Great post from Pierre-Hugues Charbonneau: 8 Ways to Improve Your Java EE Support Skills
My favorite (funny) quote from the article:
One of the great things about Java EE production support is the multiple learning opportunities you are exposed to.
One of the many important tips and points made in the article includes this one in regards to administrators general reluctance when making production changes:
Finally, if you feel that you are lacking technical knowledge to implement the changes, simply say it and ask for another more experienced team member to shadow your work.