When in the Schema Browser's Data tab, columns of data type BINARY_DOUBLE don’t display in the data grid. Looking at the View/Edit Schema Browser Query (second icon on the left next to the Filter icon) the BINARY_DOUBLE columns are missing in the default query. If I add the missing columns to the query, then they display in the data grid, however, when I move to another table and then come back to the table with the query that was changed then the modified query is gone and I am back to the default one that’s missing the BINARY_DOUBLE columns.
Use the View/Edit schema browser query window to add the column to the query that populates the data grid.
Waiting for a fix to be released in a future version of Toad for Oracle.
This defect has been fixed in the Toad 11 beta version. You can download it from http://toadfororacle.com/beta.jspa.