Port use in Shared Server (MTS)

Hi,
Before I start; let me state it clear: If I had a choice to refuse shared server, then I would. But I am under pressure of management and other limitations. Therefore I have no option but to use shared server.
The current situation is: We use dedicated connections and plan to convert it to shared servers. There is a firewall between application server and database. This firewall only allows to some predetermined ports (such as 1521). We want to learn if we will be affected by firewall if we use shared server structure. When we use "lsnrctl services" we see that dispatcher ports are assigned automatically. (And these port numbers are between 40.000 and 50.000)
I want to be sure about how listener works. As we think, there can be two scenarios:
1. When a user connects to database, it only works with listener. Listener is the bridge between user and client. Therefore dynamically assigned port number to dispatcher is not important. And firewall will not be an issue. Because user can access listener and listener is the servant between dispatcher and client. (So no change is needed for firewall.)
2. Dispatcher's port is very important. Because after user is connected to the listener, user is assigned to a dispatcher and user is connected to database through that dispatcher's port. (Therefore we have to make changes in firewall.)
Which scenario is true? Do we have to change our firewall configuration?
Thanks for the all support...
Cagatay
BTW, I know it is possible to assign static port numbers to dispatchers. But if it is possible to use shared server without changing dispatcher settings, we would prefer this. (Without changing dynamic port behave of dispatcher.)

Yes,
The basic architecture.
The listener is a broker only. There are no permanent connections between clients and the listener.
The listener spawns a thread (the dedicated server process), this thread uses a different port.
This is called 'port redirection'.
A dispatcher can handle about 35 connections.
You can fix the port of a dispatcher. but as soon as the number of clients increases, you will be forced to open additional ports.
Your best bet is to set up Connection Manager to handle traffic between client and server, doing so you only need two ports.
The server communicates with Connection Manager.
Connection Manager is not installed by default.
Sybrand Bakker
Senior Oracle DBA

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Ports used by Application Server 8.2

How can I tell what ports are used by the Application Server and how can I control the main port(s) used by the Application Server ?
I do not want any of the ports used by the Application Server to conflict locally with any other ports I am using on my computer.

Hi!
You can find out what ports are used in Admin Console:
http://admin_host:admin_port/.
For example for Sun Java Studio Creator 2 Update 1:
http://localhost:25848/
Click in left pane on "Application Server" node and find http-listeners.
Thanks,
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Shared Server and Dedicated Connetion

Scenerio:
We have 1000 dedicated server database connection. My boss want me to configure one shared server connection out of 1000 dedicated connection for 100+ user of one particular module. Is it possible?
I guess if we activated shared server at database level then for 999 connetion we have to pass SERVER=DEDICATED at connection string. Which is not feasible for me seeing my current enviroment.

Rajib Sutradhar wrote:
Scenerio:
We have 1000 dedicated server database connection. My boss want me to configure one shared server connection out of 1000 dedicated connection for 100+ user of one particular module. Is it possible?
I guess if we activated shared server at database level then for 999 connetion we have to pass SERVER=DEDICATED at connection string. Which is not feasible for me seeing my current enviroment.Yes, you're correct.
Unless you start using a shared tnsnames.ora file ( some where at a netwerk share ) and have pointing TNS_ADMIN to it, it means updating every tnsnames on every client you have.
However I found this link:
http://www.filibeto.org/sun/lib/nonsun/oracle/11.1.0.6.0/B28359_01/server.111/b28310/manproc003.htm
Where it says you can limit the number of concurrent shared sessions used by setting the parameter SHARED_SERVER_SESSIONS
Reading more of it, it looks like you can also define a seperate listener, with a seperate port for the shared server configuration and configure the dispatchers with that listener information.
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Good Luck,
FJFranken
My Blog: http://managingoracle.blogspot.com

Problems establishing a Shared Server connection

I am trying to establish a connection to a shared server on a test database. The database is 10.2.0.4 and runs on Solaris 10. Here are some setting for my init file, and I think the last two do not need to be set.
# Shared Server
dispatchers="(PROTOCOL=TCP) (SERVICE=DBA10XDB)"
shared_servers=5
shared_server_sessions=20
I connect from my client which uses a tnsnames.ora file and does NOT specify a dedicated server. Here is the result of LSNRCTL SERVICES:
LSNRCTL for Solaris: Version 10.2.0.4.0 - Production on 22-MAR-2011 10:07:04
Copyright (c) 1991, 2007, Oracle. All rights reserved.
Connecting to (ADDRESS=(PROTOCOL=tcp)(HOST=)(PORT=1521))
Services Summary...
Service "BUILDTST" has 1 instance(s).
Instance "BUILDTST", status READY, has 1 handler(s) for this service...
Handler(s):
"*DEDICATED*" established:1 refused:0 state:ready
LOCAL SERVER
Service "BUILDTST_XPT" has 1 instance(s).
Instance "BUILDTST", status READY, has 1 handler(s) for this service...
Handler(s):
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Service "DBA10XDB" has 1 instance(s).
Instance "BUILDTST", status READY, has 1 handler(s) for this service...
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(ADDRESS=(PROTOCOL=tcp)(HOST=dbtest)(PORT=50059))
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Thanks. Your post helped me get things straightened out. After changing my tnsnames file I was getting an ORA-12520. Hmmm. I then noticed the (SERVICE=DBA10XDB) on my DISPATCHERS parameter, which was there by default when Oracle configured the init file initially. I removed that and it worked.
Then I was able to get connections to the shared server with and without the SERVER=SHARED setting. I knew I had read that Oracle will default to shared server if not specified, but your post indicated that a client connection can be forced to use the shared server, even when no dispatchers are registered. I think mine was not registered to my instance due to the (SERVICE=DBA10XDB) setting. If there are no registered dispatchers the connection request is rejected.

