Invalid Object Compilation

I was working on application, and every time when I release some new versions in UAT or Production, I have to compile all the invalid objects one by one.

I google for the command to compile all the invalid objects in one go. After spending quite good time on google, I found out this

exec sys.utl_recomp.recomp_serial();

Hope, this will be useful to some and save their time of searching.