Kill session and process

Question

Hi,
There are many answers in this forum related with my question but could not complete answer.
I have problem with process count in db. Firstly I killed sessions
alter system kill session 'xxx,yyyy';
and then queried v$session. The status of sessions were changed as killed but in v$process it showed that the count of process same as before.
So I decided to create profile and set idle time.
select * from v$resource_limit
RESOURCE_NAME     CURRENT_UTILIZATION     MAX_UTILIZATION     INITIAL_ALLOCATION     LIMIT_VALUE
processes     459     466            500            500
sessions     459     467            555            555
select * from dba_profiles
PROFILE     RESOURCE_NAME     RESOURCE_TYPE     LIMIT
myUser_PROFILE     IDLE_TIME     KERNEL     2880 (2 days)
select username,profile from dba_users
USERNAME    PROFILE
myUser      myUser_PROFILE
select
       p.spid,
       s.username,
       s.sid,
       s.serial#,
       to_char(s.logon_time, 'Dy dd Mon HH24:MI:SS') start_time,
       s.status
  from V$PROCESS p, V$SESSION s
where s.paddr = p.addr
   and s.username is not null;
SPID     USERNAME     SID     SERIAL#     START_TIME     STATUS
3880     myUser     181     102     Wed 24 Mar 19:37:10     SNIPED
5135     myUser     71     190     Wed 24 Mar 20:41:00     SNIPED
5259     myUser     422     3,794     Wed 24 Mar 20:47:31     SNIPED
5666     myUser     189     197     Wed 24 Mar 21:15:35     SNIPED
32109     myUser     421     3,746     Thu 25 Mar 21:57:07     SNIPED
32371     myUser     344     10,518     Thu 25 Mar 22:16:31     SNIPED
32395     myUser     65     28     Thu 25 Mar 22:18:01     SNIPED
32518     myUser     35     205     Thu 25 Mar 22:23:37     SNIPED
19703     myUser     40     18     Fri 26 Mar 21:03:24     SNIPED
19870     myUser     242     106     Fri 26 Mar 21:12:05     SNIPED
19965     myUser     212     11,276     Fri 26 Mar 21:19:10     SNIPED
23054     myUser     215     535     Sat 27 Mar 00:08:01     SNIPED
23668     myUser     17     6,237     Sat 27 Mar 00:48:25     SNIPED
26200     myUser     218     1,323     Sat 27 Mar 03:44:07     SNIPED
18830     myUser     388     256     Sun 28 Mar 00:40:10     INACTIVE
18894     myUser     177     461     Sun 28 Mar 00:41:35     INACTIVE
18954     myUser     357     36     Sun 28 Mar 00:45:09     INACTIVE
19124     myUser     52     325     Sun 28 Mar 00:53:38     INACTIVE
14697     myUser     448     2     Mon 29 Mar 00:06:05     INACTIVE
14741     myUser     447     6     Mon 29 Mar 00:07:53     INACTIVE
14786     myUser     449     3     Mon 29 Mar 00:09:26     INACTIVE
8678     SYS     461     10,762     Mon 29 Mar 10:45:00     ACTIVEI think pmon should kill process related with killed session but it does not.
Please explain me how it happens,what should I do.
After while I will again get error as 'ORA-00020: maximum number of processes (%s) exceeded'
Thanks in advance
Edited by: catastrophe on Mar 28, 2010 11:24 PM

Answer 1

Hi,
When you are killing an oracle session which is created by some unix shell script you need to follow some other steps to kill that session.
When you kill a session using sid and serial# it kills only oracle session but does not frees unix process associated with that session.
To perform it correctly pls do the following.
SQL> ;
  1  select s.sid, s.serial#, p.pid, p.spid, p.username
  2  from   v$session s, v$process p
  3  where  s.paddr=p.addr
  4* and    s.username='SCOTT'
SQL> /
       SID    SERIAL#        PID SPID         USERNAME
       530      32662         40 14258        oracle
       462      47581         49 17344        kuldeep
$ ptree 17344
4974  /usr/sbin/inetd -s
  10598 in.telnetd
    10603 login -p -d /dev/pts/1 -h 172.24.242.183
      10671 -ksh
        14814 sqlplus /
          17344 oracleffdt01 (DESCRIPTION=(LOCAL=YES)(ADDRESS=(PROTOCOL=beq)))Kill deepest process in ptree output i.e. 17344
Edited by: [email protected] on Mar 29, 2010 4:25 PM