V$PERSISTENT_QMN_CACHE

V$PERSISTENT_QMN_CACHE displays detailed information and statistics about the background activities for all queue tables in the system. There is one row per queue table. The rows are deleted when the database (or instance in an Oracle RAC environment) restarts.


Column Datatype Description

QUEUE_TABLE_ID

NUMBER

Queue table object ID

TYPE

VARCHAR2(32)

Type of the queue table's queue monitor cache

STATUS

NUMBER

Status of the queue table's queue monitor cache

NEXT_SERVICE_TIME

TIMESTAMP(3) WITH TIME ZONE

Time when the queue table should be serviced by QMON servers

WINDOW_END_TIME

TIMESTAMP(3) WITH TIME ZONE

Time manager activity period for non-owner queue table operations

TOTAL_RUNS

NUMBER

Total number of times this queue table is served

TOTAL_LATENCY

NUMBER

Cumulative latency in serving the queue table (in hundredths of a second)

TOTAL_ELAPSED_TIME

NUMBER

Total time spent in processing this queue table (in seconds)

TOTAL_CPU_TIME

NUMBER

Cumulative CPU time for serving the queue table (in hundredths of a second)

TMGR_ROWS_PROCESSED

NUMBER

Number of time manager entries processed

TMGR_ELAPSED_TIME

NUMBER

Cumulative time for time management activities (in hundredths of a second)

TMGR_CPU_TIME

NUMBER

Cumulative CPU time for time management activities (in hundredths of a second)

LAST_TMGR_PROCESSING_TIME

TIMESTAMP(3) WITH TIME ZONE

Last timer manager processing time

DEQLOG_ROWS_PROCESSED

NUMBER

Number of dequeue log entries processed

DEQLOG_PROCESSING_ELAPSED_TIME

NUMBER

Total time for processing dequeue log entries (in hundredths of a second)

DEQLOG_PROCESSING_CPU_TIME

NUMBER

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

LAST_DEQLOG_PROCESSING_TIME

TIMESTAMP(3) WITH TIME ZONE

Last dequeue log processing time

DEQUEUE_INDEX_BLOCKS_FREED

NUMBER

Number of dequeue index blocks freed

HISTORY_INDEX_BLOCKS_FREED

NUMBER

Number of history index blocks freed

TIME_INDEX_BLOCKS_FREED

NUMBER

Number of time manager index blocks freed

INDEX_CLEANUP_COUNT

NUMBER

Number of times index block cleanup was attempted

INDEX_CLEANUP_ELAPSED_TIME

NUMBER

Total time for index block cleanup (in hundredths of a second)

INDEX_CLEANUP_CPU_TIME

NUMBER

Total CPU time for index block cleanup (in hundredths of a second)

LAST_INDEX_CLEANUP_TIME

TIMESTAMP(3) WITH TIME ZONE

Last index block cleanup time

CON_ID

NUMBER

The ID of the container to which the data pertains. 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