| Oracle® Database Reference 11g Release 2 (11.2) Part Number E25513-03  | 
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PDF · Mobi · ePub | 
DBA_HIST_WAITSTAT displays historical block contention statistics. This view contains snapshots of V$WAITSTAT.
| Column | Datatype | NULL | Description | 
|---|---|---|---|
SNAP_ID | 
NUMBER | 
Unique snapshot ID | |
DBID | 
NUMBER | 
Database ID for the snapshot | |
INSTANCE_NUMBER | 
NUMBER | 
Instance number for the snapshot | |
CLASS | 
VARCHAR2(18) | 
Class of the block | |
WAIT_COUNT | 
NUMBER | 
Number of waits by the OPERATION for this CLASS of block | |
TIME | 
NUMBER | 
Sum of all wait times for all the waits by the OPERATION for this CLASS of block |