8.125 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
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