Jacob.dll file

Hi,
Hi What is jacob.dll , do i need to install it,and from where? When I run my form having webutil pll and all setting as specified in familirization manual i get following things in Java console
Could you please let me know why i am getting this error and what is the solution ???
----------------Below is the Java console for form---
Oracle JInitiator: Version 1.3.1.8
Using JRE version 1.3.1.8 Java HotSpot(TM) Client VM
User home directory = H:\winnt Proxy Configuration: Manual Configuration Proxy: array.emirates.com:80 Proxy Overrides: *.emirates.com,<local> JAR cache enabled
Location: H:\winnt\Oracle Jar Cache
Maximum size: 50 MB
Compression level: 0
c: clear console window
f: finalize objects on finalization queue
g: garbage collect
h: display this help message
l: dump classloader list
m: print memory usage
q: hide console
s: dump system properties
t: dump thread list
x: clear classloader cache
0-5: set trace level to <n>
---------------------------------------------------- Loading http://localhost:8889/forms90/java/f90all_jinit.jar from JAR cache Loading http://localhost:8889/forms90/java/webutil.jar from JAR cache connectMode=HTTP, native. Forms Applet version is : 90270 java.lang.NoClassDefFoundError: com/jacob/com/ComFailException at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Unknown Source) at oracle.forms.handler.UICommon.instantiate(Unknown Source) at oracle.forms.handler.UICommon.onCreate(Unknown Source) at oracle.forms.handler.JavaContainer.onCreate(Unknown Source) at oracle.forms.engine.Runform.onCreateHandler(Unknown Source) at oracle.forms.engine.Runform.processMessage(Unknown Source) at oracle.forms.engine.Runform.processSet(Unknown Source) at oracle.forms.engine.Runform.onMessageReal(Unknown Source) at oracle.forms.engine.Runform.onMessage(Unknown Source) at oracle.forms.engine.Runform.sendInitialMessage(Unknown Source) at oracle.forms.engine.Runform.startRunform(Unknown Source) at oracle.forms.engine.Main.createRunform(Unknown Source) at oracle.forms.engine.Main.start(Unknown Source) at sun.applet.AppletPanel.run(Unknown Source) at java.lang.Thread.run(Unknown Source)
Thanks in advance ,
Shripad

Hi Shay,
I dod gone through the Document and I have signed also the jacob.jar and webutil.jar sucessfully.
Also copied the jar into Java directry .
But when I run the form follwong improvment I can see
Oracle JInitiator: Version 1.3.1.8
Using JRE version 1.3.1.8 Java HotSpot(TM) Client VM
User home directory = H:\winnt
Proxy Configuration: Manual Configuration
Proxy: array.emirates.com:80
Proxy Overrides: *.emirates.com,<local>
JAR cache enabled
Location: H:\winnt\Oracle Jar Cache
Maximum size: 50 MB
Compression level: 0
c: clear console window
f: finalize objects on finalization queue
g: garbage collect
h: display this help message
l: dump classloader list
m: print memory usage
q: hide console
s: dump system properties
t: dump thread list
x: clear classloader cache
0-5: set trace level to <n>
Loading http://localhost:8889/forms90/java/f90all_jinit.jar from JAR cache
Loading http://localhost:8889/forms90/java/webutil.jar from JAR cache
Downloading http://localhost:8889/forms90/java/jacob.jar to JAR cache
connectMode=HTTP, native.
Forms Applet version is : 90270
Now If you see above java console which shows webutil as well as jacob.jar are loaded .but still form does not show anything for long time .
What is the problem ?
Is it possible if we can contact you people by telephonic converstation if yes then could you please give us your nos and Timings .
regards
Sripad
Emirates Airlines

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Error due to wrong size of jacob.dll and solution to fix it

