8.150 V$CPOOL_STATS

V$CPOOL_STATS displays information about the Database Resident Connection Pool statistics for an instance.

Column Datatype Description

POOL_NAME

VARCHAR2(1024)

Name of the Database Resident Connection Pool

NUM_OPEN_SERVERS

NUMBER

Total number of busy and free servers in the pool (including the authentication servers)

NUM_BUSY_SERVERS

NUMBER

Total number of busy servers in the pool (not including the authentication servers)

NUM_AUTH_SERVERS

NUMBER

Number of authentication servers in the pool

NUM_REQUESTS

NUMBER

Number of client requests

NUM_HITS

NUMBER

Total number of times client requests found matching pooled servers in the pool

NUM_MISSES

NUMBER

Total number of times client requests could not find a matching pooled server in the pool

NUM_WAITS

NUMBER

Total number of client requests that had to wait due to non-availability of free pooled servers

WAIT_TIME

NUMBER

Reserved for future use

CLIENT_REQ_TIMEOUTS

NUMBER

Reserved for future use

NUM_AUTHENTICATIONS

NUMBER

Total number of authentications of clients done by the pool

NUM_PURGED

NUMBER

Total number of sessions purged by the pool

HISTORIC_MAX

NUMBER

Maximum size that the pool has ever reached

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

Note:

This view returns data only when queried from a CDB root. When queried from a PDB, this view returns 0 rows.