Re: sqlplus scott/tiger@tnsname hangs
- From: Prasad <p4cldba@xxxxxxxxx>
- To: "David cheyne" <david.cheyne@xxxxxxxxx>
- Date: Thu, 17 Apr 2008 04:57:20 -0700
Hi David/Jack,
Listener Logging was switched off on this database . This is a solaris 9
server .
Thanks
Prasad
On Thu, Apr 17, 2008 at 3:09 AM, David cheyne <david.cheyne@xxxxxxxxx>
wrote:
> Prasad,
>
> You say that the listener log was not enabled. Have you switched off the
> logging or was it not updating? You don't say which O/S your on, but you
> can easily automate its management.
>
> Without bringing the listener down on Unix/Linux:
>
> cp listener.log listener.OLD
> cat /dev/null > listener.log
>
> This copies the log to another name and blanks the current log. You just
> may need to watch disk space if your keeping multiple copies (tar/zip?)
>
>
>
> David Cheyne
>
>
> On 17/04/2008, Jack van Zanen <jack@xxxxxxxxxxxx> wrote:
> >
> > maybe check the size of your listener.log file
> >
> > I have seen occasions where a large log file saw this behaviour
> >
> > Jack
> >
> >
> > On 17/04/2008, Prasad <p4cldba@xxxxxxxxx> wrote:
> > >
> > > Greetings.
> > >
> > > This was something that happened today in one of the database and I am
> > > looking for list's
> > > response on this. This is a Oracle 9.2.0.7 database running solaris 9.
> > >
> > > Around 10am the Unix group called me and told me that one of the
> > > osprocess is taking more cputime
> > > then what it normally takes. and upon investigation I found that this
> > > database was running on
> > > shared server mode with the osprocess being the only dispatcher at
> > > that time . So I created another
> > > 3 dispatcher and stopped the existing dispatcher d000.
> > >
> > > and everything was going fine until 2.30pm when the user called me and
> > > told me that he is not able to
> > > make connection using servicename. so I did a test
> > >
> > > test1- sqlplus '/as sysdba'
> > > test2- sqlplus scott/tiger
> > > test3- sqlplus scott/tiger@tnsname
> > >
> > >
> > > I was able to logon to database successfully with test1 and test2 .
> > > However when I did test3
> > > it just hangs and it didnt allow me to interrupt it also.
> > >
> > > I checked if the dispatchers were busy or not and didnt found
> > > anything significant.
> > > The listener logging was not enabled so the initial reaction was to
> > > shutdown and start the
> > > listener which I did and at this time the test3 worked fine . However
> > > the user was still not able to
> > > access its application and I observed a large number of session in
> > > dba_blocker and dba_waiter
> > > and also few deadlock error in alert log file . So I killed the
> > > session on the beginning of the queue
> > > and it immediately releases all the sessions in dba_blockers and
> > > dba_waiters and the user was
> > > able to access the application.
> > >
> > > Here comes the hard part what is the root cause of this issue?
> > >
> > > Please advise.
> > >
> > > Thanks
> > > -Prasad
> > >
> >
> >
> >
> > --
> > J.A. van Zanen
>
>
>
>
> --
> ~~~~~~~~~~~~~~~~~~~~~~~
> David Cheyne
> BA(hons.)
> Oracle Database Administrator
>
> -- Outside of a dog, a book is a man's best friend. Inside of a dog it's
> too dark to read.
> Groucho Marx
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