| 
 
FILE_NUMBER   | 
 
NUMBER   | 
 
Number of the datafile   | 
| 
 
FREQUENCY   | 
 
NUMBER   | 
 
The frequency   | 
| 
 
X_2_NULL   | 
 
NUMBER   | 
 
Number of lock conversions from Exclusive-to-NULL for all blocks in the file   | 
| 
 
X_2_NULL_FORCED _WRITE   | 
 
NUMBER   | 
 
Number of forced writes that occur for blocks of the specified file due to Exclusive-to-NULL conversions   | 
| 
 
X_2_NULL_FORCED _STALE   | 
 
NUMBER   | 
 
Number of times a block in the file was made STALE due to Exclusive-to-NULL conversions   | 
| 
 
X_2_S   | 
 
NUMBER   | 
 
Number of lock conversions from Exclusive-to-Shared for all blocks in the file   | 
| 
 
X_2_S_FORCED_WRITE   | 
 
NUMBER   | 
 
Number of forced writes that occur for blocks of the specified file due to Exclusive-to-Shared conversions   | 
| 
 
X_2_SSX   | 
 
NUMBER   | 
 
Number of lock conversions from Exclusive-to-Sub Shared Exclusive for all blocks in the file   | 
| 
 
X_2_SSX_FORCED _WRITE   | 
 
NUMBER   | 
 
Number of forced writes that occur for blocks of the specified file due to Exclusive-to-Sub Shared Exclusive conversions   | 
| 
 
S_2_NULL   | 
 
NUMBER   | 
 
Number of lock conversions from Shared-to-NULL for all blocks in the file   | 
| 
 
S_2_NULL_FORCED _STALE   | 
 
NUMBER   | 
 
Number of times a block in the file was made STALE due to Shared-to-NULL conversions   | 
| 
 
SS_2_NULL   | 
 
NUMBER   | 
 
Number of lock conversions from Sub Shared-to-NULL for all blocks in the file   | 
| 
 
WRB   | 
 
NUMBER   | 
 
Number of times the instance received a write single buffer cross instance call for this file   | 
| 
 
WRB_FORCED_WRITE   | 
 
NUMBER   | 
 
Number of blocks written due to write single buffer cross instance calls for this file   | 
| 
 
RBR   | 
 
NUMBER   | 
 
Number of times the instance received a reuse block range cross instance call for this file   | 
| 
 
RBR_FORCED_WRITE   | 
 
NUMBER   | 
 
Number of blocks written due to reuse block range cross instance calls for this file   | 
| 
 
RBR_FORCED_STALE   | 
 
NUMBER   | 
 
Number of times a block in this file was made STALE due to reuse block range cross instance calls   | 
| 
 
CBR   | 
 
NUMBER   | 
 
Number of times the instance received a checkpoint block range cross instance call for this file   | 
| 
 
CBR_FORCED_WRITE   | 
 
NUMBER   | 
 
Number of blocks in this file which were written due to checkpoint cross range cross instance calls   | 
| 
 
NULL_2_X   | 
 
NUMBER   | 
 
Number of lock conversions from NULL-to-Exclusive for all blocks of the specified file   | 
| 
 
S_2_X   | 
 
NUMBER   | 
 
Number of lock conversions from Shared-to-Exclusive for all blocks of the specified file   | 
| 
 
SSX_2_X   | 
 
NUMBER   | 
 
Number of lock conversions from Sub Shared Exclusive-to-Exclusive for all blocks of the specified file   | 
| 
 
NULL_2_S   | 
 
NUMBER   | 
 
Number of lock conversions from NULL-to-Shared for all blocks of the specified file   | 
| 
 
NULL_2_SS   | 
 
NUMBER   | 
 
Number of lock conversions from NULL-to-Sub Shared for all blocks of the specified file   | 
| 
 
OP_2_SS   | 
 
NUMBER   | 
 
Number of pcm locks ss locks opened. 0 in Oracle 8.1   |