How to enlarge the disk size of a VM drive?

For a client of ours we had to create a test in VMWARE but at a certain moment we noticed that the VM was running out of space, so we had to try to enlarge the disk size of the VM.

It is rather simple if you know it. In fact it is just an .exe file that you will have to run.

The steps:
Look in your VM for the VM that you want to enlarge.
Select it and double click on the disk that you want to enlarge.

Now you get the properties of this disk, remember the disk file and go to your explorer window and go to the directory of this VM, just to make sure that this file really exists.

If you are working on windows open a dos cmd(Start -> Run)
For the solution read more…

Now go to the VMWARE program directory in windows this is something like C:\Program Files\VMware\VMware Workstation
In this directory you will have to start the script that will enlarge the disk space of your VM-drive.

The command will look like: vmware-vdiskmanager.exe -x 19GB “F:\VMWare\Webcenter\test.vmdk” where 19GB will be the new size of your VM-drive.
You will see an indicator with the percentage of growth.

With this exe file it is also possible to shrink, create, defragment, rename, … VM-disks

APEX versus ADF

When talking about User Interfaces, Rapid Application Development (RAD), AJAX-like features such as Drag-and-Drop functionality a lot of frameworks pop up.

When you’re looking at Frameworks and tooling and vendor-specific solutions you could think of APEX, Application Development Framework (ADF), ADF Rich Client Components, Trinidad, …

To be able to compare these products, we’ve tried to build a matrix of features and how these features are managed in APEX and ADF.

We’re talking about 10.1.3 features, not yet about 11g because these aren’t production ready yet. 11g is very promissing about web 2.0 functionality and more service oriented approach, but for now let’s stick to what we have.

Feel free to comment, add features, add comparisons …

Proxy Authentication Failure in BPEL

When you’re trying to integrate external webservices into your bpel process and you need proxy authentication you will probably run into the following bug: 5851338.

A patchset is made available to resolve the HTTP-407 issue in your BPEL Environment. For more detailed information :

1) Download and review the readme for Patch.6869621 ( MLR # 7 of )
2) Apply Patch.6869621 in a test environment.

ESB error [TOPLINK-3001]

This is an error where I have been working on for too long.
And in fact it has a very easy solution.
I was building my application that I already mentioned in a previous post.
When I tested the xsl file(in the xsl file right click and choose test), everything looked fine and no problem occurred.
But when I deployed the application into my application server and I wanted to upload the content of the csv file into the database, I always received an error.

For the solution read more…

This was the error I received:
nested exception is: ORABPEL-11616 DBWriteInteractionSpec Execute Failed Exception. insert failed. Descriptor name: [DBTank.PersonFuelCosts]. Caused by Uitzondering [TOPLINK-3001] (Oracle TopLink – 10g Release 3 ( (Build 070608)): oracle.toplink.exceptions.ConversionException Omschrijving uitzondering: Het object [50,1], van klasse [class java.lang.String], kon niet worden geconverteerd naar [class java.math.BigDecimal]. Interne uitzondering: java.lang.NumberFormatException. at oracle.tip.adapter.fw.wsif.jca.WSIFOperation_JCA.executeRequestResponseOperation

Reading this error message I believed that there was something wrong with the translation from my csv content into the database, and that this was caused by a declaration in one of the xsd files. The type of the variable in the xsd file in the csv file was a ‘String’, but for the xsd file for the database adapter the type was ‘decimal’.
I replaced the types in the xsd files with different kinds of other types, but this didn’t changed a thing, I still received the error message.
After a lot of searching and testing I found out that, when I changed the value in the csv from 56,2 into 56.1 everything worked fine.
Strange thing is that my DB reads ‘,’ and not ‘.’ .
Ones I found this, the workaround was rather easy to find.
On my xsl file I used a function to replace the ‘,’ by a ‘.’
This function can be found in the ‘Component Palette’ where you have to choose ‘String Functions’ and select the ‘translate’ function.
Ones this was done I managed to get the data correct into my database.

Empty error message for instance in ESB

Yesterday I was creating an ESB that we wanted to use in a demo.
I was using a DB schema that I exported from a DB that was used in one of our internal applications.

The ESB itself was in fact a very simple example with just a file adapter to get the content of a csv file and a database adapter for inserting the content retrieved from this csv into the database.
I also checked the option to remove the csv when it was successfully retrieved.
Everything looked fine and I registered the application onto the application server.

So far, so good…

The application was registered without any problems and I wanted to test my application.
So I created a test csv file and copied it in the directory, waited 5 seconds until the file was removed, so I tought that everything worked correctly. I looked in the database, but my records where not inserted in the table.

Time to take a look at the ESB controller…
And indeed the status of my instance was invalid, so the next step to do is to take a look at the error message….
Strange, the error message was completely empty, no error, no trace, nothing…
This made it off course a bit more difficult to find out what the problem was.

So I took a closer look on this and tried to find out what I missed. I changed some things here and there, but did not found a solution, I always got the empty error.
Then I looked a bit closer to the table where I wanted to insert the data into and compared it with the content of the csv file. All the values of my csv for the primary, foreign, not nullable columns looked ok.

So why did he gave me that empty error message?
Then I tried to insert a record manually into the table, and I found out that this didn’t work either. Seemed that there existed some insert triggers on this table that would insert some data in a column when this field was empty and that these triggers used a packaged that was invalid(because it was using another schema that I didn’t imported). So just for testing I enabled all these triggers and tried to execute my esb process again. And it worked, so the problem I had was caused by a trigger on the table who was calling a procedure in an invalid package…

So, if you ever get an empty error message, the best thing to do is to check your database first…