Where are Filters definitions files for the Schema Browser saved to? What are the file locations?
Most setting are saved to the User Files folder located in either the application data directory (for 9.7 and newer) or the installation directory (for 9.6 and older).
Specifically, the file that holds saved filters info for the Schema Browser | Tables | Data (data grid) is in:
C:\Users\<your_user>\AppData\Roaming\Quest Software\Toad for Oracle\12.1\User Files\Databases\<DB_SERVER_NAME>\ (for 11.5 and newer)
C:\Documents and Settings\<your_user>\Application Data\Quest Software\Toad for Oracle\9.7\User Files\<DB_SERVER_NAME>\ (for 9.7, 10.x, 11.0)
Look for the file name called: