oracle锁表怎么解锁,oracle表锁定解锁
Oracle 锁表查询 和解锁表
查询锁表
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select object_name, machine, s.sid, s.serial#
from v$locked_object l, dba_objects o, v$session s
where l.object_id = o.object_id
and l.session_id = s.sid;
解表
ALTER system kill session 'sid, serial#';
ALTER system kill session '256, 34034';
oracle查询资源占用,锁表解锁
1. 先通过top命令查看产用资源较多的spid号
2.查询当前耗时的会话ID,用户名,sqlID等:
select sid,serial#,machine,username,program,sql_hash_value,sql_id,
to_char(logon_time,'yyyy/mm/dd hh24:mi:ss') as login_time from v$session
where paddr in (select addr from v$process where spid in ('5648612','256523'));
3. 如果上一步sql_id或者 hash_value不为空,则可用v$sqlarea查出当前正在使用的sql
select sql_text
from v$sqltext_with_newlines
where hash_value = hash_value
order by piece;
也可直接使用:
select a.*,b.SQL_TEXT from (
select sid,serial#,machine,username,program,sql_hash_value,sql_id,
to_char(logon_time,'yyyy/mm/dd hh24:mi:ss') as login_time from v$session
where paddr in (select addr from v$process where spid in ('23226'))
) a,v$sql b
where a.sql_id = b.SQL_ID(+)
4.kill占用大资源的session
Alter system kill session 'SID,SERIAL#'
解锁:
1.查询哪些对象被锁:
select object_name,machine,s.sid,s.serial#
from v$locked_object l,dba_objects o ,v$session s
where l.object_id = o.object_id and l.session_id=s.sid;
2.下面的语句用来杀死一个进程:
alter system kill session '524,1095'; (其中24,111分别是上面查询出的sid,serial#)
3.再一次查询目前锁定的对象,若发现以上方法不能解除锁定的表,则用以下方法:
3.1 执行下面的语句获得进程(线程)号:
select spid, osuser, s.program
from v$session s,v$process p
where s.paddr=p.addr and s.sid=524 (524是上面的sid)
查询Oracle锁表语句以及解锁语句
查询锁表:SELECT l.session_id sid,
s.serial#,
l.locked_mode,
l.oracle_username,
l.os_user_name,
s.machine,
s.terminal,
o.object_name,
s.logon_time FROM v$locked_object l,
all_objects o,
v$session s WHERE l.object_id = o.object_id ANd l.session_id = s.sid ORDER BY sid,
s.serial#;
解锁:ALTER system KILL session 'sid,serial#';
查询锁住原因:SELECT b.sid oracleID,b.username 登录Oracle用户名,b.serial#,spid 操作系统ID,paddr,
sql_text 正在执行的SQL,b.machine 计算机名 FROM v$process a, v$session b, v$sqlarea c
WHERE a.addr = b.paddr AND b.sql_hash_value = c.hash_value and b.USERNAME='FKPHIS24';
oracle 表被锁住 怎么解锁
一般先查询并找到被锁定的表,解锁代码如下:
--释放SESSION SQL:
--alter system kill session 'sid, serial#';
ALTER system kill session '23, 1647';
新闻标题:oracle锁表怎么解锁,oracle表锁定解锁
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