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RE: How to restrict the user connections

From: Davey, Alan <Alan.Davey_at_encodasystems.com>
Date: Fri, 19 Mar 2004 05:44:54 -0700
Message-ID: <7487761A46884449834CAD636919C07B0120CDBE@nycexc02.Denver.cjds.com>


Hi Juan,

By "autonomus function" do you mean 'pragma autonomous_transaction'?

If so, then it works.

First dos prompt:
connect as system
SQL> alter system set license_max_sessions=2;

System altered.

--leave sql/plus session active.

second dos prompt:
connect as adavey

--leave active.

third dos prompt:
connect as scott/tiger
ERROR:
ORA-00019: maximum number of session licenses exceeded

Back to second dos prompt:
SQL> ed
Wrote file afiedt.buf

  1 create or replace procedure test as   2 pragma autonomous_transaction;
  3 begin
  4 null;
  5* end;
SQL> / Procedure created.

SQL> exec test;

PL/SQL procedure successfully completed.

I'm not familiar with developer, but from my experience with JDeveloper and Toad, the various windows are all working via one user session.

I believe we need more information from the original poster to see exactly what his requirements are.



Alan Davey
Senior Programmer/Analyst
Oracle 9i OCA
w) 973-267-5990 x458
w) 212-295-3458

-----Original Message-----
From: Juan Cachito Reyes Pacheco [mailto:jreyes_at_dazasoftware.com] Sent: 18 March 2004 15:40
To: oracle-l_at_freelists.org
Subject: Re: How to restrict the user connections

Hi Alan, this is true if he runs a single session client, This is not true if he for example is using developer , then every window can be a
distinct session.
Every user can have more than a session. For example what happen if he runs an
autonomus function?
:)
----- Original Message -----
From: "Davey, Alan" <Alan.Davey_at_encodasystems.com> To: <oracle-l_at_freelists.org>
Sent: Thursday, March 18, 2004 2:44 PM
Subject: RE: How to restrict the user connections

> Hi Juan,
>
> license_max_sessions is the correct answer until Senthil answer's Tim's
> question as to why it isn't good enough.
>
> You can go the trigger route, but unless there is a compelling reason to
do
> so (only allow specific users), it requires more time spent programming
and
> debugging (hmm, there are 20 current users and I now I can't log in as my
> dba account to perform/fix xxx).
>
> -----------------------------------------
> Alan Davey
> Senior Analyst/Project Leader
> Oracle 9i OCA; 3/4 OCP
> w) 973.267.5990 x458
> w) 212.295.3458
>
>
>
> -----Original Message-----
> From: Juan Cachito Reyes Pacheco [mailto:jreyes_at_dazasoftware.com]
> Sent: Thursday, March 18, 2004 12:00 PM
> To: oracle-l_at_freelists.org
> Subject: Re: How to restrict the user connections
>
>
> Hi Alan,
>
> LICENSE_MAX_SESSIONS specifies the maximum number of concurrent user
> sessions allowed. When this limit is reached, only users with the
RESTRICTED
> SESSION privilege can connect to the database. Users who are not able to
> connect receive a warning message indicating that the system has reached
> maximum capacity.
>
> LICENSE_MAX_USERS specifies the maximum number of users you can create in
> the database. When you reach this limit, you cannot create more users. You
> can, however, increase the limit.
>
> I think none of both are a solution, because license max user limits the
> number of user created, and license max sessions limits the maximum number
> of concurrent user sessions allowed.
>
> I think you 'll have to use a trigger.
>
> ----- Original Message -----
> From: "Davey, Alan" <Alan.Davey_at_encodasystems.com>
> To: <oracle-l_at_freelists.org>
> Sent: Thursday, March 18, 2004 11:29 AM
> Subject: RE: How to restrict the user connections
>
>
> > Hi,
> >
> > I replied to your email too quickly.
> >
> > You can also set license_max_sessions dynamically via alter system. So
if
> > you only need to set it for certain times, then that is another option.
> >
> > HTH,
> >
> > -----------------------------------------
> > Alan Davey
> > Senior Analyst/Project Leader
> > Oracle 9i OCA; 3/4 OCP
> > w) 973.267.5990 x458
> > w) 212.295.3458
> >
> >
> >
> > -----Original Message-----
> > From: Davey, Alan
> > Sent: Thursday, March 18, 2004 9:40 AM
> > To: 'oracle-l_at_freelists.org'
> > Subject: RE: How to restrict the user connections
> >
> >
> > Hi,
> >
> > Create a logon trigger that checks the number of sessions, and if more
> than
> > 20 exists, it will randomly select one and kill it. The idea being that
> > that user has probably been on long enough and needs to learn to share
> > resources.
> >
> > Alternatively, you can set license_max_sessions in your init.ora file.
> >
> > -----------------------------------------
> > Alan Davey
> > Senior Analyst/Project Leader
> > Oracle 9i OCA; 3/4 OCP
> > w) 973.267.5990 x458
> > w) 212.295.3458
> >
> >
> >
> > -----Original Message-----
> > From: Senthil Kumar [mailto:senthilkumard_at_summitworks.com]
> > Sent: Thursday, March 18, 2004 9:28 AM
> > To: oracle-l_at_freelists.org
> > Subject: How to restrict the user connections
> >
> >
> > Hi List,
> >
> > How do I restrict the number of user connections. I want only 20 users
to
> > access the database on a particular time.
> >
> > How do I do this.
> >
> > TIA
> > Senthil.
> >
> >
> > ----------------------------------------------------------------
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Received on Fri Mar 19 2004 - 06:41:41 CST

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