问题描述
有没有办法提交Postgres中处于空闲状态的事务?
如果我们使用idle_in_transaction_session_timeout会杀死并回滚事务,但是有什么方法可以提交和完成会话,我看不到任何被PID阻止的东西,我使用的是postgre10。 还是有什么办法可以阻止这些会话?所有这些似乎都是应用程序中孤立过程的结果。
APPNEW=# SELECT datname
APPNEW-#,pid
APPNEW-#,usename
APPNEW-#,wait_event_type
APPNEW-#,wait_event
APPNEW-#,backend_start
APPNEW-#,state
APPNEW-#,pg_blocking_pids(pid) AS blocked_by
APPNEW-#,query
APPNEW-# FROM pg_stat_activity
APPNEW-# WHERE wait_event IS NOT NULL
APPNEW-# order by backend_start;
datname | pid | usename | wait_event_type | wait_event | backend_start | state | blocked_by | query
---------+-------+-------------+-----------------+---------------------+-------------------------------+---------------------+------------+--------------------------------------------------
APPNEW | 4227 | appnew | Client | ClientRead | 2020-07-26 14:28:26.956884+12 | idle | {} | BEGIN;commit
APPNEW | 4305 | appnew | Client | ClientRead | 2020-07-26 14:28:35.955987+12 | idle | {} | BEGIN;commit
APPNEW | 4314 | appnew | Client | ClientRead | 2020-07-26 14:28:36.002783+12 | idle | {} | commit
APPNEW | 4323 | appnew | Client | ClientRead | 2020-07-26 14:28:36.046023+12 | idle | {} | BEGIN;commit
APPNEW | 4332 | appnew | Client | ClientRead | 2020-07-26 14:28:36.088676+12 | idle | {} | commit
APPNEW | 4341 | appnew | Client | ClientRead | 2020-07-26 14:28:36.137323+12 | idle | {} | BEGIN;commit
APPNEW | 4350 | appnew | Client | ClientRead | 2020-07-26 14:28:36.185843+12 | idle | {} | commit
APPNEW | 4359 | appnew | Client | ClientRead | 2020-07-26 14:28:36.227245+12 | idle | {} | BEGIN;commit
APPNEW | 4368 | appnew | Client | ClientRead | 2020-07-26 14:28:36.288329+12 | idle | {} | commit
APPNEW | 4377 | appnew | Client | ClientRead | 2020-07-26 14:28:36.337534+12 | idle | {} | commit
APPNEW | 4386 | appnew | Client | ClientRead | 2020-07-26 14:28:36.402352+12 | idle | {} | commit
APPNEW | 4395 | appnew | Client | ClientRead | 2020-07-26 14:28:36.439634+12 | idle | {} | commit
APPNEW | 4404 | appnew | Client | ClientRead | 2020-07-26 14:28:36.481263+12 | idle | {} | commit
.
.
(240 rows)
解决方法
那些是“空闲”会话,而不是“交易”。
空闲会话没有可以(或需要)提交的未决事务。
您无需执行任何操作
,'ClientRead'表示它们被阻止,等待客户端发送另一个命令。它没有在做什么。如果它们在交易中,则该状态将被称为“交易中的空闲”,而不仅仅是“空闲”。您无法让他们提交,因为没有什么可以提交。