Hi,

I am currently trying to make a small portfolio managing application using Qt4.3.3 + mysql-5.1. I wanted to use Mysql embedded rather then full server. I recompiled the qt mysql driver for using mysql embedded as explained in the Qt manual (qassistant) and the driver compiled successfully. I installed the newly compiled driver at its appropriate location. Now when I start my application, I get the following error......

080201 14:10:06 InnoDB: Operating system error number 13 in a file operation. InnoDB: The error means mysqld does not have the access rights to InnoDB: the directory. InnoDB: File name /var/lib/mysql/ibdata1 InnoDB: File operation call: 'open'. InnoDB: Cannot continue operation.

Actually I don't know how to use this driver.... or rather I should say that how to use the embedded MySQL system. Am I supposed to copy the any files within my application project directory. I tried to search on the net, but couldn't find much to continue. In my main.cpp (where I initialise the mysql server connection), I commented the connection parameters that are used when using the mysql server.

My main.cpp looks like this.....

///////////main.cpp/////////////////

#include <mainmenu.h> #include <QSqlDatabase> #include <QSqlError> #include <QMessageBox>

int main(int argc, char *argv[]){ QApplication app(argc, argv); QSqlDatabase mdb = QSqlDatabase::addDatabase("QMYSQL"); /*mdb.setHostName("localhost"); mdb.setDatabaseName("portfolio"); mdb.setUserName("rajen"); mdb.setPassword("somePassword");*/ if (mdb.open()){ QString success = "Success!!"; QString con = "Connection Successful."; QMessageBox *mbox = new QMessageBox(QMessageBox::Information, success, con, QMessageBox::Ok); mbox->exec(); } else { QMessageBox::critical(0, QObject::tr("Database Error"), mdb.lastError().text()); } MainMenu *main = new MainMenu(&mdb); main->show(); return app.exec(); }

///////////main.cpp/////////////////

Any guidance or some links on the net would be helpful. Regards, Rajen.