To collect the data using the -preupgrade parameter, first issue the db2fodc -preupgrade command. Next, issue the db2support -preupgrade command to collect the data from the db2fodc -preupgrade command and store it in the db2support_preupgrade.zip archive file. If a post-upgrade problem that requires opening a problem management record (PMR) occurs, you can send the db2support_preupgrade.zip file to IBM technical support to make the troubleshooting process easier.
To diagnose a problem that occurred during an instance creation, you can use the -clp parameter by issuing the db2fodc -clp command. This command quickly collects environment and configuration related information and stores it in a new directory created under the current diagnostic path, or under a path that you specify. This information makes troubleshooting the instance creation problem easier.