The dbtest tool has a list-all --analyze option that generates the current status of all of the databases on your system, including all index databases. The table shows the type, entry count (i.e., the number of records in the dtabase), index status (TRUSTED to indicate that the indexes are up-to-date, or UNTRUSTED if the index needs rebuilding), the total data size for each key, the average data size for each key and the maximum data size for each key. Note also that any indexes that are in exploded format are listed on this table.