Multiple IDLE connections

Hi,
I have two IDLE enabled IMAP accounts and I'm trying to work out if everything is working properly as it doesn't feel like it is.
When I check netstat it shows multiple established connections for each account which seems to many for it to be right.
Any thoughts on what to check? Server is showing two connections which would be right.
Thanks,
Adam

If you must have a 1-1 app user/connection to database user/connection, then using a DatabaseSession would probably be the easiest solution. The means that each user would create and connect to their own DatabaseSession when they login to the app. You could still share the same TopLink project instance to reduce some of the connecting/initialization overhead, but there would be no way to pool connections. Using a DatabaseSession would not allow for any shared caching across users.
Do you need to be connected as the user for reading, or just for writing to the database? If you can use a shared user/connection for reading, then you could use a ServerSession and have a shared cache. Define the shared user in the ServerSession, and when each user connects acquire a ClientSession through the acquireClientSession(DatabaseLogin) API, which allows you to specify the user/password to connect as for writing.
In TopLink 10.1.3 you may also wish to investigate the VPD and exclusive client connection support. This allows for some of your data to be read through a user/VPD secure connection, and other shared data to still be cached. It also allows for the user/VPD to be switched on a pooled connection.

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How to provide access to multiple users connected to a Dumb switch? (multi-auth/multi-domain)

Good morning everybody,
I am writing on behalf of not being able to implement a desired outcome in our company network. In fact the situation is as follows:
What I want to do is to be able to authenticate users (802.1x authentication) in our company radius server and authorize them access by having a dynamic VLAN assignment in a multi-user environment on one and the same port of a Cisco 2960 switch. So far, the authentication and authorization has been working completely smoothly (there are no problems with itself). The concept involves the configuration of both DATA and VOICE VLANs as I there is also phone authentication implemented. In order to simulate this environment I introduce a Dumb switch connected to my Cisco 2960 Catalyst.
What I have successfully managed to get to work so far is this:
1) On one switch port I have tried the “authentication host-mode multi-domain” and it worked perfectly for a PC behind a telephone, or with one PC connected to a the dumb switch + the telephone connected to another port of the dumb switch. Logically it is the same situation as there is a separation in two domains – DATA and VOICE. Bellow is an output from show authentication sessions for this scenario.
Interface MAC Address Method Domain Status Session ID
Fa0/23 0021.9b62.b79b dot1x DATA Authz Success C0A8FF69000000F3008E (user1)
Fa0/23 0015.655c.b912 dot1x VOICE Authz Success C0A8FF69000000F9009F (phone)
2) On the other hand, when I try the same scenario with the “authentication host-mode multi-auth”, the switch still separates the traffic in two domains and is able to authenticate all users, AS LONG AS they are in the same VLAN.
show authentication sessions:
Interface MAC Address Method Domain Status Session ID
Fa0/23 0021.9b62.b79b dot1x DATA Authz Success C0A8FF69000000F3008E (user1)
Fa0/23 b888.e3eb.ebac dot1x DATA Authz Success C0A8FF69000000F8008C (user2)
Fa0/23 0015.655c.b912 dot1x VOICE Authz Success C0A8FF69000000F9009F (phone)
However, I cannot succeed authentication of many users from DIFFERENT VLANs, neither in multi-auth nor in multi-domain modes.
What I want to get is an output like this:
Interface MAC Address Method Domain Status Session ID
Fa0/23 0021.9b62.b79b dot1x DATA Authz Success C0A8FF69000000F3008E (user1)
Fa0/23 b888.e3eb.ebac dot1x DATA Authz Success C0A8FF69000000F8008C (user2)
Fa0/23 0015.655c.b912 dot1x VOICE Authz Success C0A8FF69000000F9009F (phone)
I want the switch to authenticate the users anytime they connect to itself and for them to have an instant access to the network. (I tell this because I tried scenario 1) with multi-domain mode and authentication violation replace, and it worked but, two users never had access to the “Internet” simultaneously!!!
The configuration of the interface connected to the Dumb switch is as follows.
interface FastEthernet0/x
description Connection to DUMBswitch
switchport mode access
switchport voice vlan XXX
switchport port-security maximum 10
switchport port-security
switchport port-security violation protect
authentication host-mode multi-auth
authentication priority dot1x
authentication port-control auto
authentication timer reauthenticate 4000
authentication violation replace
dot1x pae authenticator
dot1x timeout tx-period 10
spanning-tree portfast
The way I see it is explained in the following steps:
- PC1 connects to the Dumb switch. This causes the Cisco switch to authenticate user1. This creates an auth. session with its MAC address linked to a domain DATA.
- When PC2 connects to the Dumb switch, this causes the violation replace which replaces the recent authenticated MAC address with the MAC of PC2. I would like it once authenticated to appear in the authentication sessions with a link to a new DATA domain linked to the VLAN assigned from the RADIUS server.
Is this possible? I think (in theory) this is the only way to provide authenticated access to multiple users connecting through Dumb switch to the network.
Has anybody ever succeeded in such a configuration example and if yes, I would be love to get some help in doing so?
Thank you
Stoimen Hristov

Hi Stoimen,
I have done a setup similar to yours with the only exception being VLAN assignment. When I used dACLs only, it makes things somewhat easier as the VLAN no longer matters. Remember that the switchport is in access mode and will only allow a single VLAN across it (with the exception of the voice VLAN). I think that is the real cause of your problem.
From what I can see, you have 2 options available to you:
1) Use dACLs instead of VLAN assignment. This means that an access list will be downloaded from the radius server straight to the authenticated user's session. I have tested this and it works perfectly. Just Google Cisco IBNS quick reference guide and look for the section that deals with Low Impact mode.
2) Get rid of the dumb switches and use managed switches throughout your network. Dumb switches will always be a point of weakness in your network because they have no intelligence to do advanced security features like port security, 802.1x, DHCP snooping, etc.
Hopefully someone else will chime in with another option.
Xavier

Multiple DataBase Connection in a Single Form

hi all
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If yes how to do this.
regards
jai
email:[email protected]

Sure you can access a database this way,
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And help me please solve this problem because I didn’t receive figures in that column where I changed database connection.
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I'm sure that both DB connections has the same dimension hierarchy. I can open the repot, but in it I don't see figures in that column where I've changed database connection...

