Applet clients accessing EJB middle-tier

Hello
I am trying to have an Applet access the stateless session EJBs on the middle tier (OC4J 9.0.3)
The applet works fine in the AppletViewer.
However in the IE browser version 5.5, I get java.security.AccessControlException.
Which I can understand because applet is not allowed to open a RMI-IIOP port on the remote server.
What steps do I need to take to allow the applet to open such a connection. Signing jars?, java.poclicy file ?
I know that this setup works fine on JBoss and also on WebSphere. (using certificates)
Is this not suported by OC4J? Does the server need to support something or is it strictly a client side issue?
Any comments will be highly appreciated.
Thanks
vijay

We are having Applet-clients with OC4J and it works fine. We sign all our client-jars (including oc4jclient.jar) and our application has all permissions at the client. Modifying java.policy works as well, but signing Jar-Files is simpler and doesn't need any client-changes.
For normal operations it seems ok to include oc4client.jar for the client application, but we are using JMS and therefore need a lot of classes of oc4j.jar - so I buildt my own deployment-jar out of oc4j.jar.
If you use the cache_archive and cache_version attributes in the html-tag, all the jar-files are only downloaded at application startup if they are changed on the server (und version-numbers are increased). So startup-time is comparable to a local application.
Gilbert

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Is it possible to pass through the Identity of the Real User
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null

Trevor,
What type of OS is the app server running on? How is the user
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Trevor (guest) wrote:
: Is it possible to pass through the Identity of the Real User
: to the database when using an Application Server that uses
: connection pooling to connect to the database.
: Note. The Application server is running EJBs that connect to
the
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Remote client accessing ejb - question

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Desktop4 can use any of the options.
It really is a bit cumbersome to use at the moment, but drop me a note at
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Craig Wilson
Novell Product Support Forum Sysop
Master CNE, MCSE, CCNA
http://www.ithowto.com
Editor - http://www.ithowto.com
<[email protected]> wrote in message
news:[email protected]...
>> Yes to all of your questions.
>>
>> In regards to remote control you have two options.....
>>
>> 1) Use Desktop4.exe with password based remote control to connect to
> the
>> remote PC.
>> 2) Have the remote PC use the option to Request a remote control
> session
>> from the support personnel.
>>
>> Search support.novell.com for desktop4.exe and there should be a couple
> tids
>> that go into detail.
>>
>> In regards to distributing applications.....................
>> 1) Are you in a Domain or Non-Domain environment. This controls what
>> options you have.
>>
>> --
>> Craig Wilson
>> Novell Product Support Forum Sysop
>> Master CNE, MCSE, CCNA
>>
>> http://www.ithowto.com
>>
>> Editor - http://www.ithowto.com
>
> Thanks for the response! We are currently strictly netware with no
> domain, but we were looking at moving towards a domain (we are testing
> both OES cores to act as a PDC to authenticate through edir, both of
> which we got to function correctly :-) So we were just looking at the
> rest of the stuff we may or may not lose by going that route. We
> currently use ZENworks mostly to remote view student workstations,
> control admin machines, and image all the machines. We also occasionaly
> push out small apps or registry changes with Nal, but not that often. Can
> you simply remote view the workstation (without the user knowing) or does
> desktop4.exe only control the machine? I will have to check it out.
> Thanks again

Middle-Tier URL is not accessing

Dear All,
I am facing issue when i try to access the MT-URL..
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Thanks

Hi,
Have you started the iasconsole?
ORACLE_HOME/bin/emctl start iasconsole
Or have you checked the status of the middle-tier components using opmnctl?
ORACLE_HOME/opmn/bin/opmnctl status
HTH,
Jim

Corba client to EJB on OAS408 ?

