4.293 DBA_HIST_BUFFERED_QUEUES

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(128)

NOT NULL

Owner of the queue

QUEUE_NAME

VARCHAR2(128)

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

EXPIRED_MSGS

NUMBER

Number of expired messages

OLDEST_MSGID

RAW(16)

Message ID of the oldest message

OLDEST_MSG_ENQTM

TIMESTAMP(3)

Enqueue time of the oldest message

QUEUE_STATE

VARCHAR2(25)

Indicates whether the queue is in recovery mode (QUEUE IS IN RECOVERY MODE) or not (NORMAL)

ELAPSED_ENQUEUE_TIME

NUMBER

Total time spent in enqueue (in hundredths of a second)

ELAPSED_DEQUEUE_TIME

NUMBER

Total time spent in dequeue (in hundredths of a second)

ELAPSED_TRANSFORMATION_TIME

NUMBER

Total time for evaluating transformations (in hundredths of a second)

ELAPSED_RULE_EVALUATION_TIME

NUMBER

Total time for rule evaluations (in hundredths of a second)

ENQUEUE_CPU_TIME

NUMBER

Total CPU time for enqueue (in hundredths of a second)

DEQUEUE_CPU_TIME

NUMBER

Total CPU time for dequeue (in hundredths of a second)

LAST_ENQUEUE_TIME

TIMESTAMP(3)

Last message enqueue time

LAST_DEQUEUE_TIME

TIMESTAMP(3)

Last message dequeue time

CON_DBID

NUMBER

The database ID of the PDB for the sampled session

CON_ID

NUMBER

The ID of the container that CON_DBID identifies. 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 non-CDBs.

  • 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