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Performance Tuning for SAP R/3 Copyright 1997 IEEE. Personal use ...

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Obviously very good performance is crucial for users of SAP R/3. ... Unfortunately tuning the performance of an SAP R/3 system is very difficult because ...

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Performance Tuning for SAP R/3 Copyright 1997 IEEE. Personal use of this material isPage 1Performance Tuning for SAP R/3Copyright 1997 IEEE. Personal use of this material ispermitted. However permission to reprint/republishthis material for advertising or promotional purposesor for creating new collective works for resale orredistribution to servers or lists or to reuse anycopyrighted component of this work in other worksmust be obtained from the IEEE.Bulletin of the IEEE Computer Society TechnicalCommittee on Data EngineeringAlfons KemperDonald KossmannBernhard ZellerUniversity of Passau Germanyhttp://www.db.fmi.unipassau.de1 IntroductionSAP R/3 is the most successful product for enterprise resource planning (ERP). It is used by mostFortune 500 companies and comprises modules for human resource management accounting logisticsetc. Like many other application systems SAP R/3 is based on a commercial relational database systemwhich is used to store all R/3 related data; e.g. a companys sales information. When installing R/3 itis possible to choose among several commercial systems; e.g. Adabas D IBM UDB Informix AdaptiveServer Microsoft SQL Server or Oracle 8.Obviously very good performance is crucial for users of SAP R/3. In many companies transactionsof thousands of users must be processed concurrently by SAP R/3 and the underlying database system.In addition the size of the database can become very large. Today the largest SAP R/3 databases haveabout 1.5 terabytes; in a few years these databases are likely to grow several times that size as a resultof new R/3 releases and developments; e.g. component architecture or SAPs business informationwarehouse. Unfortunately tuning the performance of an SAP R/3 system is very difficult becauseboth the R/3 application system and the underlying database system must be tuned. Furthermorethe performance of an R/3 system can suffer because parts of R/3 were designed and implemented in theearly eighties at a time when commercial da ...

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