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Can anybody please help me on how to do this
null

I am trying to do exactly the same thing
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code.
Thanks inAdvance.
Irfan Lateef

Oracle forms 10g (win Xp middle tier IE 8 Win 7- IE 8 client)

forms services 10.1.2.0.2
Database 11gR2 also on Win Xp pro SP3
Hi
I have a problem with java and Jinitiator and my understanding of what is / should be happening.
In the file forms/server/formsweb.cfg see below. I can alter the parameter
baseHTMLjinitiator=basejini.htm
###baseHTMLjinitiator=basejpi.htm
between the two alternatives. As it stands as shown the IE8 on the middle tier and on the database PC both work as near correctly as i can tell. On the Win 7 client IE 8 however crashes. switch it to the other way around and the
win 7 works and the win xp on the database server stops with frm-92095 error version number too low. while on the middle tier Xp PC a blank doucument is displayed.
How can i have both working at the same time please. I you need more information i will happily supply it.
Neill
# $Id: formsweb.cfg 15-apr-2005.13:17:30 pkuhn Exp $
# formsweb.cfg defines parameter values used by the FormsServlet (frmservlet)
# This section defines the Default settings. Any of them may be overridden in the
# following Named Configuration sections. If they are not overridden, then the
# values here will be used.
# The default settings comprise two types of parameters: System parameters,
# which cannot be overridden in the URL, and User Parameters, which can.
# Parameters which are not marked as System parameters are User parameters.
# SYSTEM PARAMETERS
# These have fixed names and give information required by the Forms
# Servlet in order to function. They cannot be specified in the URL query
# string. But they can be overridden in a named configuration (see below).
# Some parameters specify file names: if the full path is not given,
# they are assumed to be in the same directory as this file. If a path
# is given, then it should be a physical path, not a URL.
# USER PARAMETERS
# These match variables (e.g. %form%) in the baseHTML file. Their values
# may be overridden by specifying them in the URL query string
# (e.g. "http://myhost.mydomain.com/forms/frmservlet?form=myform&width=700")
# or by overriding them in a specific, named configuration (see below)
[default]
# System parameter: default base HTML file
baseHTML=base.htm
# System parameter: base HTML file for use with JInitiator client
baseHTMLjinitiator=basejini.htm
###baseHTMLjinitiator=basejpi.htm
# System parameter: base HTML file for use with Sun's Java Plug-In
baseHTMLjpi=basejpi.htm
# System parameter: delimiter for parameters in the base HTML files
HTMLdelimiter=%
# System parameter: working directory for Forms runtime processes
# WorkingDirectory defaults to <oracle_home>/forms if unset.
workingDirectory=
# System parameter: file setting environment variables for the Forms runtime processes
envFile=default.env
# Forms runtime argument: whether to escape certain special characters
# in values extracted from the URL for other runtime arguments
escapeparams=true
# Forms runtime argument: which form module to run
form=test.fmx
# Forms runtime argument: database connection details
userid=scott/xxxxxxxxxxx@orcl
# Forms runtime argument: whether to run in debug mode
debug=no
# Forms runtime argument: host for debugging
host=
# Forms runtime argument: port for debugging
port=
# Other Forms runtime arguments: grouped together as one parameter.
# These settings support running and debugging a form from the Builder:
otherparams=buffer_records=%buffer% debug_messages=%debug_messages% array=%array% obr=%obr% query_only=%query_only% quiet=%quiet% render=%render% record=%record% tracegroup=%tracegroup% log=%log% term=%term%
# Sub argument for otherparams
buffer=no
# Sub argument for otherparams
debug_messages=no
# Sub argument for otherparams
array=no
# Sub argument for otherparams
obr=no
# Sub argument for otherparams
query_only=no
# Sub argument for otherparams
quiet=yes
# Sub argument for otherparams
render=no
# Sub argument for otherparams
record=
# Sub argument for otherparams
tracegroup=
# Sub argument for otherparams
log=
# Sub argument for otherparams
term=
# HTML page title
pageTitle=Oracle Application Server Forms Services
# HTML attributes for the BODY tag
HTMLbodyAttrs=
# HTML to add before the form
HTMLbeforeForm=
# HTML to add after the form
HTMLafterForm=
# Forms applet parameter: URL path to Forms ListenerServlet
serverURL=/forms/lservlet
# Forms applet parameter
codebase=/forms/java
# Forms applet parameter
imageBase=DocumentBase
# Forms applet parameter
width=750
# Forms applet parameter
height=600
# Forms applet parameter
separateFrame=false
# Forms applet parameter
splashScreen=
# Forms applet parameter
background=
# Forms applet parameter
lookAndFeel=Oracle
# Forms applet parameter
colorScheme=teal
# Forms applet parameter
logo=
# Forms applet parameter
restrictedURLparams=HTMLbodyAttrs,HTMLbeforeForm,pageTitle,HTMLafterForm,log,allow_debug,allowNewConnections
