如何杀死我所有的postgresql连接?
我试着耙db:下降，但我得到:
ERROR: database "database_name" is being accessed by other users
DETAIL: There are 1 other session(s) using the database.
我尝试过关闭我从ps -ef | grep postgres中看到的进程，但这也不起作用:
kill: kill 2358 failed: operation not permitted
当前回答
案例: 查询执行失败:
DROP TABLE dbo.t_tabelname
解决方案: a.显示查询状态活动如下:
SELECT * FROM pg_stat_activity ;
b.查找“查询”列包含的行:
'DROP TABLE dbo.t_tabelname'
c.在同一行中，获取“PID”列的值
example : 16409
d.执行以下脚本:
SELECT
pg_terminate_backend(25263)
FROM
pg_stat_activity
WHERE
-- don't kill my own connection!
25263 <> pg_backend_pid()
-- don't kill the connections to other databases
AND datname = 'database_name'
;
其他回答
我使用下面的rake任务来覆盖Rails drop_database方法。
lib / database.rake
require 'active_record/connection_adapters/postgresql_adapter'
module ActiveRecord
module ConnectionAdapters
class PostgreSQLAdapter < AbstractAdapter
def drop_database(name)
raise "Nah, I won't drop the production database" if Rails.env.production?
execute <<-SQL
UPDATE pg_catalog.pg_database
SET datallowconn=false WHERE datname='#{name}'
SQL
execute <<-SQL
SELECT pg_terminate_backend(pg_stat_activity.pid)
FROM pg_stat_activity
WHERE pg_stat_activity.datname = '#{name}';
SQL
execute "DROP DATABASE IF EXISTS #{quote_table_name(name)}"
end
end
end
end
编辑:这是Postgresql 9.2+
关于运行进程的所有信息:
SELECT *, pg_terminate_backend(pid)
FROM pg_stat_activity
WHERE pid <> pg_backend_pid()
AND datname = 'my_database_name';
也许只是重启postgres => sudo服务postgresql重启
打开PGadmin查看是否有任何查询页面打开，关闭所有查询页面，断开PostgresSQL服务器连接，重新连接，尝试删除/删除选项。这对我很有帮助。
SELECT
pg_terminate_backend(pid)
FROM
pg_stat_activity
WHERE
pid <> pg_backend_pid()
-- no need to kill connections to other databases
AND datname = current_database();
-- use current_database by opening right query tool
