Reducing the size of your DB2 fix pack installation image

The db2iprune is a command line utility that removes the files associated with those features and languages based on an input file. The input file (.prn file) allows you to specify which features and languages you want to remove from the fix pack image. The result is a new, smaller DB2 fix pack image. Reducing the size of a fix pack image is also referred to as pruning the fix pack image.

Before installing a fix pack that has been pruned, you must ensure that the pruned fix pack image contains all the components that are in the DB2 copy. If you prune a component from the fix pack image that is part of the DB2 copy, the fix pack installation will fail. For example, if you installed a DB2 copy with the First Steps component, you must ensure that you have not pruned the First Steps component from that fix pack image.

However, the reverse is permitted. If you did not install a specific component from your DB2 copy, you can successfully install a DB2 fix pack image that includes that specific component. In this case, that component is ignored when the fix pack image is installed. For example, if you installed a DB2 copy without the First Steps component, you can install a DB2 fix pack image that includes the First Steps component.