Do multiple EJB servers coordinate?

At the moment, we are using Apache with Jakarta on the web server, which invokes EJBs on Oracle on a different box. Only the Oracle box thus has an EJB server and container, and at the moment all our EJBs are for database access only. Now, if we want to introduce some non-database EJBs on the web server, what implications does this have? First, we need to locate an EJB server to put on Apache+Jakarta. Is there one currently available? Second, how do the two EJB servers coordinate with each other to control a distributed transaction?

Similar Messages

Lookup on multiple ejb instances accross servers using servicelocator

Hi all,
i have a weird problem. I have to hit multiple ejbs hosted in diffrent server.
The problem is with the lookup and accessing..
some server's components have username and passwords and other server donot have.
So though i create a new Initial context instance with diffrent parameters.. it
is getting messed up inside. ie it is passing server A username and password to
server B's method call as for B i donot set username and password there is no
need of username and password.
the service locator will server for only one server's objects lookup. but here
we have multiple components in diffrent so different provider_URL INITIAL_CONTEXT_FACTORY,
SECURITY_PRINCIPAL, SECURITY_CREDENTIALS
and the for each i have a seperate sericelocator.. like each one for componet
A, B, C etc. in diffrent servers
and they inturn have InitialContext instance of their own. .. and these are initilized
with the factory, url, username and credentials...
this can be set as the system property also using -D option. thatz why .. when
i create for one component.... the already created Initial context factory is
getting affected with the new values. ;(((
one solution is every time create the Initial context... do not hold the reference
of contexts and donot hold reference of home handles..
but i need to cache atleast the home handles, if i am not caching.. the performance
is really bad.
on the cached handle if i call method i get a java.rmi.AccessException: Security
violation: insufficient permission to access method, though it worked for first
time,
and on the servers it which does not need passwords, method call is throwing java.lang.SecurityException:
Authentication for user ServerAUser denied in realm wl_realm
but the serverAUser belongs to server A, i get this error when i call a componets
method on Server B.
Is this a bug, or the Initial Context working it self is this way, the behind
the scence provider class is messing up. bea guys please reply if u know to solve
this problem, it will be of real help.
reagrds,
Arun.N

Problem resolved as this is an stateless session bean issues.

Creating multiple http servers on one machine

I created multiple http servers on one machine.
I did this in the following way:
Created a http service as nt service with the following command:
apache -i -n Testservice -f d:\oracle\isuites\apache\apache\conf\httpd2.conf.
When I start the service, I always get an error:
Didn't return an error. Cannot start service.
Can someone help me.
I need two httpd services as nt service. Because, I want to use oracle fail safe. So I need a service.
Alternative : I can create batch files. But I want to start these batch files as nt service. Is there a possibility on
Windows nt to do this, or an available tool.
Thanks in advance,
Iloon

          "Jason Rosenberg" <[email protected]> wrote:
          >Hello,
          >
          >I am wondering about having multiple servers on one machine.
          >I take it, each server will require a unique ip address, which can
          >be done either by using multiple NIC's or using multi-homing.
          If you want to have multiplie servers in the same machine and you want to cluster them then you need ip for each instance.
          If you want multiple instances without clustering, then you can have them run on the same ip but each one should have a different port.
          >
          >I am asking because I am wondering whether it will always be valid
          >for me in servlet code to identify my current server instance by
          >ip address (InetAddress). Or is there a better way to do this?
          If you are accessing the ejb/services on the same server using a servlet. You can get the context, simply using the default getInitialContext(). This should return the context to the local machine. This shoudnt require any ip information.
          >
          >Jason
          >
          >

How do you span a jta usertransaction across multiple jms servers?

I have an ejb that connects to multiple jms servers (non-clustered) and
          retrieves messages. Those messages are concatenated together and placed on
          another jms queue. Is it possible to do all of this inside of one
          transaction? I am having trouble pulling this off.


Sure, you can do this. Assuming you're using WLS JMS, you have to make sure that for all the JMS servers you're talking to, you use a connection factory with the "XA Connection Factory Enabled" flag set. You also need to make sure that you use JTA to start a transaction before retrieving the first message, and commit it after you're done with the final send.

