1 / 29

Seamless Upgrade to Oracle 10g: Eliminate Downtime Effectively

Learn strategic techniques for migrating to Oracle 10g without downtime, ensuring data integrity and failback solutions, evaluated migration technologies, and leveraging GoldenGate TDM.

georginam
Download Presentation

Seamless Upgrade to Oracle 10g: Eliminate Downtime Effectively

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Oracle 8i or 9i to version 10g – Upgrading or Migrating with Eliminated Downtime GCOUG Meeting, October 17, 2007 Chuck Duncan, Sr. Solutions Consultant

  2. Maintaining SLA during planned outage Revenue Impact Customer Expectations Interdependencies, Integration Synchronization issues Incremental data movement Source database impact Data issues Instantiating Terabytes/Petabytes Staging areas Change Management Special Handling Fail-back strategy System/Application verification Continued data growth Challenges for Major Upgrade/Migration Projects

  3. Export/Import Flat files/SQL*Loader Data Pump Synchronous replication Backup/Recovery Transportable tablespaces Cross-platform transportable tablespaces Standby databases Oracle Streams Transactional Data Management Possible Technologies Evaluated for Oracle Migrations Non Mission-Critical Systems High Availability Systems

  4. Assume a moderate to significant amount of planned downtime Significant overhead on the source database No ongoing management of transactions Complex, error prone, unmanageable Migration time dependent on size of data No manageable failback strategy No real-time data verification strategy Technology Choices for Oracle Migrations: Considerations • Export/Import • Flat files/SQL*Loader • Data Pump • Synchronous replication • Backup/Recovery Non Mission-Critical Systems

  5. Transportable Tablespaces No updates possible No incremental solution No failback solution No 9i-10g Cross Platform Standby Databases (logical) No rolling upgrade in 9i Cannot be used for heterogeneous migration/upgrade No real-time verification solution Streams No rolling upgrade in 9i Limited datatype support (e.g. no LONG support in 9i) No real-time verification solution Heterogeneity very complex Technology Choices for Oracle Migrations: Considerations • Transportable tablespaces • Cross-platform transportable tablespaces • Standby databases • Oracle Streams • Transactional Data Management High Availability Systems

  6. Weeks/Days Hours/Minutes Minutes/Seconds Downtime Available Solutions/Techniques & Tradeoffs

  7. Real-time capture, routing, transformation, delivery, and verification of data transactions across heterogeneous environments with low impact. Transactional Data Management TDM is: • Real time Moves data with sub-second latency • Heterogeneous Moves transactions across different databases and platforms • Transactional Maintains transaction integrity GoldenGate further differentiates on: • Performance Handles thousands of transactions per second with very low overhead • Extensibility & Flexibility Open architecture, modularity enables wide range of solutions • Reliability Supports continuous operations and availability

  8. Capture Deliver Source Trail Target Trail Deliver Capture Target Trail Source Trail Bi-directional GoldenGate TDM for Oracle Database Capture Capture: Committed changes are captured (and can be filtered) as they occur by reading the transaction logs. Trail files: Universal data format enables heterogeneity. Route: No distance constraints via TCP/IP. Compression & encryption. Delivery: Applies transactional data with guaranteed integrity. redo log LAN / WAN / Internet Oracle Database Target Database

  9. Oracle 8i or 9i to 10g Upgrades/Migrations • What TDM offers: • Minimal impact and continuous availability during the project • Technology solution for eliminating database downtime • Improved capabilities for data integrity, accuracy • Fail-back solution in the event of unexpected issues/downtime • Proven – with customers in production

  10. 3,4 1 2 No Downtime Migration: 9i  10g Cross-Platform 9i Clone  10g Solaris 9i Solaris • Start GoldenGate TDM’s Capture process • Set up Clone database, then Upgrade to 10g • Cross platform transportable tablespaces metadata export • Use a full database NOROWS export (Views, Packages, etc)

  11. 3,4 6,7 1 2 5 No Downtime Migration: 9i  10g Cross-Platform 9i Clone  10g Solaris 9i Solaris 10g Linux • Start GoldenGate TDM’s Capture process • Set up Clone database, then Upgrade to 10g • Cross platform transportable tablespaces metadata export • Use a full database NOROWS export (Views, Packages, etc) • Set up a new 10g vanilla target • Cross platform transportable tablespaces metadata import • Full import with IGNORE option

  12. 3,4 6,7 1 2 5 8 No Downtime Migration: 9i  10g Cross-Platform 9i Clone  10g Solaris 9i Solaris 10g Linux • Start GoldenGate TDM’s Capture process • Set up Clone database, then Upgrade to 10g • Cross platform transportable tablespaces metadata export • Use a full database NOROWS export (Views, Packages, etc) • Set up a new 10g vanilla target • Cross platform transportable tablespaces metadata import • Full import with IGNORE option • Start GoldenGate TDM Apply process at target • **SWITCHOVER** (not depicted)

  13. 3,4 6,7 10 11 1 5 8 2 No Downtime Migration: 9i  10g Cross-Platform 9i Clone  10g Solaris 9i Solaris Failback contingency 10g Linux • Start GoldenGate TDM’s Capture process • Set up Clone database, then Upgrade to 10g • Cross platform transportable tablespaces metadata export • Use a full database NOROWS export (Views, Packages, etc) • Set up a new 10g vanilla target • Cross platform transportable tablespaces metadata import • Full import with IGNORE option • Start GoldenGate TDM Apply process at target • Verify data (optional) • **SWITCHOVER** (not depicted) • Start TDM Capture at target (new source) • Start TDM Apply at target (old source)

