Three tier architecture with OBIEE 11g

With 10g, there was option to install plug in for IIS or j2ee container in web server and connect to BI server in application zone. With this BI environment can be secured behind firewall and allows to implement 3 tier architecture.
How to accomplish this task in 11g? I have OBIEE 11g server in application zone. Need to configure to allow external users to connect to BI server using https from web server in dmz.

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Servlets in three tier Architecture

Hi
We plan to use a three tier architecture with
Client --- Applet (JDK 1.2)
Middle tier -- WebServer and servlets
Database Server -- Oracle 8i
Our application should have data entry for several (5 - 12 ) tabs each consisting of around 15 fields . A few Jtables will also be used .
Arounf 5 to 10 validations or queries are required to be done with the database in the applet. Around 300 entries will be made by 12 different users in a day.
Is it advisable to use the above architecture ?
Is it required to use Enterprise JavaBeans ?
Will the use of servlets bring down the performance?
Overall is our architecture feasible for the requirement ?
We will be greatfull to your suggestions
Please also mail to [email protected]
N.Suresh

Hello,
We plan to use a three tier architecture with
Client --- Applet (JDK 1.2)
Middle tier -- WebServer and servlets
Database Server -- Oracle 8i
Our application should have data entry for several (5 - 12 ) tabs each consisting of around 15 fields . A few Jtables will also >be used .
Arounf 5 to 10 validations or queries are required to be done with the database in the applet. Around 300 entries will be made >by 12 different users in a day.Have you considered using Business Components for Java to develop your application? From what you have described about your application BC4J seems to be the ideal candidate.
Is it advisable to use the above architecture ?I see not limitation with your architecture. The only thing to keep in mind is that you should use applets only if you absolutely need to. Overall development and maintenance is much easier if you are just using servlets and JSPs.
Is it required to use Enterprise JavaBeans ?See below.
Will the use of servlets bring down the performance? No.
Overall is our architecture feasible for the requirement ?If you had not needed applets then I'd have recommended the following:
Scenario #1
Client --- Browser
Presentation Server -- Standard WebServer(Apache,OAS etc) running Servlets, JSPs talking to BC4J classes available on the local classpath
Database Server -- Any Oracle Database
Simplicity and ease of maintenance are some of the benefits of the above model. The limitation in the above scenario is that you cannot have a thin remote client(Java application or applet).
If you want a remote client then I'd recommend:
Scenario #2
Client --- Browser|Applet (if you know you have a small number of users then you can go for a client side Application too)
Presentation Server -- Standard WebServer(Apache,OAS etc) running Servlets, JSPs
Application Server -- Standard AppServer (VisiBroker|OAS|JServer) running BC4J components as EJB session beans or CORBA server objects
Database Server -- Any Oracle Database
In this scenario the servlets|JSPs will be going over IIOP to talk to the application server. On the client side, the BC4J framework ensures that the network traffic is minimized and also the client side Java application or applet is as thin as it can be.
Whether you go with scenario#1 or scenario#2 the cool thing about using BC4J is that you have to write your business logic only once and then you can deploy it in multiple platforms(local,EJB,CORBA) and access it from different clients(JSP,Servlets,Java,XML...) without modifying your business logic.
Hope this helps.
Please let me know if you have any questions.
Regards,
Arun
null

SharePoint 2013 three-tier architecture

Hi all, I am going to install SharePoint 2013 in a three-tier farm environment.
I understand that the only difference between web server and app server is whether or not the "Microsoft SharePoint Foundation Web Application" service application is running or not. If yes = web server, if no = app server. App server is also where
CA is installed. Both web server and app server will have connection to DB. When web server serves web page requests from users, it will go to DB directly to get the page content.
However, the real three-tier architecture actually means that only app server should have access to DB. Web server will get the information it needs from the app server.
Is my understanding correct so far? Why is there a difference between three-tier architecture when it is applied in SharePoint context?

No, all SharePoint servers directly interface with databases for services that they host (with some exceptions). 3 tier just means you have a "WFE" which end users interact with, and it doesn't matter what services are on that "WFE",
another SharePoint server which may do the same or other things, but users don't directly interact with, and of course the SQL Server.
Trevor Seward
Follow or contact me at...
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This post is my own opinion and does not necessarily reflect the opinion or view of Microsoft, its employees, or other MVPs.

