SAP applications run on Linux and in particular they run on SUSE Linux Enterprise Server (SLES). SAP and SUSE have a long standing partnership, and there are a number of SAP applications, where SLES is the only operating system that is certified by SAP.
SAP doesn’t run a plain vanilla version of SLES, but rather uses a special version called SUSE Linux Enterprise Server for SAP Applications. SUSE has updated that platform with a new release which brings the platform up to the same service pack level as the rest of SUSE’s customer base. SLES SP2was first released in March of this year, with a Linux 3.0 kernel and the next generation Btrfs filesystem.