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What Is This Guidebook About?........................................................................ xxiiWho Should Read This Book?........................................................................... xxiiPrerequisites.......................................................................................................... xxiiiUser ........................................................................................................................ xxiiiSystem.................................................................................................................... xxivHow to Use This Guidebook .............................................................................. xxvOrganization ............................................................................................................xxvWhat’s New .......................................................................................................... xxvContent ....................................................................................................................xxvConventions........................................................................................................... xxviSpecial Icons...................................................................................................... xxvii Overview............................................................................................................... 1–2Roles of an R/3 System Administrator.............................................................. 1–2Within R/3 .............................................................................................................. 1–2External to R/3....................................................................................................... 1–3Traits of an R/3 System Administrator.............................................................. 1–4R/3 System Guidelines........................................................................................ 1–4Protect the System ................................................................................................ 1–5Do Not Be Afraid to Ask for Help........................................................................... 1–5Network with Other Customers and Consultants.................................................. 1–6Keep It Short and Simple (KISS)........................................................................... 1–7Keep Proper Documentation................................................................................. 1–7Use Checklists....................................................................................................... 1–8Use the Appropriate Tool for the Job .................................................................... 1–9Perform Preventive Maintenance.......................................................................... 1–9Do Not Change What You Do Not Have To........................................................ 1–10Do Not Make System Changes During Critical Periods...................................... 1–11Do Not Allow Direct Database Access................................................................ 1–12Keep all Non-SAP Activity Off the R/3 Servers................................................... 1–12Minimize Single Points of Failure........................................................................ 1–13Corollaries to Murphy’s Law ............................................................................ 1–13Special Definitions ............................................................................................ 1–14Database server ................................................................................................... 1–14Application server ................................................................................................. 1–14Instance ................................................................................................................ 1–14System.................................................................................................................. 1–14System Administration Made Easyv