Oracle中Kill session的研究

王朝mssql·作者佚名  2006-12-17
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Oracle中Kill session的研究

Oracle中Kill session的研究 Oracle中Kill session的研究

sid,serial#' ;

我们发现当一个session被kill掉以后,该session的paddr被修改,如果有多个session被kill,那么多个session

的paddr都被更改为相同的进程地址:

SADDR SID SERIAL# PADDR USERNAME STATUS

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

542E0E6C 11 314 542B70E8 EYGLE INACTIVE

542E5044 18 662 542B6D38 SYS ACTIVE

SQL> alter system kill session '11,314';

System altered.

SQL> select saddr,sid,serial#,paddr,username,status from v$session where username is not null;

SADDR SID SERIAL# PADDR USERNAME STATUS

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

542E0E6C 11 314 542D6BD4 EYGLE KILLED

542E5044 18 662 542B6D38 SYS ACTIVE

SQL> select saddr,sid,serial#,paddr,username,status from v$session where username is not null;

SADDR SID SERIAL# PADDR USERNAME STATUS

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

542E0E6C 11 314 542D6BD4 EYGLE KILLED

542E2AA4 14 397 542B7498 EQSP INACTIVE

542E5044 18 662 542B6D38 SYS ACTIVE

SQL> alter system kill session '14,397';

System altered.

SQL> select saddr,sid,serial#,paddr,username,status from v$session where username is not null;

SADDR SID SERIAL# PADDR USERNAME STATUS

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

542E0E6C 11 314 542D6BD4 EYGLE KILLED

542E2AA4 14 397 542D6BD4 EQSP KILLED

542E5044 18 662 542B6D38 SYS ACTIVE

SQL> SELECT s.username,s.status,

2 x.ADDR,x.KSLLAPSC,x.KSLLAPSN,x.KSLLASPO,x.KSLLID1R,x.KSLLRTYP,

3 decode(bitand (x.ksuprflg,2),0,null,1)

4 FROM x$ksupr x,v$session s

5 WHERE s.paddr(+)=x.addr

6 and bitand(ksspaflg,1)!=0;

USERNAME STATUS ADDR KSLLAPSC KSLLAPSN KSLLASPO KSLLID1R KS D

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

542B44A8 0 0 0

ACTIVE 542B4858 1 14 24069 0 1

ACTIVE 542B4C08 26 16 15901 0 1

ACTIVE 542B4FB8 7 46 24083 0 1

ACTIVE 542B5368 12 15 24081 0 1

ACTIVE 542B5718 15 46 24083 0 1

ACTIVE 542B5AC8 79 4 15923 0 1

ACTIVE 542B5E78 50 16 24085 0 1

ACTIVE 542B6228 754 15 24081 0 1

ACTIVE 542B65D8 1 14 24069 0 1

ACTIVE 542B6988 2 30 14571 0 1

USERNAME STATUS ADDR KSLLAPSC KSLLAPSN KSLLASPO KSLLID1R KS D

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

SYS ACTIVE 542B6D38 2 8 24071 0

542B70E8 1 15 24081 195 EV

542B7498 1 15 24081 195 EV

SYS INACTIVE 542B7848 0 0 0

SYS INACTIVE 542B7BF8 1 15 24081 195 EV

16 rows selected.

2 minus

3 select s.paddr from v$session s;

--------

542B70E8

542B7498

来清除该session.这被作为一次异常中断处理.

 
 
 
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