47           3

    select b.username,b.sid,b.serial#,logon_time

    from v$locked_object a,v$session b

    where a.session_id = b.sid order by b.logon_time;

    USERNAME                              SID    SERIAL# LOGON_TIME

    ------------------------------ ---------- ---------- -----------

    WSSB_RTACCESS                          39       1178 2006-5-22 1

    WSSB_RTACCESS                          29       5497 2006-5-22 1

    杀会话

    alter system kill session 'sid,serial#';

    e.g

    alter system kill session '29,5497';

    如果有ora-00031错误，则在后面加immediate;

    alter system kill session '29,5497' immediate;

    -------------

    １.查哪个过程被锁

    查V$DB_OBJECT_CACHE视图:

    SELECT * FROM V$DB_OBJECT_CACHE WHERE OWNER='过程的所属用户' AND CLOCKS!='0';

    2. 查是哪一个SID,通过SID可知道是哪个SESSION.

    查V$ACCESS视图:

    SELECT * FROM V$ACCESS WHERE OWNER='过程的所属用户' AND NAME='刚才查到的过程名';

    3. 查出SID和SERIAL#

    查V$SESSION视图:

    SELECT SID,SERIAL#,PADDR FROM V$SESSION WHERE SID='刚才查到的SID'

    查V$PROCESS视图:

    SELECT SPID FROM V$PROCESS WHERE ADDR='刚才查到的PADDR';

    4. 杀进程

    (1).先杀ORACLE进程:

    ALTER SYSTEM KILL SESSION '查出的SID,查出的SERIAL#';

    (2).再杀操作系统进程:

    KILL -9 刚才查出的SPID

    或

    ORAKILL 刚才查出的SID 刚才查出的SPID

    ------------------

    oracle的死锁

    查询数据库死锁

    select t2.username||'   '||t2.sid||'   '||t2.serial#||'   '||t2.logon_time||'   '||t3.sql_text

    from v$locked_object t1,v$session t2,v$sqltext t3

    where t1.session_id=t2.sid

    and t2.sql_address=t3.address

    order by t2.logon_time;

    查询出来的结果就是有死锁的session了