Hello,

I would like to share my bad and good experience in application's design and planning.

1)

Remember, if you work with WEB/EJB container's objects, never make assumptions.

This stuff always tends to behave against your common sense.

As example:

I was getting mad yesterday trying to figure out what happened to my SUN-JAVA 6 installation on my Ubuntu equipped laptop after the upgrade to the last and best Ubuntu version 10.04, so called "Lucid Lynx".

The desktop itself is wonderful. Most beautiful thing I've ever seen. Really.

But suddenly all my java stuff stopped: eclipse, maven, ant, everything, that

helped me to cope without marriage so far...just refused to work.

And you know what? Try to guess...

Ubuntu DELETED (ERASED, REMOVED) my SUN java 6!!!!!!!!!!!!!!!!!!!!!!!

Ok, here we go, nobody is interested in the garbage collection, who, for the Pointer sake, needs that GC?

 That is the question.

That was pretty much my mode and mood when I started a new book of Steven Haines “Pro Java EE 5 Performance Management and Optimization”.

And reality p u n c h e d !  me right in my face dear buddies…

It occurred, that default GC parameters are never, almost never set up right and optimal in enterprise large boxes!