This event is used to wait for disk file operations (for example, open, close, seek, and resize). It is also used for miscellaneous I/O operations such as block dumps and password file accesses.
Wait Time: The wait time is the actual time it takes to do the I/O
| Parameter | Description |
|---|---|
| FileOperation | Type of file operation |
| fileno | File identification number |
| filetype | Type of file (for example, log file, data file, and so on) |
Oracle Database Internal Mechanism 