How to install oracle applicatons in a three tier architecture

Hi,
i want to install oracle apps in a three tier architecture?
application tier -- middle tier
database tier -- database tier
Any steps or a meta link document
Regards
Sudharshan

Hi,
http://download.oracle.com/docs/cd/B34956_01/current/acrobat/120oaig.pdf
Pages 2-10 and Pages 2-19 don't specify this ???
They indicate only having to install with rapidwiz 1 time (as root user if appl/ora accounts setup) ??It is mentioned in Page 1-2
Release 12 utilizes the conf_<SID>.txt file in certain situations, for example where the database has not yet been created. The configuration file is also employed in multi-node (distributed) installs, where you only need to enter the install information once, on one machine, and can then copy the configuration file to other machines as required.
If you are installing in an environment where different machines are used to support the database and Applications tiers (as is typically the case), you would run Rapid Install on each machine in turn, starting with the database machine.
Regards,
Hussein

Pessimistic locking in a three-tier architecture

Hello,
we use a three-tier architecture to edit data in a database (Oracle 10g) with a rich-client application and we want to use pessimistic locking.
The client is communicating with a stateless bean on the application server (Jboss 4.2.3).
This bean-facade has methods for reading, writing and locking records that are transferred to the client encapsulated in entity beans.
The client controls the transactions as JPA-User-Transactions.
The methods in the container managed bean have the transaction attribute REQUIRED.
Before doing any modification on the client a method setLock() is called in the bean to lock the records in the database.
The lock is implemented with query hints:
Query query = em.createQuery("select e from Person e WHERE e.id = 252");
query.setHint(QueryHints.PESSIMISTIC_LOCK, PessimisticLock.LockNoWait);
So much for this theroy...
Practically we can set a lock on a record in the database.
But removing the lock is working when changing and committing the record only.
The record remains locked if performing a rollback or a commit without any changes.
Any idea what's missing in our implementation?
Our approach should work - theoretically...
Thanks in advance for any hint
Best regards,
Martin Kubitza
T&P, Bochum/Germany

Thank you for the hint on JPA - we are analyzing this now.
Meanwhile we tried something "easier": Optimistic locking
Optimistic locking works well with a version-column and the @VERSION annotation. But we get a problem with the @OptimisticLocking(type = OptimisticLockingType.ALL_COLUMNS annotation (see Optimistic Locking with OptimisticLockingType.ALL_COLUMNS
We are using Eclipselink V1.1 and (now) a bean managed transaction type)
Martin Kubitza
T&P, Bochum/Germany

Three tier architecture questions

Hello,
My question is in regards to using Toplink in a three tier architecture situation. If I wish to send an object A which has a collection of Bs and B has a collection of C ( A nested object structure with two or more levels of indirection). Is the best solution to have the named query be part of a unit of work so that even if on the client side somebody unknowingly were to make the modification to one of the entity objects ( a POJO) the shared session cache would not be affected ?
This is assuming the client side HTTP layer and the RMI/EJB layer are on different JVMs.
Some of the other suggestions I have heard is to retrieve it from the shared session cache directly and if in case I need to modify one or more of the objects do a named query lookup on that object alone and then proceed to register that object in a unit of work and then commit the changes.
Also the indirection would have to be utilised before the data objects are sent to the Servlet layer I presume ?(That is if I do a a.getAllOfBObjects() on the servlet side I would get a nullpointer exception unless all of B were already instatiated on the server side). Also when the objects are sent back to the server do I do a registerObject on all the ones that have changed and then do a deepMergeClone() before the uow.commit() ?
Thanks,
Aswin.

