pg_stat_activity 是postgrsql 实例维护的一个进程相关的视图,是实时变化的。 1、pg_stat_activity表(9.6 版本之后 pg_stat_activity 视图的 waiting 字段被 wait_event_type 和 wait_event 字段取代,这两个字段分别代表等待事件的类型、等待事件名称) 使用SELECT * FROM pg_stat_activity 可以看到这个表的所有...
这个查询将返回所有非空闲状态的连接信息,包括进程ID(pid)、用户名(usename)、应用程序名称(application_name)、客户端地址(client_addr)、客户端端口(client_port)、事务开始时间(xact_start)、查询开始时间(query_start)、状态改变时间(state_change)、等待事件类型(wait_event_type)、等待事件(wait_event)、当前状...
selectpid, queryfrompg_stat_activitywheredatname='postgres'andwait_event_type ='Lock'; 17. 删除锁进程 https://blog.csdn.net/weixin_55282974/article/details/129365322selectpg_cancel_backend(‘进程pid’);该语句可以把锁住的进程杀掉。 18. 查看表记录数 selectcount(*)fromtable1; 可用此命令分时间...
{ title: '等待事件类型', field: 'wait_event_type', sortable: true }, { title: '等待事件', field: 'wait_event', sortable: true }, { title: '查询开始时间', field: 'query_start', sortable: true }, { title: '后端开始时间', field: 'backend_start', sortable: true }, { title:...
select T.PID, T.STATE, T.QUERY, T.WAIT_EVENT_TYPE, T.WAIT_EVENT, T.QUERY_START from PG_STAT_ACTIVITY T where --T.DATNAME = '数据库名' --and T.WAIT_EVENT_TYPE = 'Lock';-- 通过pid解锁对应的ACTIVITY select PG_CANCEL_BACKEND(55195);查询包含空间索引的表...
运行：select pid,now()-query_start as "执行时间",wait_event_type,wait_event,query from pg_stat_activity;八、释放空闲连接 执行命令：SELECT pg_terminate_backend(pid) FROM pg_stat_activity WHERE datname = 'market' AND pid != pg_backend_pid() AND state in ('idle');九、清除...
SQL> SELECT EVENT,SUM(DECODE(WAIT_TIME, 0 , 0 , 1 )) "PREV",SUM(DECODE(WAIT_TIME, 0 , 1 , 0 )) "CURR",COUNT(*) "TOT" FROM V$SESSION_WAIT GROUP BY EVENT ORDER BY 4 ; 2. 回滚段的争用情况 SQL> SELECT NAME, WAITS, GETS, WAITS/GETS "RATIO" FROM V$ROLLSTAT A, V$ROLLNAM...
Wait Event TypesWait Event TypeDescription Activity The server process is idle. This event type indicates a process waiting for activity in its main processing loop. wait_event will identify the specific wait point; see Table 28.5. BufferPin The server process is waiting for...
-T,--threadsShow per-thread event counters -U,--hide-unresolvedOnly display entries resolvedtoa symbol. -s,--sort=Sort by key(s): pid, comm, dso, symbol, parent. -g [type,min],--call-graphDisplay call chains usingtypeandmin percent threshold.typecan be either: ...
Show per-thread event counters -U, --hide-unresolved Only display entries resolved to a symbol. -s, --sort= Sort by key(s): pid, comm, dso, symbol, parent. -g [type,min], --call-graph Display call chains using type and min percent threshold. type can be either: ...