Cannot find any provider supporting RSA/NONE/OAEPPADDING

Got below error during web service request:- Cannot find any provider supporting RSA/NONE/OAEPPADDING
at javax.crypto.Cipher.getInstance(DashoA12275)

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Concatenate/merge/join Multiple Text Files in Windows

Last night I got many log files from 8 different servers, all the servers have date wise log files. I separated out similar logs and kept in a folder, now as per requirement team needs the one type of log in consolidated manner means “USAGE.log” of all days and servers in one USAGE-Consildated.log file.

I was searching for some utility on Google but not get any. Later I thought about DOS Batch command to do the same but a simple copy command did it for me.

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uncaught exception: [Exception… “Not enough arguments” (NS_ERROR_XPC_NOT_ENOUGH_ARGS)

I was testing my web application on FireFox5 , I faced “not enough arguments” issue. During investigation what I found is while opening the page we are hitting actual issues inside ‘addEventListener’ function. I searched web around behavior of ‘addEventListener’ in firefox and found that it expect third argument as well so I replaced below code locally and it worked for me =)

addEventListener(“load”, function(event) {

with Continue reading “uncaught exception: [Exception… “Not enough arguments” (NS_ERROR_XPC_NOT_ENOUGH_ARGS)”

How to read Blue Dump’s (BSOD) Minidump file

From couple of weeks in my brother’s machine he was getting Blue Dump screen with message “DRIVER_IRQL_NOT_LESS_OR_EQUAL”. Today to investigate I asked him to pass me the minidump files. Minidump are file that windows write for debugging purpose at below location:


in the above folder you will find files with ext .dmp
if you open this file with notepad or any other editor you will not be able to read it’s content.

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Mainframe CICS DB2 : Security mechanism not supported

I was writing a code to access DB2 in CICS where I encountered this error. This error encounters when you are trying to access a secured Db with default options. In order to get this working, you have to specify ‘securityMechanism’ property in your connection string with value as supported by server, see below:


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Mainframe CICS DB2 : java.lang.NoClassDefFoundError: com/ibm/crypto/provider/IBMJCE

I was trying to access Mainframe () DB2 using standalone application with “” driver where I encountered the below error

java.lang.NoClassDefFoundError: com/ibm/crypto/provider/IBMJCE

Problem was that ibmjceprovider.jar was missing from my classpath and file I added the jar file and then added below line in security works.

Spring cross site scripting XSS issues solution

XSS (Cross-site Scripting) is one of the most common vulnerabilities with a web-application. And, it can be exploited by hackers very easily without using any sophisticated tool.

How does it work?
Most web-applications have forms (text-box etc.) to receive input-data from user. So, a web-application may have a input-text-field to get 'user-id'. The hacker may enter anything in it including "JavaScript". If the hacker enters JavaScript (a malicious code), the server may process it, and then return it. In this case, user-id is not authenticated and it is sent as it is on the error page.

If the user's input data is returned as it is, the java-script code may execute. And, hacker wins!!

I am posting solution for Spring… 

In Spring-MVC, form-tags are used to create jsp page. Spring MVC provides multiple options to encode the html-escape-sequences on server side.

  • At global level, it can be defined in web.xml file. This will be applicable to entire application. All form-tags would refer to this definition. The sample code is shown below:


  • At page level, it is defined as a tag-declaration. The code is:

          Any form-tag, after the above declaration uses html-escape-sequence-encoding.

          <spring:htmlEscape defaultHtmlEscape="true" />

  • Third option is to define it as attribute for each form-tag. For example, a input-text can be defined as :

          <form:input path="name" htmlEscape="true" />

           Depending upon requirement, it can be implemented as global, page or tag level.

I hope this information helps. Please do post your comments 🙂

How to Delete .SVN folders in Linux and Windows

Hi all,

Yesterday I got a code for study that was actually maintained inside Subversion. The code I get was not a exported copy of subversion, because of this I get a deep hierarchy of code included ".svn" folder in each folder. Now before start working with the code in eclipse it was mandatory for me to remove the .svn folders.

Below I am providing solution for both OS (windows/Linux) to remove these recursive ".svn" folders. Hope you will find helpful.

Do post your comments 🙂

Solution under Windows: 

Right click on the folder and click Search..

Enter .svn as the filename to search for.

Click “More advanced options” and select:

– Search hidden files and folders

– Search subfolders

Press search button and delete the folders you find appropriate. 

Solution under Linux/Unix: 

find ./ -name ".svn" | xargs rm -Rf 


find . -type d -name ‘.svn’ -print0 | xargs -0 rm -rdf