How to configure one TREX host with multiple index servers ?

Hi All,
Does anyone know how to configure TREX on the one host,
with multiple index servers ?
Reason for this is to make better use of resources available on the host server(4 Gig, 4 Processor, Windows2003), to improve the search performance of
our KM content for portal users.
I am using TREX 7 and have not been able to do this,
despite reading the Single and Distributed install
documentation.
Any help would be appreciated.
Regards,
Andres

Hi Andres,
To make use of the RAM a Server provides you have to run two indexserver processes (each can then consume 2 GB);
Proceed like this:
1. Go to TREXdeamon.ini; check if section [indexserver2] is there (it is already provided, but not active in standard installation)
2. In TREXdeamon.ini go to
[daemon]
references sections below
programs=nameserver,preprocessor1,indexserver1,queueserver,alertserver
and add indexserver2 here. Restart TREX; second porcess is then started; can be checked in TREX monitor in Portal as well
3. To distribute existing indexes to the new process, start TREXadmintool and go to Index: Landscape
Go to the last two columns and move the indexes (move master here/secondary mouse click)
If you don't distribute the indexes the new index server process will be regarded when an new index is created.
Hope this helps!
cheers
Bettina

How to configure multiple RAS servers?

Hi
'Crystal Reports Server Embedded XI R2 - Sizing and Configuration Guide'
It mentions that we can get more license and add the servers in ClientSDKOptions.xml.
<ServerInfos version="2" xsi:type="CrystalReports.ServerInfos" id="1">
<ServerInfo version="2" xsi:type="CrystalReports.ServerInfo" id="2">
    <Server>SERVER1:1566</Server>
    <Adapter>TCPIP</Adapter>
</ServerInfo>
</ServerInfos>
<ServerInfos version="2" xsi:type="CrystalReports.ServerInfos" id="1">
<ServerInfo version="2" xsi:type="CrystalReports.ServerInfo" id="2">
    <Server>SERVER2:1566</Server>
    <Adapter>TCPIP</Adapter>
</ServerInfo>
</ServerInfos>
I tried this and added ClientSDKOptions.xml file in the web application lib directory
Added that to PATH
Our application uses (Crystal-2008 / rasapp.jar /rascore.jar)
com.crystaldecisions.sdk.occa.report.application.ReportClientDocument
When i commented out rcd.setReportAppServer(sn); it is not picking up from the XML file.
I am getting the below error
com.crystaldecisions.sdk.occa.report.lib.ReportSDKServerException:
There is no server specified.---- Error code:-2147217390 Error code name:serverNotFound
at com.crystaldecisions.sdk.occa.report.lib.ReportSDKServerException.throwReportSDKServerException(Unknown Source)
at com.crystaldecisions.sdk.occa.report.application.ReportAppSession.a(Unknown Source)
at com.crystaldecisions.sdk.occa.report.application.ReportAppSession.int(Unknown Source)
at com.crystaldecisions.sdk.occa.report.application.ReportAppSession.initialize(Unknown Source)
at com.crystaldecisions.sdk.occa.report.application.ClientDocument.for(Unknown Source)
at com.crystaldecisions.sdk.occa.report.application.ReportClientDocument.for(Unknown Source)
at com.crystaldecisions.sdk.occa.report.application.ClientDocument.open(Unknown Source)
at com.crd.report.crystal.CrystalFile.makeRcd(CrystalFile.java:65)
at com.crd.report.crystal.CrystalReportUtil.makeRcd(CrystalReportUtil.java:892)
Please help me how to set up multiple RAS servers.
Thanks
Sumathi

You are running an internal DNS server presumably but don't have these hostnames (A-NAME or C-NAME records) set on external DNS servers.
If you run a whois on your domain you can find our who hosts the DNS for the domain if you don't already know. Often DNS hosting companies will have web based tools for you to edit the DNS entries yourself or alternatively you may need to email them and ask them to create the records.
It sounds like you would like to point the addresses ubuntu.domain.com and win.domain.com to the IP address 92.62.26.10 as well. To do this you will have to make sure the services running on each box use a different port to one another. (I.e. You cannot have something running on port 80 on both servers).
Depending on your router also you may only be able to do basic forwarding (I.e. Port 80 forwards to Mac.domain.com; port 443 forwards to ubuntu.domain.com; port 25 forwards to win.domain.com).
If you need more flexibility you may need to get more external IP addresses.

