FILE# | 
NUMBER | 
Number of the file | 
PHYRDS | 
NUMBER | 
Number of physical reads done | 
PHYWRTS | 
NUMBER | 
Number of times DBWR is required to write | 
PHYBLKRD | 
NUMBER | 
Number of physical blocks read | 
PHYBLKWRT | 
NUMBER | 
Number of blocks written to disk, which may be the same as PHYWRTS if all writes are single blocks | 
SINGLEBLKRDS | 
NUMBER | 
Number of single block reads | 
READTIM | 
NUMBER | 
Time (in hundredths of a second) spent doing reads if the TIMED_STATISTICS parameter is true; 0 if false | 
WRITETIM | 
NUMBER | 
Time (in hundredths of a second) spent doing writes if the TIMED_STATISTICS parameter is true; 0 if false | 
SINGLEBLKRDTIM | 
NUMBER | 
Cumulative single block read time (in hundredths of a second) | 
AVGIOTIM | 
NUMBER | 
Average time (in hundredths of a second) spent on I/O, if the TIMED_STATISTICS parameter is true; 0 if false | 
LSTIOTIM | 
NUMBER | 
Time (in hundredths of a second) spent doing the last I/O, if the TIMED_STATISTICS parameter is true; 0 if false | 
MINIOTIM | 
NUMBER | 
Minimum time (in hundredths of a second) spent on a single I/O, if the TIMED_STATISTICS parameter is true; 0 if false | 
MAXIORTM | 
NUMBER | 
Maximum time (in hundredths of a second) spent doing a single read, if the TIMED_STATISTICS parameter is true; 0 if false | 
MAXIOWTM | 
NUMBER | 
Maximum time (in hundredths of a second) spent doing a single write, if the TIMED_STATISTICS parameter is true; 0 if false |