2. Oklahoma Department of Human Services Child Welfare Database Migration

3. Or

4. How to Drive Oneself Crazy and Still Have Fun

5. The KIDS System as of Autumn 2000 Powerbuilder thick client with Oracle backend HP9000 T-500 6 90 Mhz PA-RISC 7100 CPUs Hard drives at the end of support life SCSI attached RAID HP-UX 10.20 Oracle 7.3.4 Supports 600+ users Token Ring

6. The Original Plan Upgrade hardware to modern HP hardware Dual processor PA-RISC 8500 Failover system (MC/Serviceguard) Fibre attached SAN (va7100) Bonded 100mb ethernet

7. HP Positives Uptime measured at 99.999% Increased disk throughput Increased processing capacity 64 bit operating system

8. HP Negatives Expensive support Idle CPU cycles Multiple hardware platforms Multiple DASD platforms

9. An Unrelated Project? It’s time to upgrade that ole mainframe thing-a-majig

10. IBM Makes a Proposal Shhhh! Chris likes it!

11. Linux?

12. IBM’s Proposal Apply money allocated to KIDS upgrade to z/900 purchase Purchase two IFL’s for z/VM and Linux Offer a lot of help

13. IBM Positives Consolidation of hardware Single source for support Hardware reliability Utilize existing storage infrastructure z/VM allows for better resource management Leverage tight pocketbook

14. IBM Negatives Oracle RDBMS not yet available for production Linux relatively unproven in mission critical environments No failover capability Scalability concerns Management uneducated about Linux

15. The Decision...

16. Is Linux

17. Issues encountered Database corruption 2000/4000 character field 31 bit 2 gigabyte limit Online backup solution Sysadmin education User education Management education

18. Positives encountered Oracle is Oracle Applicability of existing Unix knowledge Linux is configured more securely Management becomes more open to Linux solutions Fundamental changes in recovery and security concepts

19. Two years later...

20. Final migration scheduled for April 10, 2004

21. After the Migration z/VM 4.4 Oracle 10g Availability –RAC –Response