How to configure single web server instance to multiple application servers..

Hi all,
we are running single instance of IWS6.0 SP2 on solaris, we want to comfigure this single instance to multiple application servers(JRun). Can any one advise me whether it is possible to do.
Thanks
Raj

Hi Raj,
"how to configure single web server instance to multiple application servers.."
It's not possible for setting up multiple applicataion servers for Single iWS instance.
Thanks,
Dakshin.

How to configure multiple smtp servers per domain

Hi,
how do we configure multiple smtp servers per domain/corporate in iplanet messaging server 5.2. i wanted to do this so that i can configure some domains with virus scanning and some domains without antivirus.

Hi Martin,
Well we are trying to run a report without exactly specifying the name of reports server anywhere, e.g. in database or in form or anywhere else. Now if I do not supply a reports server name using RUN_REPORT_OBJECT, the error it displays is FRM-41211: Integration Error : SSL failure ... However if I specify the reports server name in the form, the reports run perfect. Also the name of reports server is specified in rwservlet.properties.
Now the question goes as follows:
Can I run my report from Form without specifying the name of the Reports server anywhere at all. This is so because either an in-process reports server should be picked or the one which is entered in rwservlet.properties should be pickec up by default. Please correct us if we are wrong. once we are through with it, we have to move to Oracle 10gR2 concept of reports server.
Thanks in anticipation,
Ruchi/Saurabh

How to configure multiple report servers in Oracle 10 G R2?

I want to configure multiple report servers with my application deployed on Oracle 10G R2. Since R2 does not support report server clustering, how can this be achieved without any change in the application?
Currently, the application is running with single report server.

Hi Martin,
Well we are trying to run a report without exactly specifying the name of reports server anywhere, e.g. in database or in form or anywhere else. Now if I do not supply a reports server name using RUN_REPORT_OBJECT, the error it displays is FRM-41211: Integration Error : SSL failure ... However if I specify the reports server name in the form, the reports run perfect. Also the name of reports server is specified in rwservlet.properties.
Now the question goes as follows:
Can I run my report from Form without specifying the name of the Reports server anywhere at all. This is so because either an in-process reports server should be picked or the one which is entered in rwservlet.properties should be pickec up by default. Please correct us if we are wrong. once we are through with it, we have to move to Oracle 10gR2 concept of reports server.
Thanks in anticipation,
Ruchi/Saurabh

Multiple LDAP servers on single System

hi,
Would like to know if its a good idea to have multiple LDAP servers running on a single System (Hardware) ..
100,000 user base
We would like to run the old and new LDAP databases on the same server till we phase out the old LDAP database after migrating all applications..
System:
2 x V880 4CPU 8GB RAM --multi-master configuration
4 x V420R 4CPU 8GB RAM -- read only replicas

Shouldnt be an issue - thats not a particularly large user base and thats some heft y HW. Keep in mind though that they will be on different ports so any software you migrate may eventually need tweaking to the default port when the new takes over.

Multiple Database Servers Question

Hi,
Please forgive this ignorant question, but can someone tell
me how one would go about using multiple database servers?
Just as there comes a time where one would need more than
one web server and would need to use a load balancing
solution, what happens when one would need more than one
Database Server?
How does one go about implementing that solution?
Is there some way to have two database servers carrying the
same information with some kind of load balancing solution
in front of it(?) or does one place some tables on one
Database
server, and other tables on the other database server?
(I have no clue as to how things would work.)
Thanks in advance,
Joe

Microsoft SQL allows for clustering of SQL databases, so for
instance two servers connected to a fileshare and a virtual address
shared across the two physical boxes. Database connections are made
to the virtual addres which will then be handled by the active
node. Becuase a database is ultimately a file(s) on a disk it can
only be attached to one node at a time so you end up with an
active/inactive cluster.