Hi
First of all this thread is not a question for you but rather an information I would like to share with you.
We are in the process of upgrading our Forms 6i to Forms 11g. The setup of Forms 11g (11.1.1.3.0) and Webutil is completed. I ran my first form with Webutil PLL attached to it. The form ran fine. I looked at the Java console for messages. Saw the following error message:
System library http://<oracle_home>:8090/forms/webutil/jacob.dll has incorrect size in WebUtil config. Download will be cancelled
After doing googling and a search on Metalink, found the cause of this error.
It was due to the actual file size of jacob.dll file and the one specified in webutil.cfg file was not matching. The entry in my webutil.cfg file reads as follows:
install.syslib.0.7.1=jacob.dll|106496|1.10|true
To find out the exact file size of your jacob.dll file, right click on it and on the 'General' tab you can see the exact size in bytes.
For example, *104 KB (106,496 bytes)*
In my case the file size of Jacob.dll was different due to the wrong version of Jacob I had downloaded. I had downloaded jacob_18.zip file from the following link:
http://prdownloads.sourceforge.net/jacob-project/jacob_18.zip
Again, googling through Forms forums and Metalink, found that the version of Jacob.dll we need to have for Forms 11g should be 1.10. So downloaded this version from the following link:
http://sourceforge.net/projects/jacob-project/files/jacob-project/1.10.1/jacob_1.10.1.zip/download
Unzipped it and the checked the size of jacob.dll, it was 106496, matching with the entry in webutil.cfg file !!
The next step was to delete the old jacob.dll file from <oracle_home>\forms\webutil folder and old jacob.jar from <oracle_home>\forms\java folder and copying the new files back the same folders.
The last step was to re-sign the jacob.jar file using sign_webutil.bat (or sign_webutil.sh for unix).
As suggested in Metalink, to be on safe size, also deleted the old jar files downloaded in your temporary folder and deleted the jacob.dll file downloaded in your \Program files\Java\JRE\bin folder.
Thats it ! Re-launched my form and checked the Java console. That incorrect file size message had gone !!
Hope this brief information will help you if you also face the same problem.
Cheers
Mayur

I still was getting error, but the fix made was
.     Cleared the JAR cache and ran test form. Checked JAR cache to confirm – no Jacob.dll
.     Ran http://<server>:9001/forms/webutil/jacob.dll in a browser - the downloaded Jacob.dll was the older version
.     Searched ....\oracle\wls_64 to ensure no spare Jacob.dll were sitting around – there were none
.     Guessed that Jacob.dll was being cached somewhere. Since you are using port 9001 (i.e., no HTTP server or webcache), I assumed it was the WLS doing the caching
.     Stopped and started WLS_FORMS
.     Tested form and it worked

How to use DLL files in java?

hi!
i am working on hardware based java programming. the drivers which i have are in dll format. the manufacturers dont have a java based driver api's for the hardware. i want to invoke the dll file using a bridge between windows invironment and jvm invironment. more over i am not preferring to use native interface interface and c program to tackle this problem.
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Is it a COM dll? You could use JACOB. If it's not COM, there's also JNA which as I understand it, is simpler than JNI, although I've never used it
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Edited by: georgemc on Aug 22, 2008 11:10 AM

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Hi..
(I posted this a few days back, but no reply..buddies, help me plz)
In Forms 10g while using webutil_c_api to call c functions,
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Hi Sriram,
Yes, you can place the dlls in the same folder as d2kwut60.dll. Also, for your dll
to get donwloaded to the client, you need to configure the webutil.cfg file and add an entry for your own dll , after the webutil dll entries, as shown below:
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Jacob.dll and jacob.jar have no size.

Hi. I downloaded jacobBin_17.zip to sign webutil.jar and jacob.jar. When i extract jacob.dll and jacob.jar to Webutil/Lib directory, I see the they both have 0 KB in size. The jacobBin_17.zip I downloaded is 175 KB in size. Is ths the correct size?, and if so, what's wrong?

the size of jacobBin_17.zip is correct (175KB) and When i extract jacob.dll and jacob.jar to Webutil/Lib directory the sizes are jacob.dll(92.0 KB (94,208 bytes)) and jacob.jar (16.1 KB (16,554 bytes)).
Try to unzipped the zip file again. it's maybe a windows error....it's strange
good luck

WUC-20 stated size error of jacob.dll

When running our web application we are receiving the following error messages :-
WUC-20 The stated size of the source file
http://appstest1.rcn.org.uk/forms90/forms90/webutil/jacob.dll does not match
that of the downloaded file C:\PROGRA~1\Oracle\JINITI~1.9\bin\jacob.dll
We have the same problem with JNIsharedstubs.dll and d2kwut60.dll
We copied across the files from the Application Server directory /u01/ora9ias/forms90/webutil directory directly to the client but when running the application these dll's are overwritten to 1k from the following sizes :-
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jacob.dll 94208
JNIsharedstubs.dll 65582
The client is a Windows2000 server running IE5. We have downloaded JInitiator 1.3.1.9 successfully.
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Have a look at this: Webutil error WUC-20 when running
Cheers, APC

