Обсуждение: How to identify connected Users?
Hello all, is there any way to identify users which are currently connected to the database? Does perhaps even exist a method to notify this users (e.g. to close the connection)? Thanks in advance and best regards, Jens ============================================= Jens Hartwig --------------------------------------------- debis Systemhaus GEI mbH 10875 Berlin Tel. : +49 (0)30 2554-3282 Fax : +49 (0)30 2554-3187 Mobil : +49 (0)170 167-2648 E-Mail : jhartwig@debis.com =============================================
>is there any way to identify users which are currently connected to the >database? Does perhaps even exist a method to notify this users (e.g. to >close the connection)? I don't know if this feature exists, but it will be very useful for me, too...
Jens Hartwig writes: > is there any way to identify users which are currently connected to the > database? Does perhaps even exist a method to notify this users (e.g. to > close the connection)? ps ax | grep postgres is the best way to go. -- Peter Eisentraut peter_e@gmx.net http://yi.org/peter-e/
>Jens Hartwig writes: > >> is there any way to identify users which are currently connected to the >> database? Does perhaps even exist a method to notify this users (e.g. to >> close the connection)? > >ps ax | grep postgres > >is the best way to go. This command tells me that several backends are running, and owned by the postgres user... (all my users are connected via the LAN to the database server).
On Fri, 1 Dec 2000, Peter Eisentraut wrote: PE> > is there any way to identify users which are currently connected to the PE> > database? Does perhaps even exist a method to notify this users (e.g. to PE> > close the connection)? PE> PE> ps ax | grep postgres PE> PE> is the best way to go. Nope. Using this you can identify UNIX users, instead of PG users. And, if the scripts are running from the web server, there will be only nobosy/httpd in most cases... Sincerely, D.Marck [DM5020, DM268-RIPE, DM3-RIPN] ------------------------------------------------------------------------ *** Dmitry Morozovsky --- D.Marck --- Wild Woozle --- marck@rinet.ru *** ------------------------------------------------------------------------
Dmitry Morozovsky writes: > PE> ps ax | grep postgres > PE> > PE> is the best way to go. > > Nope. Using this you can identify UNIX users, instead of PG users. Wrong. $ ps ax | grep postgres 1236 pts/1 S 0:00 psql template1 -U postgres 1237 pts/1 S 0:00 /usr/bin/postgres localhost postgres template1 idle > And, if the scripts are running from the web server, there will be > only nobosy/httpd in most cases... The question was how to find out what users are connected to the database -- there's your answer. Or do you suggest figuring out the identity of the person that connected to your web page? -- Peter Eisentraut peter_e@gmx.net http://yi.org/peter-e/
Hello Dmitry, Saturday, December 02, 2000, 3:15:51 PM, you wrote: DM> On Fri, 1 Dec 2000, Peter Eisentraut wrote: PE>> > is there any way to identify users which are currently connected to the PE>> > database? Does perhaps even exist a method to notify this users (e.g. to PE>> > close the connection)? PE>> PE>> ps ax | grep postgres PE>> PE>> is the best way to go. DM> Nope. Using this you can identify UNIX users, instead of PG users. And, if DM> the scripts are running from the web server, there will be only DM> nobosy/httpd in most cases... Well, you have to divide into users of the database (which is indeed your webserver or the user specified in the jdbc url) and the users of your webpage. When a user opens a webpage, the webserver itself (or the servlet, jsp, php - whatever) opens the db connection and delivers the output back to the user. So the user of the db in that moment is your webserver, jsp, servlet... and not the user who is calling your webpage. The "user" that is connecting to your db is normally a generic user. In short: The user of your webpage and the db-user are normally not the same. -- Best regards, Bruno mailto:bruno@dickhoff.de