Converting mpc to wav

Today I was confronted with some mpc files which I needed to convert into wav files. There is a tool called mpcdec but it has to be compiled first. I have tested the following instruction successfully on my Slackware 14 machine (64bit).
To start create a directory where you can store the sources and change into it: 

su: cannot set user id: Resource temporarily unavailable

Today I had a customer complaining about his DB that nobody can login anymore. The number of max sessions (in the DB) was set to 4096 and there were about 2048 current seesion on the DB. So, what was wrong?
I decided to login as root into the DB server which worked wihtout any issue. The system it self was OK, enough memory free, no filled volumes etc. Then I tried to switch to the oracle user: 

hpacucli

Just some quick command examples for checking the status of a HP controller, drives etc. Start with finding the binary:

# find /opt -name "hpacucli" -type f
/opt/compaq/hpacucli/bld/hpacucli