> Is there any way of reading uncommitted data of another transactions?

No way but read about "No record version" (See in IB6 original document
pack).


This is a part of my transaction component (C++Builder/IBX):

Params->Clear();

switch (FTransIsolation)
{
case tiSnapshot :
Params->Add("concurrency");
break;

case tiReadCommitted :
Params->Add("read_committed");
Params->Add("rec_version");
break;

case tiReadCommitted_NoVer :
Params->Add("read_committed");
Params->Add("no_rec_version");
break;

case tiTableStability :
Params->Add("consistency");
break;
}


if (FTransWait)
{
Params->Add("wait");
}
else
{
Params->Add("nowait");
}


if (TransReadOnly)
{
Params->Add("read");
}
else
{
Params->Add("write");
}


eMeL