# Forms applet parameter
formsMessageListener=
# Forms applet parameter
recordFileName=
# Forms applet parameter
serverApp=default
# Forms applet archive setting for JInitiator
archive_jini=frmall_jinit.jar
# Forms applet archive setting for other clients (Sun Java Plugin, Appletviewer, etc)
archive=frmall.jar
# Number of times client should retry if a network failure occurs. You should
# only change this after reading the documentation.
networkRetries=0
# Page displayed to Netscape users to allow them to download Oracle JInitiator.
# Oracle JInitiator is used with Windows clients.
# If you create your own page, you should set this parameter to point to it.
jinit_download_page=/forms/jinitiator/us/jinit_download.htm
# Parameter related to the version of JInitiator
jinit_classid=clsid:CAFECAFE-0013-0001-0022-ABCDEFABCDEF
# Parameter related to the version of JInitiator
jinit_exename=jinit.exe#Version=1,3,1,22
# Parameter related to the version of JInitiator
jinit_mimetype=application/x-jinit-applet;version=1.3.1.22
# Page displayed to users to allow them to download Sun's Java Plugin.
# Sun's Java Plugin is typically used for non-Windows clients.
# (NOTE: you should check this page and possibly change the settings)
jpi_download_page=http://java.sun.com/products/archive/j2se/1.4.2_06/index.html
# Parameter related to the version of the Java Plugin
jpi_classid=clsid:CAFEEFAC-0014-0002-0006-ABCDEFFEDCBA
# Parameter related to the version of the Java Plugin
jpi_codebase=http://java.sun.com/products/plugin/autodl/jinstall-1_4_2-windows-i586.cab#Version=1,4,2,06
# Parameter related to the version of the Java Plugin
jpi_mimetype=application/x-java-applet;jpi-version=1.4.2_06
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# Set this to "1" to enable Enterprise Manager to track Forms processes
em_mode=0
# Single Sign-On OID configuration parameter
oid_formsid=%OID_FORMSID%
# Single Sign-On OID configuration parameter
oracle_home=E:\DSHome_1
# Single Sign-On OID configuration parameter
formsid_group_dn=%GROUP_DN%
# Single Sign-On OID configuration parameter: indicates whether we allow
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ssoDynamicResourceCreate=true
# Single Sign-On parameter: URL to redirect to if ssoDynamicResourceCreate=false
ssoErrorUrl=
# Single Sign-On parameter: Cancel URL for the dynamic resource creation DAS page.
ssoCancelUrl=
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# case mod_osso will be given control for authentication or continue in
# the FormsServlet if not. It is false by default. Set it to true in an
# application-specific section to enable Single Sign-On for that application.
ssoMode=false
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# Administrators should set allow_debug to "true" if servlet
# debugging is required, or to provide access to the Forms Trace Xlate utility.
# Otherwise these activities will not be allowed (for security reasons).
allow_debug=false
# Parameter which determines whether new Forms sessions are allowed.
# This is also read by the Forms EM Overview page to show the
# current Forms status.
allowNewConnections=true
# EndUserMonitoring
# EndUserMonitoringEnabled parameter
# Indicates whether EUM/Chronos integration is enabled
EndUserMonitoringEnabled=
# EndUserMonitoringURL
# indicates where to record EUM/Chronos data
EndUserMonitoringURL=
# Example Named Configuration Section
# Example 1: configuration to run forms in a separate browser window with
# "generic" look and feel (include "config=sepwin" in the URL)
# You may define your own specific, named configurations (sets of parameters)
# by adding special sections as illustrated in the following examples.
# Note that you need only specify the parameters you want to change. The
# default values (defined above) will be used for all other parameters.
# Use of a specific configuration can be requested by including the text
# "config=<your_config_name>" in the query string of the URL used to run
# a form. For example, to use the sepwin configuration, your could issue
# a URL like "http://myhost.mydomain.com/forms/frmservlet?config=sepwin".
[sepwin]
separateFrame=True
lookandfeel=Generic
# Example Named Configuration Section
# Example 2: configuration forcing use of the Java Plugin in all cases (even if
# the client browser is on Windows)
[jpi]
baseHTMLJInitiator=basejpi.htm
# Example Named Configuration Section
# Example 3: configuration running the Forms ListenerServlet in debug mode
# (debug messages will be written to the servlet engine's log file).
[debug]
serverURL=/forms/lservlet/debug
# Sample configuration for deploying WebUtil. Note that WebUtil is shipped with
# DS but not AS and is also available for download from OTN.
[webutil]
WebUtilArchive=frmwebutil.jar,jacob.jar
WebUtilLogging=off
WebUtilLoggingDetail=normal
WebUtilErrorMode=Alert
WebUtilDispatchMonitorInterval=5
WebUtilTrustInternal=true
WebUtilMaxTransferSize=16384
baseHTMLjinitiator=webutiljini.htm
baseHTMLjpi=webutiljpi.htm
archive_jini=frmall_jinit.jar
archive=frmall.jar
lookAndFeel=oracle