BPEL TCP Ports using RejectionMessage.wsdl

Hi all
I´m having a problem with ports used by BPEL server on IAS and on OC4J.
I was designing a BPEL process which uses RejectionMessage.wsdl file (provided by BPEL server). I was following Oracle instructions to do that:
<import namespace="http://xmlns.oracle.com/pcbpel/rejectionHandler"
location="http://localhost:9700/orabpel/xmllib/jca/RejectionMessage.wsdl"/>
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Port_____OC4J___________IAS
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If I edit RejectionMessage.wsdl to references JCAErrorHandling.xsd on port 7777, it stops to work on my OC4J development machine, but get´s work at IAS production machine.
What is your recomendation?
Thanks at all

Hi Clements
Ok, thanks for your answer.
Have you already used RejectionMessage.wsdl with a File Adapter?
The problem I´m facing now is that the message sent (to my dedicated BPEL Process which implements RejectionMessage.wsdl interface) by the File Adapter when a fault occurs has very poor content. If I look at BPEL server log the fault has a complete explanation...
Is there a way to get the complete error message?

Is my db using MTS or shared server?

hi guys,
(Oracle 9i)
I read that to specify a database as MTS, you have to set the DISPATCHERS parameter. I do not have this set, yet, I can see values for mts_dispatchers? Why is this?
SQL> show parameters DISPAT
NAME TYPE VALUE
dispatchers string
max_dispatchers integer 5
mts_dispatchers string
mts_max_dispatchers integer 5
Can I be sure that my DB is in dedicated server mode, as dispatchers is not set?
thanks

Hi OracleGuy777,
In general, OLTP-type applications can be suitable for MTS, while batch, data warehouse, and decision support applications are usually not appropriate for MTS.
Conclusion: If a system is CPU-bound and that system has enough RAM to fit all of its processes into physical memory, then MTS should probably not be used on that system. (Please see links and notes bellow)
You can see the number of MTS sessions using:
SELECT COUNT (*)
FROM v$session
WHERE server != 'DEDICATED';To see the number of Dedicated ones, just change != for = in the WHERE clause.
Tom Kyte notes that the MTS should not be used without a "real reason" and he notes that shared server connections are slower than with dedicated database connections (Oracle's default behavior):
- http://asktom.oracle.com/pls/ask/f?p=4950:...D:5269794407347
+"Unless you have a real reason to use MTS -- don't."+
+"a shared server connection is by design "slower" than a dedicated server (more stuff goes on, more complex) it is most likely only getting in the way."+
+"In the golden age of client server way back when -- you might have 100 users connected to the database from 9-5, but at any point in time, only 5 or 6 of them were actually ACTIVE. In this case, 5 or 6 shared servers would be perfect."+
+"if you were cpu starved and context switching like mad -- the dedicated server connection could be running at a slow speed itself, slower than the extra work that shared server would impose. therefore, lightening up the load on the server could be beneficial...."+
Also take a look here: http://www.dba-oracle.com/t_mts_multithreaded_servers_shared.htm
If you decide to try it, here are the steps:
- http://download.oracle.com/docs/cd/B10500_01/network.920/a96580/mts.htm#447168
Cheers,
Francisco Munoz Alvarez
http://www.oraclenz.com

What port number for Desktop Sharing using in Lync Server 2013 and Lync Online

Dear All,
My environment using Lync Server 2013 and Lync online on Office 365. I don't want my user using Desktop Sharing feature. then I need to know what port number for Desktop Sharing using in Lync Server 2013 and Lync Online.
I will deny this port on personal firewall each client.
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Hi,
I'm not sure you'd be able to do this with ports without impacting other application sharing features such as Q&A, Whiteboard, Poll etc - I'm pretty sure they all come under the same umbrella of ClientAppSharing.
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I hope that helps some.
Kind regards
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MTS (shared server) problem

