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Do we have any system table in oracle where log on session is maintained for user

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Do we have any system table in oracle where log on session is maintained for user
posted Jan 4, 2014 by Neeraj Pandey

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1 Answer

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I believe you are looking for the currently loggedin user into Oracle database.

select distinct osuser, username from v$session;

Try the following link for more detail
http://arjudba.blogspot.in/2008/05/how-to-find-user-who-is-connected-to.html

answer Jan 5, 2014 by Luv Kumar
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The system log (/var/log/messages) of a CentOS 7.2 system has frequently-repeated message line pairs like:

Jul 18 14:00:01 localhost systemd: Started Session 307 of user root.
Jul 18 14:00:01 localhost systemd: Starting Session 307 of user root.

where the session number increases each time.

Looking around on this, e.g. Red Hat Bugzilla bug 727315, it looks like it's when crond starts a task; it looks like it might be fixed - I would think that would be in CentOS but don't know how to find/compare the Fedora and CentOS systemd versions to know for sure.

I found a post on a workaround - in /etc/systemd/system.conf to change the line:

#LogLevel=info

to:

LogLevel=notice

I did that and rebooted, and it has stopped the messages.

I'm worried though that this may have knocked out something of actual interest from the syslog.

So my question is, is there a better way? A way that info messages could go to some other log, or better yet, a way that those particular "session" messages, and only those, could go to some other log or be filtered out?

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