You have a mixture of problems here.
1. Oracle Jinitiator is not supported for use on Windows 7
2. JRE 1.7 is not supported for use with any version of Forms on any platform. Be sure you do not have this version installed.
3. JRE 1.6 is not supported for use with Forms 10.1.2.0.2, however is supported with 10.1.2.3 (10.1.2.0.2 + patch ID 5983622) and only with IE 8
4. In order to use Win 7 with Forms 10 in a certified and supported manner, you must use 10.1.2.3 (meaning 10.1.2.0.2 + patch ID 5983622).
In short, my recommendation would be the following:
o Patch to 10.1.2.3 (assuming you have access to MyOracleSupport)
o Don't bother trying to use Oracle Jinitiator as it is old and has been desupported for a long time.
o Uninstall any instances of Jinitiator as it can cause conflicts with other JRE installations.
o Uninstall all instances of JRE 1.7. Reconfig your formsweb.cfg to use the JRE (Java Plugin) 1.6.0
baseHTMLJInitiator=basejpi.htm
jpi_classid=clsid:8AD9C840-044E-11D1-B3E9-00805F499D93
jpi_mimetype=application/x-java-applet;version=1.6
jpi_download_page=http://www.oracle.com/technetwork/java/javase/downloads/jre-6u27-download-440425.html
jpi_codebase=http://javadl-esd.sun.com/update/1.6.0/jinstall-6u27-windows-i586.cab#Version=1,6,0Finally, refer to this:
http://www.oracle.com/technetwork/middleware/ias/downloads/as-certification-r2-101202-095871.html#BABGCBHA

Client-middle tier communication.

We'd like to inform the middle tier of some choices made in the client but I'm not sure how this communication should be achieved.
For example, the user logs-on using a (non BC4J) method which establishes the user-name and access level.
I want an EntityObject (An AuditTrailEntity) to be able to set the username in any new rows created.
I want ViewObjects to restrict the rows returned based on the access level.
I see I can create some ViewObject methods and export them to the client but can these be class (static) methods? If not, then I must use object methods that set class variables but this doesn't feel like the "right" solution.
Can I set some properties in a Cookie somewhere (how)?
Is there another (better) method?
Any advice gratefully received.
Tony.
P.S.
As part of my investigations, I've tried adding a RowSetListener:
panelBinding.addRowSetListener(new HistoryRowSetListener());
class HistoryRowSetListener extends JUPanelRowSetAdapter
{ public void rowInserted(JUIteratorBinding aIterBinding, InsertEvent aEvent)
{ super.rowInserted(aIterBinding, aEvent);
Row lRow = aIterBinding.getCurrentRow();
lRow.setAttribute("UserName", sCurrentUserName);
But the getCurrentRow() returns the row that's current when the insert was performed, not the row that's being inserted. Is this intended? If so, How can I get the row that's being inserted?

In the client some properties are acquired (from a legacy system) and we want to communicate these to the middle tier. We'll want certain
ViewObjects (in several ApplicationModules) to behave differently.What are the client properties? Are they like read/write access priviledges?
If the client properties change, then we need to re-communicate with the middle tier to alter the ViewObjects behaviour again. For example,
the user is only permited to see their own (or their own region's data). For the most part this can be achieved by modifying the SQL but for
some attributes, we may show the row but hide the value.In 9.0.5 release of BC4J we will have access privilege support in both design time and runtime. We plan to have api for obtaining read/write access based on the logged in user role(s). You can use this info to map the ui.
I think our client could probably call ViewObject.setWhereClause() but I'd rather have this functionality encapsulated in the Business
components.
If you want to set username
then it should be on the session or root AM.
This sounds near the solution. Can I access the Session in both the client and middle-tier. I saw ApplicationModule.getSession() which I'm
hopi[i]Long postings are being truncated to ~1 kB at this time.

