Weblogic 8.1 - 2 Tier Proxy Architecture

Hi,
I want to know more about the round-robin behavior of the HTTP proxy when I set my infrastructure up like the 2 Tier Proxy illustrated at:
http://e-docs.bea.com/wls/docs81/cluster/planning.html#1094289
If you have more than one HTTP Proxy instance, does the Proxies communicate with each other such that it can coordinate the round-robin behavior?
Next question, goes for both HW and SW load balancing. If I configure and start a server instance that joins the cluster while the PRoxy or HW load balancer is running, is it possible to update the Proxy or HW load balancer's server list such that the load balancer will know to spread the load to the newly configured and ready server?
Thanks,

The exception is thrown whenever I hit either the Commit or the Rollback button.

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Proxy architectures not resilient to failover without LB?

Hello,
          The proxy architectures shown in the weblogic documentation (basic and
          multi tier proxy) have clients connecting directly to a bank of HTTP
          servers.
          Later they have them connecting to a load balancer which distributes
          load across the HTTP severs. I undersatnd this second case, and
          failover is handled by the load balancer.
          I don't understand their first proposal. Failover is not guaranteed by
          the browser when navigating to a site that has mutlitple machines mapped
          to the same DNS setting (which is what they are getting at I imagine?)
          Can somebody please explain the actual phsyical setup they are proposing
          there?
          Thanks!
          Q


Yep, I did a factory default reset, no difference.
Hopefully an engineer high enough will recognize this issue and have it fixed in an upcoming firmware release. It's fairly disappointing it doesn't currently support resolving SRV records, it completely breaks services which rely on those types of DNS records, such as LDAP and VoIP from some providers which avail of them.
It would be nice if there was at least an option to disable the built-in DNS resolver so that when a client DHCPs, the router hands them the IP addresses of the ISPs real DNS servers.

N-Tier proxy authentication.

I need to implement N-Tier proxy authentication, could some one point me to right link. I found some on the Oracle Doc, buts not helping me , because it does not provide any code or example.
http://download-west.oracle.com/docs/cd/B13789_01/network.101/b10777/authuser.htm#1006352
and
http://download-west.oracle.com/docs/cd/B10501_01/appdev.920/a96590/adgsec03.htm#1004584
We have 9iAS, OID and 9iDB Rel2 and some other application server ie Cold Fusion etc, application are written in Cold Fusion and user login , I would like them to be authenticated via OID. I donot want to create a dtabase user for every application user too. We would like to use OID, however, we are also planning to use Fine Grained Security Control ( FGSC) too for row level security.
Thanks
Suhail

Bad news
Basically it is only supported when via Oracle Portal. I am not sure of the exact implementation and how it may work with providers for oracle portal.
Now the good news,
I have a way by implementing a couple of simple internal pl/sql packages that mod_plsql utilizes you can support n-tier proxy authentication with certs with or without Oracle SSO.

Performance issues with LOV bindings in 3-tier BC4J architecture

We are running BC4J and JClient (Jdeveloper 9.0.3.4/9iAS 9.0.2) in a 3-tier architecture, and have problems with the performance.
One of our problems are comboboxes with LOV bindings. The view objects that provides data for the LOV bindings contains simple queries from tables with only 4-10 rows, and there are no view links or entity objects to these views.
To create the LOV binding and to set the model for the combobox takes about 1 second for each combobox.
We have tried most of tips in http://otn.oracle.com/products/jdev/tips/muench/jclientperf/index.html, but they do not seem to help on our problem.
The performance is OK (if not great) when the same code is running as 2-tier.
Does anyone have any good suggestions?

