| SNAP_ID | NUMBER | NOT NULL | Unique snapshot ID | 
| DBID | NUMBER | NOT NULL | Database ID for the snapshot | 
| INSTANCE_NUMBER | NUMBER | NOT NULL | Instance number for the snapshot | 
| FILE# | NUMBER | NOT NULL | File identification number | 
| CREATION_CHANGE# | NUMBER | NOT NULL | Change number at which the tempfile was created | 
| FILENAME | VARCHAR2(513) | NOT NULL | Name of the tempfile | 
| TS# | NUMBER | NOT NULL | Tablespace number | 
| TSNAME | VARCHAR2(30) | NOT NULL | Name of the tablespace | 
| BLOCK_SIZE | NUMBER |  | Block size of the tempfile | 
| PHYRDS | NUMBER |  | Number of physical reads done | 
| PHYWRTS | NUMBER |  | Number of times DBWR is required to write | 
| SINGLEBLKRDS | NUMBER |  | Number of single block reads | 
| READTIM | NUMBER |  | Time (in hundredths of a second) spent doing reads if the TIMED_STATISTICSparameter istrue;0iffalse | 
| WRITETIM | NUMBER |  | Time (in hundredths of a second) spent doing writes if the TIMED_STATISTICSparameter istrue;0iffalse | 
| SINGLEBLKRDTIM | NUMBER |  | Cumulative single block read time (in hundredths of a second) | 
| PHYBLKRD | NUMBER |  | Number of physical blocks read | 
| PHYBLKWRT | NUMBER |  | Number of blocks written to disk, which may be the same as PHYWRTSif all writes are single blocks | 
| WAIT_COUNT | NUMBER |  | Wait Count | 
| TIME | NUMBER |  | Wait time |