Access EJB's in JServer from MS COM clients

We need to access our EJB's from MS COM Clients (written in C++ currently using OCI)
Any suggestions ?
Thanks in Advance
null

I got the same problem.
Some posts here suggest you should put weblogic.jar under /common/lib,
I tried it but it didn't work. I also tried to put it under
webapps/yourweb/web-inf/lib
but it didn't work too. At last I had to unpack the weblogic.jar and put
them under
webapps/yourweb/web-inf/classes. This at least solved the problem you
mentioned.
I got other problem like ClassCastException that might be due to my own
code.
Anyway you can try the above approach. And please post your results here
just let
others know.
Thanks.
"Gary Bartlett" <[email protected]> wrote in message
news:3ce3fdf1$[email protected]..
>
Question -
Can anyone point me at documentation that will help me understand what jarfiles
are required to allow access EJB's that are deployed in Weblogic 6.1 froma Servlet
that is running under Tomcat.
I am currently getting the following exception:
javax.naming.NoInitialContextException: Cannot instantiate class:weblogic.jndi.WLInitialContextFactory.
>
>
>
Root exception is java.lang.ClassNotFoundException:weblogic.jndi.WLInitialContextFactory
atorg.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.jav
a:1394)
>
>
Thanks,
Gary Bartlett

Security exception while trying to access EJB from stand alone client

Hi!, I am trying a sample EJB application to R&D some security related issues. I want to access EJB through a web application as well as a stand-alone client. I have set approriate <method-permission> in EJB deployment descriptor. I am using users.properties/roles.properties file for authentication mechanism. I am using JBoss 3.2.
- On the web application side I am using BASIC authentication and the servlet is able to access the EJB OK, as long as I am using a login/password that has access to the EJB.
- Now I am trying to access the EJB using a stand alone Java class. These are the things I have tried till now:
=>Created a InitialContext with appropriate principal, credentials and tried getting a reference to EJB home interface. That resulted in security exception.
=>Logged into a LoginContext by using appropriate JBossSX classes and then tried getting a EJB home interface. Again security exception.
Now I am not sure what to do. I read at some places about client side container but not sure what that is. Does anyone has any ideas to try? Is there any other way I can make a swing application and a web application authenticate to EJB container?
Also can anyone point me to any documentation that gives some idea about how the security credentials gets propagated from web application/standalone client to EJB container?

It would be better if you can post your code...and DD that way we can help you better

Novell Client patch kills authentication to middle tier

Hi,
There was a recent patch for the novell client which replaces the file nicm.sys due to a security vulnerability. When I install this patch onto servers which have the Zenworks Middle Tier software installed it prevents the client machines from authenticating to edirectory via the middle tier servers.
Once I put the old vulnerable nicm.sys file back then the authentication begins working again.
I've had dig around to see if any one else is experiencing this problem but I haven't found anything.
Any suggestions on how I might fix this. I would ideally like to resolve this as I don't like my servers being vulnerable.
Thanks in advanced
Liz

You can install a server that only has Middle-Tier.
The rest of the stuff requires the client IIRC.
If you have upgrade protection, you may be able to test with a ZDM7 SP1 IR3
version of the middle-tier.
The problem is that Novell is no longer patching/testing against ZDM6.5, so
even if there was a code issue, its not likely you could get a fix.
Craig Wilson - MCNE, MCSE, CCNA
Novell Support Forums Volunteer Sysop
Novell does not officially monitor these forums.
Suggestions/Opinions/Statements made by me are solely my own.
These thoughts may not be shared by either Novell or any rational human.
"enegro" <[email protected]> wrote in message
news:[email protected]..
>
> Hi,
>
> There was a recent patch for the novell client which replaces the file
> nicm.sys due to a security vulnerability. When I install this patch
> onto servers which have the Zenworks Middle Tier software installed it
> prevents the client machines from authenticating to edirectory via the
> middle tier servers.
>
> Once I put the old vulnerable nicm.sys file back then the
> authentication begins working again.
>
> I've had dig around to see if any one else is experiencing this problem
> but I haven't found anything.
>
> Any suggestions on how I might fix this. I would ideally like to
> resolve this as I don't like my servers being vulnerable.
>
> Thanks in advanced
>
> Liz
>
>
> --
> enegro
> ------------------------------------------------------------------------
> enegro's Profile: http://forums.novell.com/member.php?userid=24444
> View this thread: http://forums.novell.com/showthread.php?t=335789
>

