Tip: Although IBM strongly advises against direct modification of the DB2 tables, it is sometimes necessary. Back up relevant data before modifying the DB2 tables. Also, quiesce any system activity that might be active for the collection or storage group so the application does not receive errors if it attempts to access the collection data while changes are made.

LISTCAT ENTRIES('collection_name') ALL

There are two methods available to modify the default storage class and/or default management class associated with a given object collection.