I can recommend that you look at the following two bugs in Metalink: Bug 2640945 and Bug 3621502
They are related to the disabling of the TCP socket-level acknowledgement which slows down remote communications for EJB components using ORMI (the protocol used by Oracle OC4J) to communicate between remote EJB client and server.
A BC4J Application Module deployed as an EJB suffers this same network latency penalty due to the TCP acknowledgement.
A customer sent me information (that you'll see there as a part of Bug# 3621502) like this on a related issue:
We found our application runs very slow in 3-Tier mode (JClient, BC4J deployed
as EJB Session Bean on 9iAS server 9.0.2 enterprise edition). We spent a lot
of time to tune up our codes but that helped very little. Eventually, we found
the problem seemed to happen on TCP level. There is a 200ms delay in TCP
level. After we read some documents about Nagle Algorithm, we disabled a
registry key (TcpDelAckTicks) in windows2000 on both client and server. This
makes our program a lot faster.
Anyway, we think we should provide our clients a better solution other than
changing windows registry for them, for example, there may be a way to disable
that Nagle's algorithm through java.net.Socket.setTcpNoDelay(true), in BC4J,
or anywhere in our codes. We have not figured out yet.
Bug 2640945 was fixed in Oracle Application Server 10g (v9.0.4) and it now disables this TCP Acknowledgement on the server side in that release. In the BugDB, I see backport patches available for earlier 9.0.3 and 9.0.2 releases of IAS as well.
Bug 3621502 is requesting that that same disabling also be performed on the client side by the ORMI code. I have received a test patch from development to try out, but haven't had the chance yet.
The customer's workaround in the interim was to disable this TCP Acknowledgement at the OS level by modifying a Windows registry setting as noted above.
See Also http://support.microsoft.com/default.aspx?kbid=328890
"New registry entry for controlling the TCP Acknowledgment (ACK) behavior in Windows XP and in Windows Server 2003" which documents that the registry entry to change disable this acknowledgement has a different name in Windows XP and Windows 2003.
Hope this info helps. It would be useful to hear back from you on whether this helps your performance issue.

Weblogic & JNDI Data Source with proxy user.

We're trying to use Oracle proxy user authentication on a data source configured in WebLogic 10.3.6, however, we want to approach it in a programatic way. So we want to obtain the DataSource, and set the proxy related properties inside the application.
We came up with the following snippet:
Hashtable<String, Object> env = new Hashtable<String, Object>();
env.put(Context.INITIAL_CONTEXT_FACTORY, "weblogic.jndi.WLInitialContextFactory");
env.put(Context.PROVIDER_URL, "t3://10.1.1.10:7003");
env.put(Context.SECURITY_PRINCIPAL, "weblogic");
env.put(Context.SECURITY_CREDENTIALS, "weblogic");
Context context = new InitialContext(env);
javax.sql.DataSource ds = (javax.sql.DataSource) context.lookup("ds_puser");
OracleConnection oconn = (OracleConnection) ds.getConnection();
The problem comes up when we try to cast the connection to OracleConnection, the thing is that the returned type is actually a 1036_WLStub.
How can we avoid that type or cast to it to something useful? I found this reference on Oracle forums and he's being able to cast it directly:
Re: My problem in using weblogic Datasource and proxy user
Can someone help us out?
Thanks a lot in advance!
Edited by: 990800 on 27-feb-2013 13:26

A DataSource is an Interface. What the code gets from the jndi tree is some concrete object that
the code doesn't need to know the name of, or anything specific about it, as long as it implements
the DataSource Interface, which it successfully casts to, to allow calling the methods defined in the
DataSource Interface. If you call for a plumber, you don't need to know his name as long as you
can get a plumber, and can call the "Fix this leak" method, defined in the Plumber Interface.

3-tier vs. 2-tier system architecture (DEV- QAS- PRD)

Dear Xperts,
I would like to know your opinion about a 3-tier (DEV->QAS->PRD) vs 2-tier (DEV/QAS->PRD) BW system architecture.
Why should you choose for 3 instead of 2, or the other way around. Thus pro's & cons.
Thx.
regards,
JvB
ps xcuse me 4 the cross-post in the 2004s part. It should be posted in this forum.

Hello
2 Tier architecture will have Presentation Layer and DataBase Layer. So each and every time we have to access the Database directly and this may affect the DB Performance and if the number of concurrent users are more then it will be worser.
in 3 Tier case another layer "Application layer" has been incorporated as an intermediate between the above said 2 layers and this prevents the direct access to the DB. The performance is not highly affected. can Manage multiple concurrent users.
Heard about 4 tier came and installation process going in in Gulf. (not sure)
Sankar.