Aswin,
If your client is remote to the EJB tier then all persistent entities are detached through serialization. In this architecture you do not need to worry about reading and modifying the shared instance as it never the one being changed on the client (due to serialization).
Yes, you do need to ensure that all required indirect relationships are instantiated on the server prior to returning them from the EJB call.
Yes, you do need to merge the changes of the detached instance when returned to the server. I would also recommend first doing a read for the entity being merged (by primary key) on the new UnitOfWork prior to the merge. This will handle the case where you are merging into a different node of the cluster then where you read as well as allowing you to check for the case where the entity no longer exists in the database (if the read returns null then the merge will result in an INSERT and this may not be desired).
Here is an example test case that does this:
    public void test() throws Exception {
        Employee detachedEmp = getDeatchedEmployee("Jill", "May");
        assertNotNull(detachedEmp);
        // Remove the first phone number
        PhoneNumber phone = detachedEmp.getPhoneNumber("Work");
        assertNotNull("Employee does not have a Work Phone Number",
                      detachedEmp.getPhoneNumber("Work"));
        detachedEmp.removePhoneNumber(phone);
        UnitOfWork uow = session.acquireUnitOfWork();
        Employee empWC = (Employee) uow.readObject(detachedEmp);
        if (empWC == null) { // Deleted
            throw new RuntimeException("Could not update deleted employee: " + detachedEmp);
        uow.deepMergeClone(detachedEmp);
        uow.commit();
     * Return a detached Employee found by provided first name and last name.
     * Its phone number relationship is instantiated.
    public Employee getDeatchedEmployee(String firstName, String lastName) {
        ReadObjectQuery roq = new ReadObjectQuery(Employee.class);
        ExpressionBuilder builder = roq.getExpressionBuilder();
        roq.setSelectionCriteria((builder.get("firstName").equal(firstName)).and(builder.get("lastName").equal(lastName)));
        Employee employee = (Employee)session.executeQuery(roq);
        employee.getPhoneNumbers().size();
        return (Employee)SerializationHelper.serialize(employee);
    }One other note: In these types of application optimistic locking is very important. You should also make sure that the locking field(s) are mapped into the object and not stored only in the TopLink cache. This will ensure the locking semantics are maintained across the detachment to the client and the merge back.
Doug

Sharepoint 2013 Foundation three tier farm with two Webservers in NLB

Heloo,
I have been strugling with a problem the last htree days.
I have instelled and configured a sharepoint 2013 three tier farm with Sharepoint 2013 Foundation and MS SQL 2014 Express. This is a Test Farm and all the servers are Windows 2012 R2.
I have one SQL Server, one Application Server and two Webservers. The tow web servers are configured with Multicasting NLB. The NLB name is "sharepoint.ws.domain.net". The IP of the NLB is also in our DNS Zone.I have made a Web Application with
the name "sharepoint.ws.domain.net" on port 80 (NLB name) and a Site collection with the same name.
Now whene I am working on the Sharepoint Site I get very offen a login Window or I get the message "An error occurred while processing the request on the server. The status code returned from the server was: 0".
The error "An error occurred while processing the request on the server. The status code returned from the server was: 0" comes when I try to create a sub Site (most with no Permissions inheritance)... but not allways. I also get sometimes
the same message when I upload files (MS Office documents and PDF files).
The login Windows comes whene I am navigating throw the Sites... but also not allways.I go to the Site with an IE11 and the Site is also in the Intranet security sites.
Can you help me on this one...
Kind Regards
Ioannis Kyriakidis

With no hostname on the Web Application, you have to create Host-named Site Collections. So that complicates things a bit.
As far as NLB setup, you create Web Applications the same way you would otherwise. NLB is simply installed on both Web Servers and placed into the NLB VIP (virtual IP). The DNS A record points at the VIP.
Also set up your Windows NLB using Unicast instead of Multicast. If you have certain types of switches that block unicast ARP from multiple clients, e.g. Cisco, you may have to make an exception for them (e.g. http://www.cisco.com/c/en/us/support/docs/switches/catalyst-6500-series-switches/107995-microsoft-nlb.html).
Trevor Seward
Follow or contact me at...
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This post is my own opinion and does not necessarily reflect the opinion or view of Microsoft, its employees, or other MVPs.

