If any DB2® processes are running when the DB2 setup command is issued, the installation cannot occur.
You must stop the DB2 processes so that the installation can proceed. You must exercise extreme caution when you stop active DB2 processes because the termination of a DB2 process can cause the loss of data. The following describes how to stop these processes.
To lessen the risk of data loss, it is recommended that you issue the db2stop command for each instance and that you close any applications accessing DB2 data.
For a response file installation, you can use either of the following methods to stop any active DB2 processes. If you specify either of these options, the active DB2 processes are stopped before the installation proceeds.