Weblogic 8.1 Webservice Client Proxy Authentication not working

We have a desktop console based Weblogic webservices client application that uses client stubs to establish the connection and communicate with the server where the WSDL was hosted.
We are facing a problem in authenticating the Proxy user with valid credentials.
We are using the following code to set the system properties and Authenticator class to authenticate the proxy user.
//Code Segment #1
Code:
System.setProperty("http.proxyHost", proxyHost);System.setProperty("https.proxyHost", proxyHost);
System.setProperty("weblogic.webservice.transport.http.proxy.host",proxyHost);
System.setProperty("weblogic.webservice.transport.https.proxy.host",proxyHost);
System.setProperty("http.proxyPort", proxyPort);
System.setProperty("https.proxyPort", proxyPort);
System.setProperty("weblogic.webservice.transport.http.proxy.port",proxyPort);
System.setProperty("weblogic.webservice.transport.https.proxy.port",proxyPort);
//System.setProperty("http.proxyType", "basic");
//System.setProperty("https.proxyType", "basic");
//System.setProperty("http.proxy.auth.type" ,"ntlm"); //This is not showing any impact
System.setProperty("http.proxyUser", "bsil\\ashok.kumar");
System.setProperty("https.proxyUser", "bsil\\ashok.kumar");
System.setProperty("http.proxyPassword", " xyzddd");
System.setProperty("https.proxyPassword", "xyzddd");
Authenticator.setDefault(new MyAuthenticator());
//Inner class
public static class MyAuthenticator extends Authenticator {
protected PasswordAuthentication getPasswordAuthentication() {
String username = System.getProperty("http.proxyUser");
     String password = System.getProperty("http.proxyPassword");
     return new PasswordAuthentication(username, password.toCharArray());
We are using following code initialize the stubs (Which internally opens a connection to the given endpoint base URL)
//Code Segment #2
Code:
SessionService_Impl sessionService = new SessionService_Impl(getEndPointURL(SessionServicePort.class));
port = sessionService.getSessionServicePort();
return port;
Using above code it always throws the following exception:
Code:
weblogic.webservice.tools.wsdlp.WSDLParseException: Failed to retrieve WSDL from https://apiclienttest.intralinks.com:443/webservices51/SessionService?WSDL. Please check the URL and make sure that it is a valid XML file [java.io.IOException: Proxy authenticator failed: java.lang.ClassNotFoundException: ]
if i replace the above code (Code Segment #2) to as bellow with Code Segment #3 then its working as expected. But we have been told that the Code Segment #2 is required as shwon above for the Weblogic ClientTimeout seconds feature so we cant replace the Code Segment #2 with Code Segment #3 since we don?t want to miss the ClientTimeout seconds feature for the application.
//Code Segment #3
Code:
SessionService_Impl sessionService = new SessionService_Impl();
          SessionServicePort sessionServicePort = sessionService.getSessionServicePort();
          ((SessionServicePort_Stub) sessionServicePort)._setProperty("javax.xml.rpc.service.endpoint.address", endPointBaseURL+"SessionService");
return sessionServicePort ;
why the Proxy authentication is failing with the Code Segment #2 and why it is passing in case of Code Segment #3
The endpoint base URL we are hitting is hosted on Weblogic server 9.0 (which is hosted at client side in US so it is behind our firewall).
Is some thing more do we need to do in Authenticator class???
Please help me if any one has worked on proxy server authenticator in java.

