Error "Optional feature not implemented"

[cywong119]

I make use the DSN of Progress ODBC driver to connect to Progress Database in my Visual Basic Programm/Application.

Does anyone encounter such error message "Optional feature not implemented" When you issue a sql statement to progress database by using DSN of Progress ODBC. I checked that my sql statement has no problem. When I stop my progress server and restar it, this error does not promp anymore. As you know, it is not possible to shut down progress Database to solve a error in production environment.

Could anyone advise me?

Christine