disconnect command

[Toralf Kirsten]

Hi,
we are using db2 8.1 on Linux. I'd like to close all open connection at
a defined time point. Therfore I wrote a sql script including the command

disconnect all

or

release all

Unfortunately, a warning returns telling me that a database connection
doesn't exists. If I use the command

list applications

then I see a list of open connection.

Question: How can I close all these open connections?

Thanks, Toralf