We have a desktop console based Weblogic webservices client application that uses client stubs to establish the connection and communicate with the server where the WSDL was hosted.
We are facing a problem in authenticating the Proxy user with valid credentials.
We are using the following code to set the system properties and Authenticator class to authenticate the proxy user.
//Code Segment #1
Code:
System.setProperty("http.proxyHost", proxyHost);System.setProperty("https.proxyHost", proxyHost);
System.setProperty("weblogic.webservice.transport.http.proxy.host",proxyHost);
System.setProperty("weblogic.webservice.transport.https.proxy.host",proxyHost);
System.setProperty("http.proxyPort", proxyPort);
System.setProperty("https.proxyPort", proxyPort);
System.setProperty("weblogic.webservice.transport.http.proxy.port",proxyPort);
System.setProperty("weblogic.webservice.transport.https.proxy.port",proxyPort);
//System.setProperty("http.proxyType", "basic");
//System.setProperty("https.proxyType", "basic");
//System.setProperty("http.proxy.auth.type" ,"ntlm"); //This is not showing any impact
System.setProperty("http.proxyUser", "bsil\\ashok.kumar");
System.setProperty("https.proxyUser", "bsil\\ashok.kumar");
System.setProperty("http.proxyPassword", " xyzddd");
System.setProperty("https.proxyPassword", "xyzddd");
Authenticator.setDefault(new MyAuthenticator());
//Inner class
public static class MyAuthenticator extends Authenticator {
protected PasswordAuthentication getPasswordAuthentication() {
String username = System.getProperty("http.proxyUser");
     String password = System.getProperty("http.proxyPassword");
     return new PasswordAuthentication(username, password.toCharArray());
We are using following code initialize the stubs (Which internally opens a connection to the given endpoint base URL)
//Code Segment #2
Code:
SessionService_Impl sessionService = new SessionService_Impl(getEndPointURL(SessionServicePort.class));
port = sessionService.getSessionServicePort();
return port;
Using above code it always throws the following exception:
Code:
weblogic.webservice.tools.wsdlp.WSDLParseException: Failed to retrieve WSDL from https://apiclienttest.intralinks.com:443/webservices51/SessionService?WSDL. Please check the URL and make sure that it is a valid XML file [java.io.IOException: Proxy authenticator failed: java.lang.ClassNotFoundException: ]
if i replace the above code (Code Segment #2) to as bellow with Code Segment #3 then its working as expected. But we have been told that the Code Segment #2 is required as shwon above for the Weblogic ClientTimeout seconds feature so we cant replace the Code Segment #2 with Code Segment #3 since we don?t want to miss the ClientTimeout seconds feature for the application.
//Code Segment #3
Code:
SessionService_Impl sessionService = new SessionService_Impl();
          SessionServicePort sessionServicePort = sessionService.getSessionServicePort();
          ((SessionServicePort_Stub) sessionServicePort)._setProperty("javax.xml.rpc.service.endpoint.address", endPointBaseURL+"SessionService");
return sessionServicePort ;
why the Proxy authentication is failing with the Code Segment #2 and why it is passing in case of Code Segment #3
The endpoint base URL we are hitting is hosted on Weblogic server 9.0 (which is hosted at client side in US so it is behind our firewall).
Is some thing more do we need to do in Authenticator class???
Please help me if any one has worked on proxy server authenticator in java.

Weblogic.jar in server java proxy

Hi,
weblogic.jar is so big size, when i have I/F item that's number of 30 for server java proxy. i have to deploy individual ear file included individual weblogic.jar,
like common jar, do i have to deploy it with ear every time?
is there a way?
thanks
venjamin
null

> Hi,
>
> you mean,   like external driver setting with
> aii_af_jmsproviderlib.sda,
>
>     <jars>
> <jar-name>ojdbc14.jar</jar-name>
>      <jar-name>weblogic.jar</jar-name>
> /jars>
>
> and then deploy it?
Yes.
> i do not need to add weblogic.jar into InboundEjb for server java proxy in
> order to call target ejb?
I do not understand this sentence.
What is your scenario?
Stefan

WebLogic 7.0 Installation : HTTP Proxy Problem

Hi there,
I have downloaded the Installer but I am having problem downloading. I have specified
the HTTP Proxy configuration but it cannot get through since our HTTP Proxy requires
username and password. Is there any way I can specify the username and password for
the HTTP Proxy?
Thanks.
Hafiz

On Tue, 10 Dec 2002 03:09:26 +0000, Kumar wrote:
>
Hi Guys,
We are facing a strange problems as regards to installing Weblogic 7.0 SP1 evaluation
software. We have a 6.1 server installed in the same box. If the instance of 6.1
weblogic is running , if we try to install the 7.0 SP1 server in the same box
but different drive , installtion is not giving the option for giving System username
& password.
Kindly let me know in case anybody has come with the similar issues.
OS : Windows NT 4.0
Weblogic Version 7.0 SP1
Thanks in advance,
KumarI only tried shutdown WLS 6.x before installing WLS 7.
Thank you,
Neo Gigs
"Follow the white rabbit..."