Accessing EJB's from CORBA clients

Hi!
Can someone answer one badly important question?
Is it possible to access EJB's from CORBA clients directly, as if the
beans were ordinary CORBA objects? I mean DIRECT access - WIDHOUT
CORBA/Java server application as a liason between CORBA client and EJB
server!
I'm using WebLogic Enterprise 5.0.1.
Thanks in advance.
Aleksey.

Please reference a later posting on this very same question.
-- Lou Caraballo
Sr. Systems Engineer
BEA Systems Inc., Denver Telco Group
719-332-0818 (cell)
720-528-6073 (denver)
Aleksey Bukavnev <[email protected]> wrote in message
news:[email protected]..
Thank you!
Aleksey.
Bill Lloyd wrote:
There is a java to IDL mapping, which is quite complex. To use it, you
must
have an ORB which supports, at minimum, CORBA 2.3. ORBs I know of which
support this include Orbix 2000 for Java, Visibroker 4.0 for Java, and
Orbacus 4.0 for Java.
Also, check out the June 2000 "Java Report" which has an article onthis.
>>
To be perfectly honest, though, the best solution is to write a bridge,in
Java. One side is IDL, which CORBA clients use. The implementation ofthat
IDL makes RMI requests to get the necessary info. This solution willwork,
guaranteed. The portion of the spec for the java to IDL mapping isstill
quite new, and I would expect some, uh, "unexpected features" at thistime.
>>
-B
"Aleksey Bukavnev" <[email protected]> wrote in message
news:[email protected]..
Hi!
Can someone answer one badly important question?
Is it possible to access EJB's from CORBA clients directly, as if the
beans were ordinary CORBA objects? I mean DIRECT access - WIDHOUT
CORBA/Java server application as a liason between CORBA client and EJB
server!
I'm using WebLogic Enterprise 5.0.1.
Thanks in advance.
Aleksey.

Accessing EJB's from Applet

Hai friends,
I want to access the ejb form the applet is it possible ?
if passible please let me know how we access?
Please send souce code to this id
[email protected]
Ok Friends i am wating for replys

Is it possible to access EJB's from applet?Yes, but not recommended.
if Yes,Please let me know how will happen and also if
possible send me the peace of source code for this.
mail id is : [email protected]
Are you inviting spam by passing your mail id?
Google and find out how EJB lookups are performed.

MTS Client Library Configuration (Case: Two middle tier servers)

One of Oralcle document states:
(a) If you need to configure Oracle Services for MTS on 2 middle tier computers (say #1, #2)then you have to install OraMTS on #1 middle tier system. The #2 middle tier system can use OraMTS which exists on middle tier system #1.
(b) For achieving this you have to configure Oracle Services for MTS client library on system #2.
Can any expert provide more information about how to configure the step (b) above.
My environment:
Oacle Services for MTS version: 8.1.7
Database: Oracle 8.1.6
Middle Tier: Windows NT 4.0
A fast reply will be highly appreciated.
Thanks in advance.

Vivek Raja
3) On machine 1 use the MMC snapin to create the Oracle service For MTS for database DB1.
You mean below
On machine 1>>
[start->programes-> oracle-oraHOME81->application development->oracle manager for microsoft transaction server]
make new service for DB1.
(oracleMTSService0 started)
On machine 2>>
[oracle manager for microsoft transaction server]
I add a new computer-"machine 1".
Then automatically OracleMTSServices0 on
"machine 1" displays.
and "Microsoft management console" dialogue box appears and ask save the change when i exit oracle manager for MTS. I choose YES.
that's all?
Am i right?
On machine 3>>
like machine 2.
You might be boring but Any documents offered by oracle doesn't say it clearly.
rf)) I read "using microsoft transaction server with oracle8-A73029".

Applet clients accessing EJB middle-tier

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