AUTOMATICALLY KILL INACTIVE SESSIONS

Question

Hi all. we are using oracle 8.1.6 on windows-2000 with 2gb ram. we facing
ora-12500 listner failed to start a dedicated server.
error and for this we made certain changes. we also added a parameter in sqlnet.ora at server side sqlnet.expire_time=10.. for automatically killing inactive sessions but it did not helped and many sessions remain in v$session. i wana know what should we do to kill inactive sessions. because i think when the sessions reach more than 300 then we face problem of listner failed. thanks for u'r valueable comments in advance as well.
best wishes
muhammad mohsin chattha

Answer 1

Hi Nicolas, what you say is correct, but, unless the user try to do something (and receives an error),
those sessions will show up as SNIPED in V$SESSION, and never go away.
We can create a procedure to kill these sessions, something like this :  1  CREATE OR REPLACE PROCEDURE Kill_Sessions   IS
  2      Stmt           VARCHAR2(200);
  3      V_Sid          VARCHAR2(30);
  4      V_Serial       VARCHAR2(30);
  5      V_Username     VARCHAR2(30);
  6      CURSOR pri IS
  7      SELECT Sid, Serial#, Username
  8      FROM V$Session
  9      WHERE Username Is Not Null
10      And Username not like 'SYS%'
11      And Status = 'SNIPED';
12  BEGIN
13      FOR usr in pri LOOP
14      V_Sid     := usr.Sid;
15      V_Serial  := Usr.Serial#;
16      Stmt      := 'ALTER SYSTEM KILL SESSION ''' || V_Sid || ',' || V_Serial || '''';
17      Execute Immediate(Stmt);
18      END LOOP;
19* END;
20  /  and execute it every minute (change 1440 to change the frequence) :SQL> Declare
  2     Out_Var Int;
  3  Begin
  4     Dbms_Job.Submit(Out_Var,
  5     'Kill_Sessions;',
  6     Sysdate,
  7     'Sysdate+1/1440' );
  8* End;
SQL> /
PL/SQL procedure successfully completed.
SQL> commit;
Commit complete.
SQL>