QDB2 driver not loaded

[Sibyx]

Hi,
I compiled driver for IBM DB2 with msvc 2010, binaries (qsqldb24.dll and qsqldb2d4.dll) I copied to C:\Development\QtSDK\Desktop\Qt\4.8.1\msvc2010\plugins\sqldrivers . Now I have application where I'm using QDB2 driver:
@IBMConn::IBMConn(QString host, QString port, QString user, QString password, QString database)
{
conn = QSqlDatabase::addDatabase("QDB2");
conn.setHostName(host);
conn.setDatabaseName(database);
conn.setUserName(user);
conn.setPassword(password);
if (!port.isNull()) {
conn.setPort(port.toInt());
}
if (!conn.open()) {
appLogger->Log(Logger::LOG_DRIVER,QString("Error: %1").arg(conn.lastError().text()));
}
else {
appLogger->Log(Logger::LOG_DRIVER, "IBM DB2 driver inicialized");
appLogger->Log(Logger::LOG_DRIVER, "Connected to " + host);
}
}@
In this project I use msvc 2010 compiler (same as before) and when I run my app, output is:
@QSqlDatabase: QDB2 driver not loaded
QSqlDatabase: available drivers: QIBASE QSQLITE QMYSQL3 QMYSQL QOCI8 QOCI QODBC3 QODBC@
I don't understand why my plugin isn't loaded.

[Hostel]

I don't use DB2 but for example plugin for PostgreSQL requires a dll for connecting to db. Maybe your plugin can't load dll for db2. Use a Dependency Walker to check for missing dll for QDB2 plugin.

[Sibyx]

I use Depency Walker and I found these depencies:

• db2app.dll
• db2cli.dll
• db2dascmn.dll
• db2g11n.dll
• db2genreg.dll
• db2install.dll
• db2licm.dll
• db2locale.dll
• db2osse.dll
• db2osse_db3.dll
• db2sdbin.dll
• db2sys.dll
• db2trcapi.dll
• db2wint.dll
• gpsvc.dll
• IEShims.dll
• sysntfy.dll
  Now, my driver is loaded but I have next problem:
  @Starting C:\Users\magia\Qt\DatabaseExporter\debug\DatabaseExporter.exe...
  QDB2Driver::open: Unable to allocate environment Error:
  C:\Users\magia\Qt\DatabaseExporter\debug\DatabaseExporter.exe exited with code 0@

[Hostel]

@
QDB2Driver::open: Unable to allocate environment
@
This warning is in db2 plugin source. Are you sure that connect data is correct? Check a values of host, port, password etc. Can you connect to db from other tool on this values?

Maybe there are another dependencies in dlls - check all of dlls for another dependencies by Dependency Walker:
@
db2app.dll
db2cli.dll
db2dascmn.dll
db2g11n.dll
db2genreg.dll
db2install.dll
db2licm.dll
db2locale.dll
db2osse.dll
db2osse_db3.dll
db2sdbin.dll
db2sys.dll
db2trcapi.dll
db2wint.dll
gpsvc.dll
IEShims.dll
sysntfy.dll
@

[Sibyx]

I check all dependecies and I check my connect data too. All is fine, I try to connect do DB localy etc. but without any success. I try other machines with installed DB2 or not, I disabled firewall too. I don't know where is mistake