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If I use the following configuration, with the Airport Express extending my network, will it handle multiple devices connected via a switch?
Modem---Airport Extreme- - -802.11n- - -Airport Express---Switch---multiple devices (eg. network printer and iMac).
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I spend most of my day in one of two places, each with a different WLAN, and I'd the phone to have the sense to change WLAN connection as they become available.
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Depends, on what your phone is.
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Hi all,
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My customer would like to use multiple AWS regions (e.g. US-East and Tokyo) because of BCP/DR.
thanks,
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Huge number of idle connections from loopback ip on oracle RAC node

Hi,
We have a 2node 11gR2(11.2.0.3) oracle RAC node. We are seeing huge number of idle connection(more than 5000 in each node) on both the nodes and increasing day by day. All the idle connections are from VIP and loopback address(127.0.0.1.47971 )
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The server is suffering memory issues occasionally (once in a month).
ORA-27300: OS system dependent operation:fork failed with status: 11
ORA-27301: OS failure message: Resource temporarily unavailable
Thanks

user12959884 wrote:
Hi,
We have a 2node 11gR2(11.2.0.3) oracle RAC node. We are seeing huge number of idle connection(more than 5000 in each node) on both the nodes and increasing day by day. All the idle connections are from VIP and loopback address(127.0.0.1.47971 )
netstat -an |grep -i idle|more
127.0.0.1.47971 Idle
any insight will be helpful.
The server is suffering memory issues occasionally (once in a month).
ORA-27300: OS system dependent operation:fork failed with status: 11
ORA-27301: OS failure message: Resource temporarily unavailable
Thankswe can not control what occurs on your DB Server.
How do I ask a question on the forums?
SQL and PL/SQL FAQ
post results from following SQL
SELECT * FROM V$VERSION;

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So I posted this question on Informatica's forum "Communities" but I wanted to post it here as well.
We're on Informatica 7.1.4 (yeah, I know its old, but we're about to upgrade) and we have been running into issues where one long running ETL fails because the Oracle 11gR1 DB terminated it's IDLE connection. From what I can understand, here's what happens.
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2. All the 10 ETLs create DB connections for the Writer thread at the kick off of the ETL
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I know the easy out is to have the DBAs not kill connections made by Informatica, but I was hoping there would be a more elegant solution.
Is there a way to have Informatica revalidate it's connection prior to writing? Something like, if connection doesn't exist, re-create, else write? It seems like this should be a server level setting.
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Are both of the Informatica Servers on the same machine?
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Hi All,
Is there anyway we can simulate multiple users connecting to the same session in oracle using PL/SQL.
Thanks,
MK.

As per the architects in our company, lots of users connect to the same session and access the database.Exactly what does this mean? A single session can service one user at a time. I would wager that the architects are envisioning (or describing) a connection pooling setup where the middle tier server maintains a relatively small number of connections to the database (each with its own session most likely) and users operate by getting a connection from the pool, making a request, and returning the connection back to the pool. At any given point, only one user can be using a connection.
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I am using Oracle Reports 10g R2. Could someone tell me if Oracle Reports supports multiple database connections for one rdf file, like this (using servlet)
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Edited by: user12239004 on Apr 27, 2010 2:14 AM

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Hello I upgraded our Cisco ASA 5520 with a Cisco ASA 5585. Though both ASA were configured with default TCP Idle Connection Timeout values people are now starting to complaint that idle SSH connections are being terminated. This is proper behavior but they were claiming it didn't occur with the old firewall. Our users are setting keepalives for 1800 seconds to get around this before I can bump the setting to infinite (setting 0). Is there a bug with the feature in older ASA OS?

Hi,
Before looking for a bug I would check the ASA logs (hopefully you are storing them to a separate Syslog server) and see why the connections are torn down (Teardown reason) and how long have they been on the ASAs connection table before they were torn down.
You also have the option to perform traffic capture on the ASA for the traffic in question and confirm why or which party terminates the connection.
I guess you can use the MPF on the ASA to configure separate idle timeouts for just these SSH Connections if you do not want to touch the global timeout values.
I have not run into any problems with the timeout settings on the older softwares. In the newer softwares (8.3+) I have run into these problems. In those situation the ASA has not removed the connection that have reached the timeout value. I have seen connection that have been idle for over 1000h.
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Hi!
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What are these connection attempts about? And, if they're malicious, what kind of rule should I set to block them?

Hi,
Is the customer trying to login with a single username for more than 3 times?
If yes, and you want to change the simultaneous login then edit the group-policy and vpn-simulateously -login parameter. vpn-simulatenous-login is set to 3 by default.
The following link gives details of the same:
http://www.cisco.com/en/US/products/ps6120/products_tech_note09186a00807e0aca.shtml#vpnc-sol-1
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Regards,
Anisha
P.S.: please mark this thread as answerd if you feel your query is resolved. Do rate helpful posts.

Multiple IDLE connections

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