usec / 1000000.0) +
(finish.tv_sec - start.tv_sec);
cout << "\n\n================ stored procedure =========================" << endl;
cout << start.tv_sec << "." << start.tv_usec << " " << execute.tv_sec << "." << execute.tv_usec << " == " << execution << endl;
cout << start.tv_sec << "." << start.tv_usec << " " << finish.tv_sec << "." << finish.tv_usec << " == " << diff << endl;
return diff;
}