How to register dll file

Hi
how i can use JNIregistry Project at:
www.trustice.com
to check registry for my dll and register if it isn't
i uesd JACOB project for this dll
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thanks alot

The program can't start because ftd2xx.dll is missing from your computer. Try reinstalling the program to fix this problem.
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This topic first appeared in the Spiceworks Community

Jacob.dll requirees write permission for webutil

we have to copy jacob.dll with write permission every time our network upgrades java version. is there any way we can avoid this...
Thanks
Lalitha

I assume, that when you upgrade Java version, webutil attempts by default to download dll files to the
new Java folder, and user do not have write permission to this folder.
There is a new webutil configuration feature available from 10.1.2.3 plus latest super merge path.
install.syslib.location.client
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WebUtil DLL files location with OAS v10.1.2.3 with Sun Java 1.5

Question about the future Client (under MS Vista) which works with OAS.
With MS Vista on the client, the certified versions are:-
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See table and notes at
http://www.oracle.com/technology/products/forms/htdocs/10gr2/clientsod_forms10gr2.html
Our application uses Oracle Web Util 1.0.6.
When this first starts up the server attempts to copy three DLLs (jacob.dll JNIsharedstubs.dll d2kwut60.dll ) to a particular directory (eg c:\program files\oracle\J-Initiator 1.3.1.18\bin ).
This has been a problem for my company's infrastructure since that directory is not writeable for most end-users. We got round the problem by creating a script run just once by the end-user which placed the DLL files in position before application is first run. The application still tries so copy the files, and fails - but this does not matter.
In the MS Vista client envt we will have the Sun Java 1.5 client instead of the J-Initiator.
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Earlier related post: Webutils - controlling where jacob.dll and co are set on client
Message was edited by:
user451945

Hello Jacob,
Oracle itself can fix the WebUtil issue with downloading DLLs to an appropriate location. However, there's more to running a Forms application on Vista - some of which Sun needs to find a solution for:
If Vista's User Account Control (UAC) feature is activated - which it is by default and which provides additional security compared to XP - Internet Explorer runs in protected mode, i.e. the iexplore.exe process is started with a LOW integrity level. In Vista every securable operating system "object" is assigned an integrity level - process, files, directories etc. each have an integrity level which can have the values low, normal / user, high / administrator or system. Every process started by a normal user will be assigned normal / user integrity level on process creation and thus is able to access all the files to which the user has access rights. The exception to the rule is Internet Explorer which is started with a low integrity level so if any malware / Javascript / IE extension takes control over Internet Explorer it cannot access any files or directories outside of its low integrity level "jail" because process with a lower integrity level aren't allowed to access any objects which have a higher integrity level. This means any program - including the Java plugin and any applet whether signed or not - which runs inside the iexplore.exe process cannot communicate with any process the user started (think about WebUtil's OLE2 to communicate with Office applications) and it cannot download any files to a user-specified directory (think of WebUtil's download features or even client_textio). Furthermore any processes you start e.g. through WebUtil's client_host command will inherit IE's low process integrity level and thus will not be able to do anything meaningful either. The same goes for your own DLLs which run within iexplore.exe.
Java 1.6 Update N will change the Java plugin architecture so that the Java runtime will execute in its own process with a normal / user integrity level and communicate with Internet Explorer via IPC instead of running within the internet explorer process. If you need more information look at the early access release of Update N:
https://jdk6.dev.java.net/6uNea.html#Overview
I think it would help if you also opened an SR so Oracle support knows there are more customers waiting for a solution.
Best regard
Andreas
Message was edited by:
leidner

Webutils - controlling where jacob.dll and co are set on client

To use Oracle Forms with OAS, the J-Initiator must be installed on the client workstation. When the client accesses an application various files are placed in the Oracle Jar Cache. In addition the first time that Webutil is encountered the J-Initiator tries to copy three DLLs (jacob.dll JNIsharedstubs.dll d2kwut60.dll ) to a particular directory (eg c:\program files\oracle\J-Initiator 1.3.1.18\bin ).
Under my company's locked-down workstation policy that directory (and most others in c:\program files) is not writeable.
Is there a way of configuring the J-Initiator / Webutil so that a different directory is used for these DLLs?
(We have a work-round, to post the files to client workstation along with J-Initiator when originally installed, but this not ideal for long term version control).

