|  
 SID 
 | 
 
 NUMBER 
 | 
 
 The Oracle SID of the session doing the backup or restore 
 | 
|  
 SERIAL 
 | 
 
 NUMBER 
 | 
 
 The use count for the SID doing the backup or restore 
 | 
|  
 USE_COUNT 
 | 
 
 NUMBER 
 | 
 
 A counter that can be used to identify rows from different backup sets 
 | 
|  
 DEVICE_TYPE 
 | 
 
 VARCHAR2(17) 
 | 
 
 The device type where the file is located 
 | 
|  
 TYPE 
 | 
 
 VARCHAR2(9) 
 | 
 
 INPUT, OUTPUT, or AGGREGATE 
 | 
|  
 STATUS 
 | 
 
 VARCHAR2(11) 
 | 
 
 NOT STARTED, IN PROGRESS, or FINISHED 
 | 
|  
 FILENAME 
 | 
 
 VARCHAR2(513) 
 | 
 
 The name of the backup file being read or written 
 | 
|  
 SET_COUNT 
 | 
 
 NUMBER 
 | 
 
 The set count of the backup set being read or written 
 | 
|  
 SET_STAMP 
 | 
 
 NUMBER 
 | 
 
 The set stamp of the backup set being read or written 
 | 
|  
 BUFFER_SIZE 
 | 
 
 NUMBER 
 | 
 
 The size of the buffers being used to read/write this file, in bytes 
 | 
|  
 BUFFER_COUNT 
 | 
 
 NUMBER 
 | 
 
 The number of buffers being used to read/write this file 
 | 
|  
 TOTAL_BYTES 
 | 
 
 NUMBER 
 | 
 
 The total number of bytes that will be read or written for this file, if known. If not known, this column will be null 
 | 
|  
 OPEN_TIME 
 | 
 
 DATE 
 | 
 
 The time this file was opened. If TYPE='AGGREGATE', then this is the time that the first file in the aggregate was opened 
 | 
|  
 CLOSE_TIME 
 | 
 
 DATE 
 | 
 
 The time this file was closed. If TYPE='AGGREGATE', then this is the time that the last file in the aggregate was closed 
 | 
|  
 ELAPSED_TIME 
 | 
 
 NUMBER 
 | 
 
 The time, in 100ths of seconds, that the file was open 
 | 
|  
 MAXOPENFILES 
 | 
 
 NUMBER 
 | 
 
 The number of concurrently open DISK files. This value is only present in rows where TYPE='AGGREGATE'. 
 | 
|  
 BYTES 
 | 
 
 NUMBER 
 | 
 
 The number of bytes read or written so far 
 | 
|  
 EFFECTIVE_BYTES_PER_SECOND 
 | 
 
 NUMBER 
 | 
 
 The I/O rate that was achieved with this device during this backup 
 | 
|  
 IO_COUNT 
 | 
 
 NUMBER 
 | 
 
 The number of I/Os that were performed to this file 
 | 
|  
 READY 
 | 
 
 NUMBER 
 | 
 
 The number of asynchronous requests for which a buffer was immediately ready for use 
 | 
|  
 SHORT_WAITS 
 | 
 
 NUMBER 
 | 
 
 The number of times that a buffer was not immediately available, but a buffer became available after doing a non-blocking poll for I/O completion 
 | 
|  
 SHORT_WAIT_TIME_TOTAL 
 | 
 
 NUMBER 
 | 
 
 The total time, in 100ths of seconds, taken by non-blocking polls for I/O completion 
 | 
|  
 SHORT_WAIT_TIME_MAX 
 | 
 
 NUMBER 
 | 
 
 The maximum time taken for a non-blocking poll for I/O completion, in 100ths of seconds 
 | 
|  
 LONG_WAITS 
 | 
 
 NUMBER 
 | 
 
 The number of times that a buffer was not immediately available, and only became available after a blocking wait was issued 
 | 
|  
 LONG_WAIT_TIME_TOTAL 
 | 
 
 NUMBER 
 | 
 
 The total time, in 100ths of seconds, taken by blocking waits for I/O completion 
 | 
|  
 LONG_WAIT_TIME_MAX 
 | 
 
 NUMBER 
 | 
 
 The maximum time taken for a blocking wait for I/O completion, in 100ths of seconds 
 |