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Quelle Neckermann - Germany Reiner Zimmermann Product Management – Oracle DWH Development - +41 79 237-7443.

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Presentation on theme: "Quelle Neckermann - Germany Reiner Zimmermann Product Management – Oracle DWH Development - +41 79 237-7443."— Presentation transcript:

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2 Quelle Neckermann - Germany Reiner Zimmermann Product Management – Oracle DWH Development

3 Company Background DWH usage and applications DWH Architecture SLA Current Activities Presentation Agenda

4 Company Background

5 Karstadt – Quelle Holding Revenue Total : 15,3 Mrd. Mailorder : 8,0 Mrd. Employees : Mailorder : Facts (2003)

6 Quelle - Mailorder Kennzahlen (2002) Nr. 1 mailorder company in germany 30% market share in germany 140 daughter companies present in 22 european countries stationary, supporting units/shops in europe 65 mio shipments / year 38 mio main catalogues p. a. 95% brand knowledge Facts (2003) Two strong brands

7 DWH usage and applications

8 Usage of the DWH Source Systems Granular Data Warehouse MIS, Reporting CRM-Actions Campagn- Management Data Mining, Customer Scoring, Analysis 30% Computing Power

9 DWH processes Diversification of marketing material MIS Business Intelligence Controlling Complaints Call-Center Service Internet Complaints Call-Center Service Internet CRM Analytic CRM Product- Management Sales MIS Business Intelligence Controlling CRM Operative CRM Granular Data Warehouse Collection, Consolidation and Storage of all customer related transactions and information allocation of targeted information to steer the CRM processes add Product – Sales Information (analytical CRM)

10 DWH architecture

11 ... once upon a time.... a DWH platform was seached... Benchmark of several hardware vendors : - HP - Sun - Bull - Tandem - IBM and the winner was : SUN E10k EMC

12 ... some years later.... a new DWH platform was seached with a better price performance ratio and the winner was : HP Superdome HP EVA SAN

13 ... last year.... The system was too expensive – but the vendor was OK... So they evaluated alternatives Oracle RAC was presented The Amazon case was presented... and finally the solution was made... To replace the HP Superdomes with a Oracle RAC – Blade infrastructure

14 Current DWH Infrastructure Mandantes/companies: Quelle neckermann.de Mode und Preis Madeleine Elegance (incl. Bogner, …) Quelle-Gruppen-DWH (Peter Hahn, KQV, …) Datenbases/Filesystems: DBQDWH: Quelle, Mode und Preis, Madeleine, Elegance Quelle goup-DWH ca. 5,8 TB, ca. 600 User DBNDWH: neckermann.de ca. 3,1 TB, ca. 70 User DBKTO: Reporting – Customers - Finance Q/N ca. 1,4 TB, ca. 120 User DBMA: Quelle foreign companies ca. 0,4 TB, ca. 130 User Filesystem: ca. 2,5 TB

15 Testsystem on 1 node ENQDWH ENKTO, ENMA ENSVSDWH Cluster Distribution of DWH Services DB-Structur on 2 nodes IAS/OID/SSO OS-Struktur on ~11 Knoten NFS, Filesystem TWS, SSH/SFTP XCOMM Datenbase on 11 nodes DBQDWH DBNDWH DBKTO DBMA Clusterware

16 Cluster-Configuration (Standard) Server DBMA Quelle neckermann.de Server DBKTO ne.de RAC Quelle RAC Quelle RAC Quelle RAC Quelle RAC Fibre-Channel Database DBMA and DBKTO IAS [Discoverer, OID (SSO / LDAP)] Periphere Software (XCOMM, SFTP, SSH,…) 3x EVA discs á146GB Test Loadbalancer Quelle RAC Quelle RAC Quelle RAC ne.de RAC Je 4x Xeon64/3,66GHz 16/32 GB Mem.

