V$PQ_SYSSTAT

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

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

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