Toad
From Wikireedia
See Also Toad License
Toad is used for the development and administration of the Oracle and SQL databases. Toad can view the Oracle Dictionary, tables, indexes, stored procedures, and do various other tasks, through multi-tabbed browsers.
Toad has been used since 2005 at WNA to interrogate IFS database tables and development of Crystal XI and Clickbase reports. The underyling table structure in IFS is difficult to follow and many of the table labels do not correspond that actual database fields. Toad has been critical for us to short cut the trial and error and develop reports more quickly