Many thanks to those who helped me yesterday. I already used them
positively.

May I ask one more question ?
The application is calling another BDE application through the ExecuteFile
function. I managed to do the following:

Main Application
.
.
.
Session.Close;
 ExecuteFile('AAA.exe'  ,'', BinLocation ,SW_SHOW);

up to here everything is OK. The first application closes its session and
the second one assigns its own session in its own netdir.

The next statement...
Session.Open;

does not however open the tables in the main application.

Any suggestions?

Thank you in advance

Best Regards

Lefteris