Hi,
when i use MTS (shared server) architecture, after a while,
i see 1500 sessions in v$session, but, about 4000 oracle processes in the operating system which hits the os user max process limit and get the following error.
how can that be? 1500 sessions in v$session, and, 4000 oracle processes in OS.
i can not reproduce the same case since this is production.
in test, i tried to reproduce the case but even though, i create mts sessions once in a second, after 1 hour, no problem.
shared_server=10
max_shared_server=50
max_dispatchers=2 (each with 250 connections)
thanks,
ORA-27300: OS system dependent operation:fork failed with status: 11
ORA-27301: OS failure message: Resource temporarily unavailable
ORA-27302: failure occurred at: skgpspawn3

Afew things to check, firstly are the connections actually using shared server? check ther server column in v$session session may show as dedicated in which case th eocnnection is requesting a dedicated server and is ignoring the shared server configuration.
next check v$process have you got 4000 processes listed there? if so you can connect them back to the sessions e.g.
select vs.sid,vs.serial#,vs.username,vp.SPID,vp.PROGRAM
from v$session vs,
v$process vp
where vs.PADDR=vp.ADDR

IFS uses Oracle DEDICATED server instead of SHARED

Hi all,
Context:
OS = HPUX 11.00 64 bits
Oracle 8.1.7.0
iFS 1.1.9
I have configured my Oracle DB server to use MTS (Multi Threaded
Server) mode, using the "mts_dispatcher" parameters suite in
the 'init.ora' file.
I have also re-configured the listener to force SHARED server
mode, using the "netasst" graphical tool.
From that point, after restarting the DB server and the
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Regards,
Arnaud Chiaberge

Note that we don't certify the JDBC thin driver, only the JDBC
OCI driver.
I don't know enough about how MTS works to be able to fully
answer your question about why the processes come up in
DEDICATED mode.
However, I'm more concerned about the issue where you say that
too many Oracle shadow processes are being created and the
kernel is refusing to do so.
Note that you can adjust the maximum number of iFS processes
that can be created using the Target and Maximum Readonly and
Writeable connection pool settings. Also, you can adjust the
time that iFS will wait before trying to spawn a new connection,
once the Target setting has been reached.
If your problem is more challenging than that, please open a
Technical Assistance Request with Oracle Worldwide Support, and
give us more details, so we can see how we can help.

HT3819 Since the last AppleTV update I can no longer use home sharing. chI have checked all IDs, rebooted iTunes, AppleTV, and my router, eck port settings in my firewall. Nothing works. Is it me or did this update screw things up?

Since the last AppleTV update I can no longer use home sharing. I have checked all IDs, re-booted iTunes, my router, and AppleTV, and checked the port settings in my firewall. nothing works. Is it me or did this last update really scew things up?

Hi,
I tried everythink, but same as before!
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now even on iPads !
Frustrating!
I'm now more than convinced that this is caused by the latest iTunes version.
As some others stated in other threads .... it seems that Apple doesn't really take care of this problem. So what if, if we could make them feeling the same pain as we do. ... Just by dropping them a mail as soon as we have the problem again. Not more often, we don't want to be unfair, but everytime it happens.
I found this feedback site http://www.apple.com/feedback/itunesapp.html
I will start now with this.... maybe this will help to rise a little bit of attention
Tweety
This is the mailbody I always use
Hello all,
Since the last update to iTunes Version 10.6.1 (7) streaming content (Movies and TV shows) to Apple TVs and iPads has two major problems:
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all firmware or software are on latest available patchlevel.
At this moment, I can not recomend to others to buy this products.
I will drop this feedback everytime my famiily and I facing this problem... just to help you to get a better feeling of the urgency of this issue.
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Please let me know if anyone has experienced this issue.

We were trying to install WSUS role on Windows Server 2012 R2 using dedicated SQL Instance with static port on remote SQL Server 2012 SP1 CU7 on Windows Server 2012 R2.
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Same error even after rebooting the server multiple times.
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Remote SQL Server: Windows Server 2012 SP1 CU7 hosted on Windows Server 2012 R2
Event ID 7000:
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Event ID 7041
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Domain and account: NT SERVICE\MSSQL$MICROSOFT##WID
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User Action
Assign "Log on as a service" to the service account on this computer. You can use Local Security Settings (Secpol.msc) to do this. If this computer is a node in a cluster, check that this user
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http://support.microsoft.com/kb/2832204/en-us
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Assign the Log on as a service user right to NT SERVICE\ALL SERVICES in the GPO that defines the user right.
Exclude the computer from the GPO that defines the user right.
We moved the SCCM server to OU where no policies were getting applied and then applied the new GPO to that OU. Restarted the server and we were able to install WSUS role.
Regards
PR

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I have an app (Esri's ArcGIS Server 9.3.1) that I want to trace. Oracle is at 11.2.0.2.0. Our OEM is is at 10.2.0.4.0.
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