DBA_HIST_BUFFERED_QUEUES displays historical information about all buffered queues available for the instance.
| Column | Datatype | NULL | Description | 
|---|---|---|---|
| SNAP_ID | NUMBER | NOT NULL | Unique snapshot ID | 
| DBID | NUMBER | NOT NULL | Database ID for the snapshot | 
| INSTANCE_NUMBER | NUMBER | NOT NULL | Instance number for the snapshot | 
| QUEUE_SCHEMA | VARCHAR2(30) | NOT NULL | Owner of the queue | 
| QUEUE_NAME | VARCHAR2(30) | NOT NULL | Name of the queue | 
| STARTUP_TIME | DATE | NOT NULL | Startup time of the instance | 
| QUEUE_ID | NUMBER | NOT NULL | ID of the queue | 
| NUM_MSGS | NUMBER | Total number of outstanding messages currently enqueued in the buffered queue for the subscriber (includes the count of the messages overflowed to disk) | |
| SPILL_MSGS | NUMBER | Current number of overflow messages spilled to disk from the buffered queue | |
| CNUM_MSGS | NUMBER | Cumulative total number of messages enqueued into the buffered queue since the buffered queue was created. | |
| CSPILL_MSGS | NUMBER | Cumulative total number of overflow messages spilled to disk from the buffered queue since the buffered queue was created |