  14. TDM – in Summary

  15. GoldenGate Major Customer Examples • Database and/or Platform Migrations in all-Oracle environments: • Overstock.com: Oracle 9i on Linux  Oracle 10g on AIX • HP internal testing: Oracle 9i on HP Tru64  Oracle 9i on HP UX • Cerner’s Millennium Application: Oracle 9i on OpenVMS  Oracle 10g on HP UX or AIX • Migrations from non-Oracle to Oracle database environments: • Sabre Holdings: HP Nonstop  Oracle • Siebel on Demand: IBM DB2  Oracle • Integrating non-Oracle data into Oracle BI systems: • Dell: OLTP on HP NonStop  Oracle Data Warehouse • AMD: IBM DB2  Oracle reporting database

  16. GoldenGate’s Partnership with Oracle: Highlights • Oracle Certified Partner (worldwide) since fall 2006 • Oracle Database 11g – beta test partner • Oracle Modernization Alliance – member partner (July 2007) • Siebel CRM - GoldenGate TDM has Validated Integration • Oracle Data Integrator – Proven solutions for real-time data integration and warehousing

  17. High Availability & Disaster Tolerance Unplanned Outages: Live (Hot) Standby “Planned Outages”: Oracle database upgrades & migrations Application, platform migrations Non-Oracle to Oracle migrations Performance & Transaction Load Balancing: Active-Active Real-Time Data Integration Real-Time Data Warehousing (with transformation support) Offload Live “Real-Time” Reporting Data Consolidation – Oracle Data Hubs Solution Focus Areas for Oracle Customers

  18. GoldenGate TDM: Heterogeneity Supports Applications Running On…

  19. TDM Key Architecture Features • Log-based extraction • Reads transaction logs directly, enabling advanced changed data capture with high performance and minimum impact to source systems. • Routing, flexible topologies • Enables users to support various topologies, such as one-to-one, many-to-one, one-to-many, many-to-many, and bi-directional movement of data. • Dynamic rollback and selective recovery • Point-in-time and selective recovery. • Data filtering and transformations • Table and row filtering can be applied based on user-defined criteria. • Users can map, enrich, translate, and transform transactional data in real time as it is captured or applied to target systems. • Archival and Audit Capabilities • Customization: User Exits, Stored Procedures and Queries, Macros • Compression and Encryption

  20. GoldenGate Veridata™ • “GoldenGate Veridata is a high-speed, low impact data comparison solution that identifies and reports data discrepancies between two databases, without interrupting those systems or the business processes they support.” • Benefits: • Reduce risk exposure and act on data discrepancies sooner • Speed and simplify IT work in comparing data sources • No disruption to business systems

  21. GoldenGate Veridata™ • Key features: • Support for large data volumes • Comparisons ran while data sources are kept online • Flexible reporting for discrepancy analysis • Unparalleled speed and efficiency • Selective comparison options • Oracle to Oracle • HP NonStop to NonStop • Enscribe & SQL/MP

  22. GoldenGate Veridata: How it Works • The user chooses tables or files on the source and target databases • The comparison is initiated from the GUI, command line or batch • As the databases continue to change, GoldenGate Veridata reports: • Persistent discrepancies • In-flight data discrepancies (user configurable)

  23. GoldenGate Veridata: Architectural Advantages • Initial read and local conversion to a digital signature: • Maximum speed • Minimal network load • Optional unstructured read and server side sorting • Two step comparison cycle allows for: • Operation on replicated production system • intelligent identification of “In flight” records • Extremely fast! • In testing on moderate hardware 25,000 rows/sec • No interruption of service

  24. Thank you. cduncan@goldengate.com www.goldengate.com

  25. Case Study: Overstock.comMultiple Enterprise Solutions Drive Revenue, Enhanced BI High Availability & Real-Time Data Warehousing • Business Challenges: • Minimize downtime for e-commerce systems during database & platform migration • Improve Business Intelligence by reducing data latency for the data warehouse • Gain a single view of the customer to better understand purchasing habits, refine marketing campaigns to be more targeted, and ultimately drive more business • Implement a reliable, in-house disaster recovery solution GoldenGate Solution: • Zero downtime during migration project for 3 business-critical e-commerce systems • Enabled an operational Teradata EDW through real-time data integration from e-commerce systems • High Availability for Teradata to balance transaction load and enable failover solution Oracle 9i  Oracle 10g Linux AIX Oracle 9i  Oracle 10g Linux AIX Oracle 9i  Oracle 10g Linux AIX Enterprise Data Warehouse “Accessing the data in real time using GoldenGate we can immediately see if we’re profitable and if our business processes are working.” - Sam Peterson, SVP Technology, Overstock.com

  26. Addressing Failback • Stop application at new Primary (10g) • Real-time TDM synchronization ensures old primary is synchronized • Switchover Application to old primary (9i) • Start Primary database 9i Solaris 10g Linux

  27. Mission-Critical Systems Real-Time Access Availability: the degree to which information can be instantly accessed. Real-Time Information Integration: the process of combining data from different sources to provide a unified view. Our Business We enable real-time, continuous movement of transactional data across Operational and Analytical business systems. Real-Time Access to Real-Time Information

  28. Key GoldenGate Customers… Banking and Finance Healthcare Telecommunications and Service Operators Retail and e-Business Manufacturing & Supply Chain Travel & Hospitality Government & Public Sector

  29. Oracle Database Support • GoldenGate currently has GA support for real-time, continuous data capture from Oracle transaction logs: • Oracle 8i, 9i, 10g RAC & ASM • Oracle Database 11g – in progress • GoldenGate is a beta tester • Product roadmap and engineering underway • Internal experts attending training • Why GoldenGate over Oracle native replication? • Heterogeneity • Performance, volumes/scalability, and IT impact • Implementation and manageability • Solutions and features

More Related