The reason why the /bin directory is used at the moment is that we can be assured that the JVM will be able to locate any code that goes there. If we allow location elsewhere then we start to get into problems with setting the O/S path.
What you want to do is possible and it's possible today, although it will need a little more work.
If you look at the webutil.cfg file there are three lines that drive the DLL download:
install.syslib.0.7.1=jacob.dll|94208|1.0|true
install.syslib.0.9.1=JNIsharedstubs.dll|65582|1.0|true
install.syslib.0.9.2=d2kwut60.dll|192512|1.0|true
If you comment these out, then they will not be auto-downloaded. You could then use the normal file transfer capabilities of Webutil to push the files to somewhere where you are OK to write to and which is in the O/S PATH

Dll files

Oracle forms for the web is trying to push
jacob.dll,
JNIssharedstub.dll,
d2kwut60.dll
to our client machines. Our users do not have administrative priviliges so the dll cannot be written to the file system. What is the suggested workaround?
so when i run the form from web i get webutil error -wuc-019 cannot write to local file c:/program files/oracle/ jini........
if i give write access to that folder on client then it downloads these files into the
c:/program files/oracle/ jini........ and it's all fine.
but we dont want to give the clients write access to c:/program files/oracle/ jini........ so what is the solution.
please reply soon.
i have jinitaitor installed on cleint in c:/progarm files/oracle /bin folder .
it occurs alwyas when teh user doenst ahve write access to that folder
please reply soon.

Duplicate of cannot write dll files to cleint

Failed to download dll files...

Hi,
Server O/S windows 2003
Client windows 7 32bit
OAS 10.1.2
Java Plug-in 1.6.0_31
Using JRE version 1.6.0_31-b05 Java HotSpot(TM) Client VM
Browser Microsoft IE 9
==================
Problem : can not download the jacob.dll, JNIsharedstubs.dll and D2Kwut60.dll
I'm able to download and save the file on client direclty by putting the download in browser, but through application, it gives and error
ERROR>WUC-19 [URLDownload.pullFile()] Unable to write to local file C:\PROGRA~1\Java\jre6\bin\JNIsharedstubs.dll. Failed to download URL http://150.149.148.2:7779/forms/webutil/JNIsharedstubs.dll
ERROR>WUC-19 [URLDownload.pullFile()] Unable to write to local file C:\PROGRA~1\Java\jre6\bin\d2kwut60.dll. Failed to download URL http://150.149.148.2:7779/forms/webutil/d2kwut60.dll
[* I tried downloading the jacob.dll using the download link directly putting it in browser, and it does find it and downloaded, I copied it manually to jre/bin folder so it does not show it failed to download]
So how can they be downloaded automatically on all client? Any clue please what I should look for?
Best Regards,

Well, first is that IE9 is not supported to be using with Forms 10.1.2.x. Second, if you want to use Win7 as the client, you must be using 10.1.2.3 plus the Forms Bundle Patch (ID 9593176). Part of the problem is that Win7 will not allow permission to the JRE to download and store the files to the JRE\bin directory which it does by default. To overcome this, the Forms product developers added a new feature to the Bundle Patch and newer versions which allows you to configure an alternative download location. For example, into the user home directory. Details can be found in the following MyOracleSupport document:
+How To Change The Default Download Directory For Forms WebUtil Client Files [Document 783937.1]+

How to creat COM object from dll file?

Hi,
I tried to read about this topyc, but I didn't found eny example that creat
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In Eclipse:
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Choose the Java perspective, then in the Package Explorer right-click on the project and choose Properties.
Select Java Build Path from the left pane then the Librairies pane from the right.
Click on Add External Jars button and select the jacob.jar file then click Open then Ok.
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Select the Environment pane then click on Select button.
Select Path and click on Ok button.
Then re-select Path and click on Edit button.
Add the two appropriate folders for jacob.dll and SMSCom.dll in the Path and click on Ok then Apply.
Regards

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GOT the Solution
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