How do you select / unselect or hide / unhide columns in the log in or connections screen of Toad for Oracle 10.0?
The right-click data grid | "Select Visible Columns" feature in Toad 9.7 has been replaced by the "Click Here to Show/Hide Columns" button in Toad 10.
Click the "small" icon or button called "Click Here to Show/Hide Columns". This button is located in the upper left corner of the connections history grid in the log-in screen. It is right next to the first column header, which is the "User" column by default.
After clicking the above-mentioned button, it will allow you to check / uncheck the boxes for the columns you want to display or hide.