LDAP Authentication Scheme - Multiple LDAP Servers?

How to set up ldap authentication so that multiple ldap servers are available? Scenario: ldap service is replicated through several servers, but does not sit behind a common dns/reverse proxy connection, so applications would list each ldap server and attempt to contact each in order if one or more ldap servers is unreachable.

How to set up ldap authentication so that multiple ldap servers are available? Scenario: ldap service is replicated through several servers, but does not sit behind a common dns/reverse proxy connection, so applications would list each ldap server and attempt to contact each in order if one or more ldap servers is unreachable.

Can I setup multiple SMTP servers / emails with one IMAP servers on the iPh

All my email arrives at one place, on one IMAP server. However I have 2 email addresses, and need to use a different SMTP server for each one. How to setup this on the iPhone? This is what I considered so far:
1. I don't see how to enter multiple addresses for the same account, and map each address to a SMTP server.
2. If I create multiple accounts, I have to enter multiple IMAP server, and the iPhone doesn't let me enter the same IMAP server information for different accounts.
3. I could create a second account with a dummy IMAP/POP server, and a real SMTP server. But then most likely if I respond to mails that arrive on my IMAP server (1st account), Mail will always use my 1st email address when responding. Instead I'd like it to automatically pick as From the To address of the mail I am responding to (as the desktop Mail.app does).
Alex

If you have multiple SMTP servers available, you can select from one of the available SMTP servers for a particular account.
After you've entered the SMTP server for the first account when creating the 1st account and you've entered the SMTP server for a 2nd account when creating the 2nd account, you'll have both SMTP servers available to use with either or both accounts.

How to mirror between the production server and the multiple local servers.

I am currently looking for the best way to correspond between our production server and the multiple local servers. Because the production server is the only server that holds the latest updating applications, and our local servers are located for each developer’s local machines where the all modifications and creations are done. So when the developer locally makes changes for assets or files, he creates a patch archive first, then accesses to the production side Administration console screen and imports them from Application Management screen.
We tried to find a way to see the imported date before (so we know which one has been imported as new.), but there is no show in the Administration console Application Management screen. There is Creation date but it’s set as we initially imported the full archive files, but not patch files. Since between applications have some types of the dependencies (like fragments or image files), what is the best way to keep mirroring between the production server and local servers? Or we should simply not use patch file for updating server?
Thanks,

Check out this utility : http://blogs.adobe.com/livecycle/2013/03/adobe-livecycle-configuration-migration-utility.h tml
Thanks,
Wasil

ISE Not Identifying AD Group Attributes when using Multiple ISE Servers

So we have multiple ISE Servers with differing personas. I was having an issue with our new ISE setup not identifying AD Group Attributes when using them in Authorization rules.
We have 2- 3395 appliances running Admin and Monitoring/Troubleshooting Personas and 2- 3395 appliances running as Policy server personas. We are running v1.1.1.268 with the latest two patches.
I was unable to pull Active Directory Group Attributes in any of my Authorization rules. After Resyncing all the boxes with the Primary Administration box I was able to do this. There is no bug listings for this occurance nor do we have Smartnet to call support for other reasons. I thought this might be useful to someone who is having the same issue and is unable to figure it out with TAC
-CC

Absolutely. All units said in-sync after setting their personas.
Here is our layout:
ISE-ADM-01 Admin-Primary, Monitoring-Secondary
ISE-ADM-02 Admin-Secondary, Monitoring-Primary
ISE-PDP-01 Policy Only
ISE-PDP-02 Policy Only
I synced one at a time starting with ADM-02. After completing the other two boxes. Active Directory Attribs were pulled down when using them in the Ext Group within my Authz rules.
-CC

Do multiple EJB servers coordinate?

Similar Messages

Maybe you are looking for