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 
CON_ID 
NUMBER 
The ID of the container to which the data pertains. Possible values include:

0 : This value is used for rows containing data that pertain to the entire CDB. This value is also used for rows in nonCDBs.

1 : This value is used for rows containing data that pertain to only the root

n: Where n is the applicable container ID for the rows containing data
