DBA_HIST_IOSTAT_FILETYPE_NAME displays historical I/O statistics for file type names. This view contains snapshots of V$IOSTAT_FILE.
| Column | Datatype | NULL | Description | 
|---|---|---|---|
| DBID | NUMBER | NOT NULL | Database ID for the snapshot | 
| FILETYPE_ID | NUMBER | NOT NULL | Type of file (for example, log file, data file, and so on) | 
| FILETYPE_NAME | VARCHAR2(30) | NOT NULL | Name of the file, in the case of a data file or temp file. For all other files, a corresponding string to be displayed (for example, ARCHIVELOG). |