Integrating SQL Server 2005 with OBIEE 11g

Dear Gurus,
Is there any documentation about how to using SQL Server 2005 as datasource combined with OBIEE 11g?
Clear steps with pictures will be very helpful.
Thank so much
Regards
JOE

Hi,
Please refer this link.
http://rnm1978.wordpress.com/2009/08/21/querying-sql-server-from-obiee-running-on-unix/
Re: How to connect Linux OBIEE repository to SQL Server 2005 database
Hope this help's
THanks
Satya

Question about three-tier architecture for MI

Hi,
my question is just for the right understanding. If we speak about three-tier architecture of MI is it right, that the following is meant:
Client = Presentation Tier
Middleware = Application Tier/Logic Tier/Business Logic Tier
Backend = Data Tier
Thank you and regards,
Florian

Hi Florian,
ICF (Internet Communication Framework) is actually a framework provided by any WebAS. MI makes use of this to receive/send the data from/to the client. It is referred to as ABAP Sync Service in MI terminology. Data comes in the form of HTTP stream. A service is created to provide this functionality. It performs the same job as of the J2EE engine in the earlier versions. The advantage being that an intermediate component between the client & middleware is not necessary anymore, because ICF is part of the WebAS itself.
You can have a look at this in the sicf transaction, provide the service name as MJC, under this u can see that there are 3 services which MI uses - mi_host, mi_service & mi_mds.
You can set these parameters in the mobileengine.config file to make the client connect to ABAP Sync Service.
MobileEngine.Sync.Gateway.Service=/sap/bc/MJC/mi_host
MI.Sync.ProtocolVersion=251500
I am in the process of writing a blog, please wait for it.
Regards,
Nameeta

Java applet three tier architecture

hi
i am developing three-tier architecture in java.
front-end is applet .when button is clicked events are generated , these events passed the parameters to JSP file and these jsp file is getting the data from remote database
and which is sent back to applet .this is my concept.
when i am trying to develop this application i am getting some problem what the problem is acess denied from remote database .
so please guide me in this issue.
have a nice day
bye
Prakash

Satish Shenoy (guest) wrote:
: I wanted to know about three tier architecture.
: I asked many people but couldn't get a proper answer.
: Can anoyone give me some information about it.
: Thanks in advance,
: Satish
Satish,
3 Tier architecture is essentially holding different parts of an
application on different tiers, typically the database is stored
on one tier, the business logic (and maybe the application) are
stored on the middle tier and the GUI is found on the client
tier. In oracle speak this translates into a data server, an
application server that delivers a Java application to the
client. N-Tier architecture is a natural progression to this,
where the middle tier can be split into multiple distributed
application servers.
You could say that client-server is 2-tier architecture.
Hope this helps
Steve
null

Three tier architecture using oracle dev suite 10g & oracle database 9i

hi ,
I am trying to build a software which will manage the database of a hospital through usual form design .
The tools I am using for these are
(1) oracle server database 9i (2) oracle developer suite 10g (3) windows xp professional service pack 2 .
I have designed the form modules in developer suite , created the tables in the database , connected those tables to the form modules using dml statements, now data can be inserted , updates and deleted through the form design . I have also deployed the forms using "run forms through web" and thereby other computers connected to the main computer through lan can also access the software using the web port address and the name of form to be used , these computers are not having oracle developer suite or oracle database installed , but they can access the software through the browser .
In this scenario my question is that , is this a three tier architecture as oracle database is the first tier , oracle developer suite is the middle tier where I am puting all the bussiness logics and oc4j instance is used to connect the database and the dev suite , and for user interaction we have the browser as the third tier ?
or this is a two tier architecture ? if this is a two tier architecture please let me know how can I implement a three tier architecture using oracle developer suite 10g and oracle server database 9i .
Thanks a lot for showing ur interest to read this

You need Oracle Application Server to deploy the forms when you go live.
What you are currently using OC4J which came in the developer suite. It is used only for development purpose and can not have capacity to handle higher load.
3 tier arch
1. Thin Client :-> Browser
2 Middle tier -> Oracle Appln Server /OC4j(in ur case)
3 Database Tier -> Oracle Database
Rajesh

Oracle Life science Data Hub integrated with OBIEE 11g

Hi all,
I have couple of questions from my end,
1. How Oracle Life Science Data Hub can be Integrated with OBIEE 11g.
2. Whether Oracle LSH is a separate software ? if it so kindly provide the link to download the LSH.
Many thanks in advance.
Regards,
Murali

