Help Center/Data Warehouse Service/Standard Data Warehouse (9.1.0.x)/GaussDB(DWS) System Catalogs and Views/System Views/PG_POOLER_STATUS
Updated on 2025-06-12 GMT+08:00
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PG_POOLER_STATUS

PG_POOLER_STATUS displays the cache connection status in the pooler. PG_POOLER_STATUS can only query on the CN, and displays the connection cache information about the pooler module.

Table 1 PG_POOLER_STATUS columns

Column

Type

Description

database

Text

Database name

user_name

Text

Username

tid

Bigint

ID of the thread used for the connection to the CN

node_oid

Bigint

OID of the node connected

node_name

Name

Name of the node connected

in_use

boolean

Whether the connection is in use. The options are:

  • t (true): The connection is in use.
  • f (false): The connection is not in use.

fdsock

Bigint

Peer socket

remote_pid

Bigint

Peer thread ID

session_params

Text

GUC session parameter delivered by the connection

Example

View information about the connection pool pooler:

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select database,user_name,node_name,in_use,count(*) from pg_pooler_status group by 1, 2, 3 ,4 order by 5 desc limit 50;
 database | user_name |  node_name   | in_use | count
----------+-----------+--------------+--------+-------
 mydbdemo | user3     | cn_5001      | f      |     2
 mydbdemo | user3     | dn_6005_6006 | t      |     2
 mydbdemo | user3     | dn_6001_6002 | t      |     2
 mydbdemo | user3     | dn_6003_6004 | f      |     2
 mydbdemo | user3     | dn_6003_6004 | t      |     2
 mydbdemo | user3     | dn_6005_6006 | f      |     2
 mydbdemo | user3     | dn_6001_6002 | f      |     2
 mydbdemo | user3     | cn_5002      | f      |     2
 gaussdb  | user3     | dn_6003_6004 | f      |     1
 mydbdemo | user3     | cn_5001      | t      |     1
 music    | user2     | dn_6003_6004 | f      |     1
 music    | user2     | dn_6005_6006 | f      |     1
 gaussdb  | user1     | dn_6005_6006 | f      |     1
(13 rows)
Parent Topic: System Views