RE: Listener stops accepting client requests/connections
- From: Jesper Haure Norrevang <jhn.aida@xxxxxx>
- To: EVAD@xxxxxxxxxx
- Date: Fri, 12 Nov 2004 13:49:26 +0100
Denham,
The listener's job is to
- listen for incomming requests
- validate incomming requests from clients
(SID, service_name, client IP address etc.)
- Redirect (by bequeathing or returning an address)
the client requests to an dispatcher or dedicated server.
- listen for mere incomming requests.
Thus if the listener stops - intentionally og by error -
then the established connections with the database(s)
will continue to work.
The difficult part is to figure, why and when the
listener brokes. A little hint may be to execute
lsnrctl service
to see if the lisener is alive at all and whether
it is establishing or refusing new connections.
Just my DKK 0.02
(That is 2 =F8re in Danish).
Regards
Jesper Haure N=F8rrevang
-----Oprindelig meddelelse-----
Fra: oracle-l-bounce@xxxxxxxxxxxxx =
[mailto:oracle-l-bounce@xxxxxxxxxxxxx] P=E5
vegne af Denham Eva
Sendt: 12. november 2004 13:19
Til: oracle-l@xxxxxxxxxxxxx
Emne: Listener stops accepting client requests/connections
Hello Folks,
=20
Has anyone any idea what this issue could be.
We have two servers a 9.2.0.3 and 8.1.7.4.1 both on Windows 2000 Servers
Both these servers' listeners have started an odd behavior, for no
apparent reason they stop receiving/accepting client access.
However if you are connected you remain connected. There is also no
specific time base for this behavior. Once the Listener services have
been bounced everything appears normal for a day or so, then it happens
again.
Strangely if we have had to stop and start the server because of
parameter changes/anything the Listener is fine until a day or two
thereafter.
=20
I have had the problem with Oracle metalink and passed tons of trace
files and logs, with nothing.
This has become very frustrating.
=20
Has anyone else experienced this?
=20
Regards
Denham =20
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