重复执行上一条语句
最近更新时间: 2024-10-17 17:10:00
postgres=# select count(1) from pg_stat_activity where state!='idle';
count
-------
1
(1 row)
postgres=# \watch 1
Fri 28 Sep 2018 04:58:51 PM CST (every 1s)
count
-------
1
(1 row)
Fri 28 Sep 2018 04:58:52 PM CST (every 1s)
count
-------
1
(1 row)
上面的语句为每次自动查询活跃的进程数，相当于临时监控作用。