Multiple weblogic instances using IIS to proxy the requests

I have a need to run multiple weblogic instances using IIS as the web
server.
Does anyone know if this is possible. I am aware and have been able to run
multiple weblogic servers as an nt service,
but in those cases weblogic was being called and IIS was being bypassed.
Now the user base wishes to use IIS to proxy the requests.
I have been able to set IIS to forward using the .jhtml and .jsp file
extensions to the iisproxy.dll, but have not been able to forward these
requests to multiple weblogic instances. When the request is made it is
only looking in the first instance of weblogic for the request.
Is it possible to use weblogic and IIS with two or more weblogic instances,
without weblogic acting as a webserver.
I dont believe this is possible but I need to find out if this really is the
case.
Thanks for any help you can provide.
Ed

You need run each IIS web server instance in its own memory space. This can
be set through the Management Console for IIS.
Keith
Mike Kendzierski <[email protected]> wrote in message
news:[email protected]..
We tried to do this & Weblogic doesn't support this config. We opened upa
support call with them regarding this, but there is a problem with the way
that IIS & NT proxies .JSP pages to the weblogic servers. It's very
unstable this way & I wouldn't recommend this config.
We switched to Apache with virtual hosts to do this & it works fine. It's
probably not the answer you want to hear, but it works very well.
If you have any questions, just ask away.
"Ed" <[email protected]> wrote in message
news:3a296c2d$[email protected]..
We are using IIS4 with weblogic 4.5.1 sp11,
I thought I read someplace, their was a problem between wls 4.5.1 sp7
and
wls 5.1 where it didnt look in the folder where the dll was.
I will give it a try on monday.
Peter Mergaerts wrote in message <[email protected]>...
We tried to do the same thing.
We copied iisproxy.dll and iisproxy.ini to server1 and let IIS use this.dll
instance for proxying .jsp etc.
We copied the iisproxy.dll and iisproxy.ini to server 2, renamed
iisproxy.dll to iisproxy2.dll (to make sure another instance was used)
and
let the second iis site use iisproxy2.dll, but that didn't worked. (It
doesn't read the iisproxy.ini file located in the same directory as the.dll
file, altough in the manual it says it checks this first.) Now, I thinkit's
possosible to use several iisproxy.dll's as long as you rename it so
each
get it's own instance, the only problem is that each .dll doesn't readthe
correct iisproxy.ini file. (BEA, is this for SP7?)
Regards,
Peter Mergaerts

Implementation of a 3 tier model architecture

Hi,
I've just gotten a project to complete where users at 20 customer sites need to gain access to a database in our company and download/upload lots of tables/data from a web page (thru a firewall etc)
The way I initally intended to go was using an applet,RMI and JDBC in a 3 tier approach (mainly cos I've seen this approach used before)
Is this the best approach to take. What other alternatives could I use??
Could I use a more simple CGI type approach??
I am pretty new to java so appologies if this question sounds stupid
Willie

One alternative is HTML/Servlet/JDBC.

Advantages of Weblogic security framework over websphere security architecture

Hi,
Weblogic implement the security as a layer . And websphere, as far as I known
implements security as plug ins.
I'd like to known what are the advantages of weblogic security framework over
Websphere security archirtecture ? performance point of view, features, reliability,
robustness etc ...
Thanks a lot !

"walt" <[email protected]> wrote in message
news:3fca2d60$[email protected]..
>
Hi,
Weblogic implement the security as a layer . And websphere, as far as Iknown
implements security as plug ins.
I would consider the WLS security provider model to be a plugin model.
I'd like to known what are the advantages of weblogic securityframework over
Websphere security archirtecture ? performance point of view, features,reliability,
robustness etc ...
http://www.bea.com/content/news_events/white_papers/BEA_WLS_vs_Websphere_TCO_wp.pdf
http://e-docs.bea.com/wls/docs81/secintro/archtect.html
http://dev2dev.bea.com/products/wlserver/whitepapers/WLS_security_Framework.jsp
http://dev2dev.bea.com/products/wlserver81/index.jsp

