V$PX_SESSTAT

V$PX_SESSTAT contains information about the sessions running parallel execution.

Column Datatype Description
SADDR RAW(4 | 8) Session address
SID NUMBER Session identifier
SERIAL# NUMBER Session serial number
QCSID NUMBER Session identifier of the parallel coordinator
QCSERIAL# NUMBER Session serial number of the parallel coordinator
QCINST_ID NUMBER Instance number on which the parallel coordinator is running
SERVER_GROUP NUMBER The logical group of PX servers to which this cluster database process belongs
SERVER_SET NUMBER The logical set of PX servers that this cluster database process belongs to. A single PX server group will have at most two PX server sets.
SERVER# NUMBER The logical number of the cluster database process within a PX server set
DEGREE NUMBER The degree of parallelism being used by the PX server set
REQ_DEGREE NUMBER The degree of parallelism that was requested by the user when the statement was issued and before any resource, multiuser, or load balancing reductions
STATISTIC# NUMBER Statistic number
VALUE NUMBER Statistic value
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