select * from pg_stat_statements order by shared_blks_hit+shared_blks_read desc limit 5; 10、获取数据库当前的回滚事务数以及死锁数 select datname,xact_rollback,deadlocks from pg_stat_database 11、查询访问指定表的慢查询 select * from pg_stat_activity where query ilike '%<table_name>%' and...
select * from pg_stat_statements order by shared_blks_hit+shared_blks_read desc limit 5; 10、获取数据库当前的回滚事务数以及死锁数 select datname,xact_rollback,deadlocks from pg_stat_database 11、查询访问指定表的慢查询 select * from pg_stat_activity where query ilike '%%' and query_start ...
pg阻塞 + pg_top -- select * from pg_stat_activity where pid= pid; = postgresql 运维常用脚本 杀掉进程 - kill 1.查下超过10 s的查询语句 select * From pg_stat_activity where query_start<=now()- interval'10 sec' and state not in ('idle') and pid<>pg_backend_pid() and query ilik...
1.查下超过10 s的查询语句 select*From pg_stat_activitywherequery_start<=now()- interval'10 sec'and state notin('idle') and pid<>pg_backend_pid() and query ilike'select%'order by query_start ; 2. 超过10s的查询会被干掉 selectpg_terminate_backend(pid) From pg_stat_activitywherequery_st...
union select 1,2,pass,4,5,6 from admin 属于布尔盲注的 第二种注入方式 判断一下数据库中的表,网址后加上:and (select count(*) from admin) <>0返回正常,说明存在admin表。如果返回错误,可将admin改为username、manager等常用表名继续猜解。
blocking_activity.queryAScurrent_statement_in_blocking_processFROMsys_catalog.sys_locks blocked_locksJOINsys_catalog.sys_stat_activity blocked_activityONblocked_activity.pid=blocked_locks.pidJOINsys_catalog.sys_locks blocking_locksONblocking_locks.locktype=blocked_locks.locktypeANDblocking_locks.DATABASEIS...
语句形式为：Insert into Table2(field1,field2,…) select value1,value2,… from Table1 ...
(3 rows) zdhdb=# select * from dbe_perf.global_replication_slots;node_name | slot_name | plugin | slot_type | datoid | database | active | x_min | catalog_xmin | restart_lsn | dummy_standby---+---+---+---+---+---+---+---+---+---+---dn_6001_6002 | dn_6003 ...
select*frompg_stat_activitywherepidin(selectpidfrompg_locks aawhereaa.relationin(selectoidfrompg_classwhererelname='sbtest1')); image.png 解决方案 问题就是这条SQL引起的, 所以决定kill这个会话 数据库层kill (失败) 代码语言:sql 复制 selectpg_cancel_backend('pid');-- 返回t, 但sql还在执行select...
在数据库的日常使用中,难免会遇到慢 SQL,遇到慢 SQL 本身并不可怕,困难之处在于如何识别慢 SQL 并对其优化,使它不至于拖慢整个系统的性能,避免危害到日常业务的正常进行。 上期我们讲了索引原因、系统配置和资源竞争导致的慢 SQL,今天我们继续分析和总结。