SSL proxying with WebLogic

I am attempting to cluster two instances of WebLogic 5.1 using a third
          instance of WebLogic 5.1 as the proxy. Each instance resides on its own
          box. "The box" is NT today, Solaris in production.
          Can I have an SSL connection between the WebLogic Proxy and the Webloguc
          Cluster? Seems like I can, but I cannot verify this in the docs nor find an
          example of how to configure it.
          Can anyone show me how to do it?
          Bob Kiep
          Diamond Technology Partners


Thanks for verifying the feature set. We are using Checkpoint as the
          firewall, so we can use their secure connection add-on to ensure the web-app
          server connection is secure - it takes encryption load off of the app sever
          and web server CPU's anyway....
          Bob
          "Robert Patrick" <[email protected]> wrote in message
          news:[email protected]..
          > Bob,
          >
          > This is not currently supported. If you need this today, you can use a
          third
          > party tool like SafePassage by C2.net or a hardware-based solution. This
          is
          > something that will be supported in future versions of the server.
          >
          > Hope this helps,
          > Robert
          >
          > Bob Kiep wrote:
          >
          > > I am attempting to cluster two instances of WebLogic 5.1 using a third
          > > instance of WebLogic 5.1 as the proxy. Each instance resides on its own
          > > box. "The box" is NT today, Solaris in production.
          > >
          > > Can I have an SSL connection between the WebLogic Proxy and the Webloguc
          > > Cluster? Seems like I can, but I cannot verify this in the docs nor
          find an
          > > example of how to configure it.
          > >
          > > Can anyone show me how to do it?
          > >
          > > Bob Kiep
          > > Diamond Technology Partners
          >

Weblogic to IIS - reverse proxying - WL 7.0

Hi All.
Due to performance reasons, we cannot put IIS as a webserver proxy to weblogic
anymore.
Can anyone tell me if the built in webserver of weblogic can be configured to
proxy ASP pages ?
I know weblogic is an app server but is there a way we can add a handler in weblogic
that will handle ASP pages by proxying the requests to an IIS server sitting behind
it ?
Thanks,
Mallik

You can use weblogic.servlet.proxy.HttpProxyServlet to achieve this.
Heres the link for more info
http://edocs.bea.com/wls/docs61/adminguide/http_proxy.html
Nagesh
"Mallik" <[email protected]> wrote in message
news:3f00ece6$[email protected]..
>
Hi All.
Due to performance reasons, we cannot put IIS as a webserver proxy toweblogic
anymore.
Can anyone tell me if the built in webserver of weblogic can be configuredto
proxy ASP pages ?
I know weblogic is an app server but is there a way we can add a handlerin weblogic
that will handle ASP pages by proxying the requests to an IIS serversitting behind
it ?
Thanks,
Mallik

Setting up Proxy WebServer in WebLogic

Hi
My application requirement is something like this.
I have an application running in one computer domain(external to my machine from
where i am accessing). If i am accessing the application from the outside domain,
i am giving username and password in my url itself and the application works.
If the username and password are not provided, then a box pops up asking the two.
Now the requirement is to avoid the username and password hardcoding in the URL.
So what should i do to achieve this from weblogic server standpoint? I use weblogic
server 5.1 version.
Setting up the weblogic server as the HTTP Proxy , does it help? If so , how it
should be for this requirement?
Any pointers, Any inputs will be highly appreciated. Please help.
with regds
siva

Hi.
You could try sending a cookie with the authentication info.
Try posting this question in weblogic.developer.interest.security - this newsgroup is
mostly for installation questions.
Thanks,
Michael
siva wrote:
Hi
My application requirement is something like this.
I have an application running in one computer domain(external to my machine from
where i am accessing). If i am accessing the application from the outside domain,
i am giving username and password in my url itself and the application works.
If the username and password are not provided, then a box pops up asking the two.
Now the requirement is to avoid the username and password hardcoding in the URL.
So what should i do to achieve this from weblogic server standpoint? I use weblogic
server 5.1 version.
Setting up the weblogic server as the HTTP Proxy , does it help? If so , how it
should be for this requirement?
Any pointers, Any inputs will be highly appreciated. Please help.
with regds
siva--
Developer Relations Engineer
BEA Support

Weblogic 8.1 - 2 Tier Proxy Architecture

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