Mysql 5.0 on solaris..

I have just started exploring Mysql...i am from db2 background.

How do i monitor database ...
in db2 i can use database snapshots to see the bufferpool usage , lock list usage , sort heap usage etc ..
I can see things like commited stats , inserts , updates ..trasactions ..what not every thing...

and also by using list applications , i can list all the connecttion to the database..

How do i perform similar steps in Mysql....