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Oracle® Database Reference
11g Release 1 (11.1)

B28320-03
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V$PQ_SYSSTAT

V$PQ_SYSSTAT lists system statistics for parallel queries. After you have run a query or DML operation, you can use the information derived from V$PQ_SYSSTAT to view the number of slave processes used, and other information for the system.

Column Datatype Description
STATISTIC VARCHAR2(30) Name of the statistic:
  • Servers Busy - Number of currently busy servers on this instance

  • Servers Idle - Number of currently idle servers on this instance

  • Servers Highwater - Number of active servers on this instance that have partaken in >= 1 operation so far

  • Server Sessions - Total number of operations executed in all servers on this instance

  • Servers Started - Total number of servers started on this instance

  • Servers Shutdown - Total number of servers shutdown on this instance

  • Servers Cleaned Up - Total number of servers on this instance cleaned up due to process death

  • Queries Initiated - Total number of parallel queries initiated on this instance

  • DDL Initiated - Total number of parallel DDL operations that were initiated

  • DML Initiated - Total number of parallel DML operations that were initiated

  • DFO Trees - Total number of DFO trees executed on this instance

  • Local Msgs Sent - Total number of local (intra-instance) messages sent on this instance

  • Distr Msgs Sent - Total number of remote (inter-instance) messages sent on this instance

  • Local Msgs Recv'd - Total number of remote (inter-instance) messages received on this instance

  • Distr Msgs Recv'd - Total number of remote (inter-instance) messages received on this instance

VALUE NUMBER Value of the statistic