Oracle 根据SQL_ID查询并杀会话,清空执行计划缓冲池2018年09月06日 10:31:40 小学生汤米 阅读数:4731. 查询最近五分钟内最高频次SQL,查看event select t.SQL_OPNAME,t.SQL_ID,count(*) from v$active_session_history t where t.SAMPLE_TIME>to_timestamp('20180906-09:55:00','YYYYMMDD-hh24:mi:ss') and t.SESSIO
for update模拟锁表 --session 1 SQL> select * from tt for update; --session 2 SQL> update tt set id=1 where id=2; 按用户查询锁的情况 set line 300 col OBJECT_NAME format a30 col event format a30 col type format a10 col object_name format a15 col object_type format
select object_name as 对象名称,s.sid,s.serial#,p.spid as 系统进程号 from v$locked_object l , dba_objects o , v$session s , v$process p where l.object_id=o.object_id and l.session_id=s.sid and s.paddr=p.addr; alter system kill session '1039,21219'; select sid,
模拟开发人员需求,可以杀死其它阻塞自己的会话1.能有查询阻塞会话确认的权限SQL> grant select on v_$session to testa;SQL> grant select on v_$sql to testa;SQL> select sid,serial#,username,sql_id,status,event,BLOCKING_INSTANCE,BLOCKING_SESSION from v$session where username='TESTA'; SID
授权其他数据库用户kill session kill session权限 CREATE OR REPLACE PROCEDURE P_KILL_SESSION(P_USER IN VARCHAR2, P_SID IN VARCHAR2, P_SERIAL IN VARCHAR2) AS V_SQL VARCHAR2(32767); BEGIN SELECT 'ALTER SYSTEM KILL SESSION ''' || SID || ',' || SERIAL# || '''' INTO V
当某个数据库用户在数据库中插入.更新.删除一个表的数据,或者增加一个表的主键时或者表的索引时,常常会出现ora-00054:resource busy and acquire with nowait specified这样的错误. 主要是因为有事务正在执行(或者事务已经被锁),所有导致执行不成功. 1.用dba权限的用户查看数据库都有哪些锁 select t2.username,t2.sid,t2.serial#,t2.logon_time from v$locked_object t1,v$s