I have been using the product for several years now. I have been very satisfied with it and the way it has integrated into many of the solutions that we have placed in service. Suse Linux (SLES) is a mature, solid Linux offering. I recommend that companies, which have not reviewed its potential, take a second look.
The Oracle database and application server, and the Orarun SuSE package made deploying those products so easy. It even allowed us to move most of the Oracle software configuration effort away from us to DBAs and application support personnel.
I do not know if YaST or Orarun made the most impact in our organization. Both made life a lot easier. YaST just made administration a breeze.
Any company looking to standardize on a Linux platform should seriously review this product. It has served me well for many years.
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