Lori Vanourek Product Management SAP NetWeaver / BI. Mike Eacrett SAP NetWeaver RIG - BI

Transcription

1 Lori Vanourek Product Management SAP NetWeaver BI Mike Eacrett SAP NetWeaver RIG - BI

2 Content Overview Query Performance OLAP Cache Pre-Calculation Load Performance

3 Performance Tuning OLTP Systems Application Development and performance tuning separated Performance tuning by basis experts base Application OLTP SAP BW Performance Tuning as holistic process over application design and database configuration Performance is designed into an SAP BW solution!!! Performance Tuning base Application SAP BW Performance Tuning

4 Basic rules for performance optimization:! "!!

5 #!" $ % & "% #!#! ' %' % (#!) *!# +*,

6 " It is important to use the right objects into your DW model ODS Objects and InfoCubes are specifically designed for certain roles! Overview of the EDW layers Operational Store Operational Reporting Near Real-Time Volatile Granular Built with ODS Objects & &- Persistent Storage Area Staging Raw data Built with PSA objects PSA Warehouse Non-volatile Granular Integrated Historical foundation Built with ODS Objects ODS Object & &- Multidimensional Models Multidimensional analysis Aggregated view Integrated Built with InfoCubes

7 Content Overview Query Performance OLAP Cache Pre-Calculation Load Performance

8 " $.!.&0 Which component contributes most? Check these points Tools base base Model Model Query Query Definition Definition OLAP OLAP Cache Cache Pre-Calculated Pre-Calculated Web Web Templates Templates Compressing Compressing Indices Indices DB DB Statistics Statistics DB DB and and basis basis (Buffer) (Buffer) Parameter Parameter SQL SQL Trace Trace (ST05) (ST05) RSRV RSRV RSRT, RSRT, RSRTRACE RSRTRACE ST03 ST03 Technical Technical Content Content OLAP OLAP Model Model Query Query Definition Definition (including (including OLAP OLAP features) features) OLAP OLAP Cache Cache Virtual Virtual Key Key Figures Figures Characteristics Characteristics Authorizations Authorizations RSRT, RSRT, RSRTRACE RSRTRACE SQL SQL Trace Trace (ST05) (ST05) ABAP ABAP Trace Trace (SE30) (SE30) Frontend Frontend Network Network WAN WAN and and BEx BEx Client Client Hardware Hardware VBA VBA Java Java Documents Documents Formatting Formatting ODBO ODBO 3 3 rd party party IEMON IEMON RSRT, RSRT, RSRTRACE RSRTRACE

9 &% % Portal iview Cache Pre-Calculation Offline Analysis OLAP Cache Reuse InfoCubes

10 Definition Materialization of aggregated subsets of InfoCube fact table data Independent structures where summary data is stored within separate, transparent InfoCubes Benefits Transparency: Users do not notice if aggregate is hit or not Improved query performance by reducing the amount of data to be read from DB can be created Only on top of basic InfoCubes For dimension characteristics For navigational attributes On hierarchy levels Using time-dependent navigational attributes (as of SAP BW x) Using hierarchy levels where the structure is timedependent (as of SAP BW x) InfoCube Note: can improve query performance considerably, but keep in mind that they also impact the load performance.

11 &% " Global OLAP Cache in SAP BW x Session- and user-independent Stores Query Results In application buffer In cluster table or flat file (highly compressed) Benefit Complete query results with virtually no DB table access as of the second call of the query Re-use For equal queries or subsets of cached query results Invalidation OLAP Cache and actual InfoProvider data always in-sync Invalidation of cache entries e.g. after transaction data load, master data loadchange run, meta data change Strategy Warm-up OLAP Cache via reporting agentinformation Broadcasting

12 Content Overview Query Performance OLAP Cache Pre-Calculation Load Performance

13 " $. %!.&0 Which component contributes most? Extraction Extraction Technical Technical Content, Content, Load Load Monitor Monitor Transfer Transfer Load Load Into Into PSA PSA Check these points Customer Customer Exits Exits Resource Resource Utilization Utilization Load Load Balancing Balancing Package Package Size Size Indices Indices on on tables tables Flat Flat File File format format Content Content vs. vs. generic generic extractor extractor Resource Resource Contraint Contraint CPU CPU Memory Memory Bottleneck Bottleneck Network Network Application Application Buffer Buffer Synchronization Synchronization IO IO Contention Contention PSA PSA Partition Partition Size Size Tools Extractor Extractor Checker Checker (RSA3), (RSA3), ABAP ABAP Trace Trace (SE30), (SE30), SQL SQL Trace Trace (ST05) (ST05) SM50 SM50 SQL SQL Trace Trace (ST05) (ST05) OS OS Monitor Monitor (ST06) (ST06) OS OS Monitor Monitor (ST06) (ST06) DB DB Monitor Monitor (ST04) (ST04)

14 " $. %!.&0 Which component contributes most? Technical Technical Content, Content, Load Load Monitor Monitor Transfer Transfer Rules Rules Update Update Rules Rules Master Master Load Load Into Into Targets Targets InfoCubes InfoCubes ODS ODS Objects Objects Check these points Tools Transformation Transformation Rules Rules ABAP ABAP Coding Coding Transformation Transformation Library Library Formulas Formulas Debugger Debugger within within Monitor Monitor ABAP ABAP Trace Trace (SE30), (SE30), SQL SQL Trace Trace (ST05) (ST05) Buffering Buffering Number Number Ranges Ranges Change Change Run Run Roll-up Roll-up Change Change Run Run Compression Compression Indices Indices Load Load Master Master before before Transaction Transaction Buffering Buffering Number Number Ranges Ranges SQL SQL Trace Trace (ST05) (ST05) Parallel Parallel ODS ODS activation activation Unique Unique Records Records Flag Flag BEx BEx Reporting Reporting Indices Indices

15 Design your Model Prudently and and Consider Regular Reviews Use Use and and Design Them Carefully Compress Regularly Use Use customer- oriented reporting & analysis features

16 ,"' 30* (Alias BW ) > Services and Implementation # $ Use ALIAS: BW at See Performance Folder &

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