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Home -> Community -> Usenet -> c.d.o.misc -> SQL*Net listener problem - Help appreciated
Hi folks,
I have a problem with our production SQL*Net listener. Twice in
the last two weeks it has refused any new connections from a certain
time during peak usage (eg late morning). Anyone already connected is
fine, however it refuses any new connections returning the message:
TNS-12203: TNS:unable to connect to destination.
You can't even do a status check on the listener from the server using
'lsnrctl status LISTENER_PROD'. It just sits and waits without returning
anything other than the lsnrctl banner and the 'Connecting to
(ADDRESS=(PROTOCOL=IPC)(KEY=FINPROD.world))' message. ctrl-c is needed
to cancel. 'lsnrctl stop LISTENER_PROD' won't work either. I have to
kill the process and start it up again. It is then alright until the
next time.
This is the case when trying to connect via sqlnet using sqlplus on the
server itself, and via clients, so it is not a problem with the 'ora'
config files which have not been changed recently anyway. Especially
when the training and test databases which get a lot less use are fine
and use the same 'ora' config files.
I've turned admin tracing on for the client, server and listener to see
if the trace or log files can give extra info but they don't.
Running:
Oracle Server 7.3.3.4
Solaris 2.5
lsnrctl for solaris v2.3.3.0.0
Oracle Financials 10.7 10SC v16.1
User connections via listener upward of 80.
'netstat -n' indicates a CLOSE_WAIT status, amoung others, for the
listeners port (1522). See below:
TCP
Local Address Remote Address Swind Send-Q Rwind Recv-Q
State
-------------------- -------------------- ----- ------ ----- ------ ------- 10.1.1.100.1522 10.1.16.61.1030 8760 0 17215 0 ESTABLISHED 10.1.1.100.1522 10.1.1.100.35831 8192 0 32520 0CLOSE_WAIT This however only indicates to me that the listener port is possibly hung?
Any help much appreciated.
Leigh Satchell
Information Technology Services
City of Greater Geelong.
Received on Tue Jun 23 1998 - 00:00:00 CDT
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