Hi Murali,
I do not know whether obiee can use Oracle LSH as a source or not but please refer below link. It says that
1) Users can then launch the Oracle Business Intelligence Dashboard
either through Oracle LSH or through a URL to see data visualizations.
2)
Oracle LSH Release 2.2 supports using OBIEE 10.1.3.4.1 for both programs and
visualizations and OBIEE 11.1.1.5.0 for visualizations only.
Please check with you administrator.
Thanks,
Amol
(Please mark this answer, if you find correct)

Integration of Oracle BI Publisher with OBIEE 11G

Hi, all.
I want to know How to Integration of Oracle BI Publisher with OBIEE 11G?
Because I can't create data set using Oracle BI Analysis now, and the analyses and dashboards in BIEE presentation catalog is unvisible. Why?
Thank you.

I may be missing something, but BI Publisher Enterprise is installed at the same time as when you install BIEE on the server. You wouldn't install BI Publisher Desktop on that server. You can use BI Publisher Desktop locally to create templates for use in BI Publisher Enterprise.
I'm much more familiar with XML (BI) Publisher as part of Oracle Apps moreso than BIEE, so I could be wrong in my assessment.
Hope that helps,
Brett

Pre-Configured Virtual Machine with OBIEE 11g available?

Hi,
does Oracle offer a pre-configured Virtual Machine with OBIEE 11g? I found an old Virtual Box Image with 10.2..., but nothin newer.
Thanks for your help.
Christoph

Hi,
I don't suppose this is available yet is it? I notice Oracle offer quite a few downloadable images for Virtual Box now, but OBI isn't included in any that I could see.
Thanks,
Mike

Issue with OBIEE 11g(11.1.3) Installation

I have installed OBIEE 11g last evening. I was able to connect to the dashboard and run a simple report also – all before shut down. Now when I try to access OBIEE 11g thru port :9704 after starting the BI services, I am getting the following error.
“Error 404–Not Found
From RFC 2068 Hypertext Transfer Protocol — HTTP/1.1:
10.4.5 404 Not Found
My Weblogic server is working fine but im not able to access EM or ANALYTICS.
When I click Programs > OBI > Start BI Services it opens 3 wndows and says weblogic server is started and Im able to login to Weblogic server via “http://localhost:7001/console”.
When i start my machine the following services are started automatically:
1) Oracle WebLogic node Manager
2) OracleDBConsole
3) Oracle Service
4) OracleOraDB11g_home2_TNSListener
The following services are not started:
1) OracleDB11g_home2_ClrAgent
2) OracleJobScheduler
3) Oracle Process Manager(instance1)
4) Oracle VSS Writer Service
can you pls let me know how to start the Weblogic Admin Server?
I have even tried to reinstall and when the installation completes im able to login to “EM”, “weblogic” and “Analytics” also, but once i restart my machine im not able to login to “Analytics” as well as to “EM”.
The process im following is:
When i start the BI Services from Start->Programs->Oracle Business Intelligence->Start BI Services, i get a popup window where it asks for weglogic user and password, then i have entered the user as “weblogic” and has give the password entered at the time of installation, then 2 popups opens and it runs several java files, then im able to login to weblogic but no luck with “em” or “analytics”.
If i try to login to weblogic and try to start the “bi.em”, “biadminservices” i get java error message.
Even i dont get Oracle Logo on the Admin tool also.
Can you pls let me know the repository password also as i have tried with “Admin123? but no luck.
Every time when i do the installation im able to access all the services for the first time but once i restart the machine then only weblogic will be working.
I have installed OBIEE 11.1.3 on Windows 7 Ultimate N(32 bit) OS with Oracle11g Database
Pls let me know if im missing anything here?
Appreciate your help

This is a really basic question... but how much memory do you have, and how long have you waited for all the processes to load? On a Windows XP Virtual Machine with 3GB, I have waited 20 minutes before being able to access. And until then, you will see the error you have received.
Just a thought...

Three tier architecture with OBIEE 11g

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