Oracle BEA Weblogic Server 10 "invalid pad byte" error

First of first, BEA has the worst error message ever, it just does not make any sense, maybe just for me!

When switch to a new weblogic domain, we like to copy the configuration files to the new domain in order to reserve some configurations works, such as JMS, JDBC settings.

However, you may get weblogic.management.ManagementRuntimeException: com.rsa.jsafe.JSAFE_PaddingException: Could not perform unpadding: invalid pad byte.

Does this give you any hint that your password-encrypt is incorrect?

You may need to re-encrypt your password in the new domain by using the BEA supplied weblogic.security.Encrypt tool to archive this goal.
java -cp ./weblogic/server/lib/weblogic.jar -Dweblogic.RootDirectory={your domain} weblogic.security.Encrypt {your plain text password}

Seam getting start with JBoss Tools Plugin for Eclipse

Prerequisites:
Install Eclipse and JBoss Tools as Plugin for Eclipse.
Install JBoss AS
Follow the steps to create a HelloWorld Seam web project.

JPA DAO and Unit Tests

Here is the UML class diagram for the JPA DAO and the Unit Tests.

Better Web App

Watch the following video, get a feeling on what is better to be used to develop web application.
better-web-app.mov (video/quicktime Object)

Oracle Lite dmagent managing olite.key

While dmagent running, it may hold a copy of the olite.key in the memory. So if you change the olite.key in the file system level, it may not be picked up during next action.
Also, the dmagent has the ability to download the new olite.key as it needs, but you may see the username/password challenge window, if you are sure the username/password is correct, just simply click OK, let it try with the new olite.key downloaded by the dmagent. Surprise, it succeeded!

Creating platform specific apps for .Net development

Creating platform specific apps

Most of the language compilers (like C#) now offer a /platform switch. By using this switch, developers can create binaries targeted for a specific platform type or binaries that are platform agnostic. There are four types of binaries that are emitted

· anycpu – platform agnostic

· x86 – 32-bit platform specific

· x64 – x64 platform specific

· itanium – IA platform specific

Please refer to Moving from 32-bit to 64-bit application development on .NET Framework.

How to view the corflags(ILONLY, 32BitRequired etc.) of a PE image?
corflags.exe Core32.dll

bash shortcuts

Here is a list of bash shortcuts, credit to this blog.
alt-f -- move forward one word
alt-b -- move backwards one word
ctrl-a -- takes you to the begining of the command you are currently typing.
ctrl-b -- move backwards one character
ctrl-c -- kills the current command or process.
ctrl-d -- kills the shell.
ctrl-e -- takes you to the end of the command you are currently typing in.
ctrl-f -- move forward one character
ctrl-h -- deletes one letter at a time from the command you are typing in.
ctrl-l -- clear screen
ctrl-r -- does a search in the previously given commands so that you don't have to repeat long command.
ctrl-u -- clears the typing before the hotkey.
ctrl-z -- puts the currently running process in background
esc-b -- takes you back by one word while typing a command.
esc-p -- like ctrl-r lets you search through the previously given commands.
esc-. -- gives the last command you typed.

Another good reference.
Here "2T" means Press TAB twice

$ 2T - All available commands(common)
$ (string)2T - All available commands starting with (string)
$ /2T - Entire directory structure including Hidden one
$ 2T - Only Sub Dirs inside including Hidden one
$ *2T - Only Sub Dirs inside without Hidden one
$ ~2T - All Present Users on system from "/etc/passwd"
$ $2T - All Sys variables
$ @2T - Entries from "/etc/hosts"
$ =2T - Output like ls or dir