9.126 V$PQ_SLAVE

V$PQ_SLAVE lists statistics for each of the active parallel execution servers on an instance.

Column Datatype Description

SLAVE_NAME

VARCHAR2(4)

Name of the parallel execution server

STATUS

VARCHAR2(4)

Current status of the parallel execution server:

  • BUSY

  • IDLE

SESSIONS

NUMBER

Number of sessions that have used this parallel execution server

IDLE_TIME_CUR

NUMBER

Amount of time spent idle while processing statements in the current session

BUSY_TIME_CUR

NUMBER

Amount of time spent busy while processing statements in the current session

CPU_SECS_CUR

NUMBER

Amount of CPU time spent on the current session

MSGS_SENT_CUR

NUMBER

Number of messages sent while processing statements for the current session

MSGS_RCVD_CUR

NUMBER

Number of messages received while processing statements for the current session

IDLE_TIME_TOTAL

NUMBER

Total amount of time this query server has been idle

BUSY_TIME_TOTAL

NUMBER

Total amount of time this query server has been active

CPU_SECS_TOTAL

NUMBER

Total amount of CPU time this query server has used to process statements

MSGS_SENT_TOTAL

NUMBER

Total number of messages this query server has sent

MSGS_RCVD_TOTAL

NUMBER

Total number of messages this query server has received

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