17 Cluster-Re-Configuration (Workload/Peak Mgmt) Server DBMA Server DBKTO ne.de RAC Quelle RAC Quelle RAC Loadbalancer Quelle RAC Quelle RAC Quelle RAC ne.de RAC ne.de RAC ne.de RAC ne.de RAC Server DBMA Server DBKTO ne.de RAC Quelle RAC Quelle RAC Quelle RAC Quelle RAC Test Loadbalancer Quelle RAC Quelle RAC Quelle RAC ne.de RAC

18 Cluster-Re-Configuration (Testing) Server DBMA Server DBKTO ne.de RAC Quelle RAC Quelle RAC Quelle RAC Quelle RAC Test Loadbalancer Quelle RAC Quelle RAC Quelle RAC ne.de RAC Server DBMA Server DBKTO ne.de RAC Quelle RAC Quelle RAC Quelle RAC Quelle RAC Test Loadbalancer Test ne.de RAC

19 Hardware Architecture & Cost (Capex) Nodes : 12x DL580 – each 15k EUR = EUR (32MB RAM – Xeon Ghz) Infrastructure / Switches / FC = 35k EUR (2 GB / I/O Throughput) Disc Subsystem 3x EVA8000 – each 250k = 750k (17 TB Net capacity / Raid 1) Total EUR

20 Software Architecture OS : Suse Linux 64bit Disk Layout : Oracle ASM DB – Software : Oracle 10g Backup & Recovery : Oracle RMAN / ILM (planned) System Mgmt : OEM – Diag / Tuning / Change / Conf DB-Options : Partitioning Option Real Application Cluster ETL Option (OWB)

21 Goal of a (joined) Cluster Conceptual Goals Consolidation of all Marketing-DWHs of mail-order devision Building one platform for DWH-Applications Technological Goals Basis for scalability of computing power and storage without complete change of HW / SAN - normal growth (add now nodes / add additional storage) - cope with short-term peaks through load balancing and reconfiguration of existing ressources. Increase availability through fail-over scenarios Increase availability through rolling upgrade of software Ressource sharing of DB-near services (IAS – SSO – Applications) Speed up system – 3x faster

22 Goal of a (joined) Cluster Commercial Goals Use of cheap HW – new Hardware ½ price BUT : watch out for Outsourcing concepts : (ex. Adidas) - mostly no cost savings for the application owner - Existing contacts in place - Talk with the outsources

23 DWH SLAs

24 Backup / Recovery Concept (current) Daily full backup on Tape using Oracle RMAN Backup parallelized on 4 steams/nodes duration 3.5 h Disaster Recovery Scenario – full restore from tape

25 Administration of the DWH 3 shifts / 3 DBA per shift managing 100 Oracle DBs DWH administration : - System / DB admin ~ 4 month / year ~ 0.3 FTE - Disk admin ~ 1 month / year ~ 0.1 FTE - B/R admin ~ 1 month / year ~ 0.1 FTE Total DWH admin 0.5 FTE

26 Volume evolution & influence of Administration no visible influence tables are range partitioned – hence query time is not influenced old data / partitions are compressed – hence even positive effect on performance

27 Downtime management current SLAs allow 2 days downtime max planned downtime since cluster – 4h max unplanned downtime since cluster – 0h Upgrade clusterware and patches – rolling upgrades

28 Current Activities

29 customer Story w/ German marketing technical story for DOAG / BI Magazine … EMEA Terabyte Club - Bologna

30 Dr. Gernot Schreib Head DWH – Quelle AG Norbert Gösswein Head DB Management – AtosOrigin AG Herbert Rossgoderer DWH Consultant – Oracle Germany Reiner Zimmermann Product Manager – Oracle DWH Development More Information

31 Business factsTechnology facts Quelle AG is the largest mail-order company in Germany with a market share of 30% and 142 subsidaries. Quelle has presents in 22 european countries with mail-order supporting affilates Quelle AG send 65 Mio orders and around 38 Mio main catalogues to clients every year and around 140 Million special catalogues. Quelle has a 95% brand awareness in germany. Migration from Sun E10k / HP Superdome / HP DL node RAC cluster - HP DL 580 Storage : HP, 3x EVA 8000 / 249 discs a 146 GB Quelle AG - Snapshot Business Solution - Management Reporting (MIS) - Oracle OLAP & Discoverer technology - around 300 KPI within 10 Dimensions users - Analytical CRM - Time Series analysis - ABC-Analysis - Campaign-Controlling - Retour-analysis - Market Basket Analysis - Kredit – Risk - Fraud Detection Departments : Marketing / Sales / Product Management Controlling / Call Center Used Software Oracle 10g R2 RAC / Partitioning / Express ASM OWB Discoverer / OFA / Reports Suse – Linux > 600 users

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