1. Towards continuous integration: Automated Oracle database testing with capture and replay
Emil Pilecki

2. Oracle databases at CERN
Around 100 databases on 200 hosts
Major database upgrade every 3rd year
Quarterly and one-off patches, parameter changes
New kernel, OS packages, parameters… (Agile)

3. Database testing – the past
In the past:
Manual testing done by application developers and database users, but…

4. Database testing – the future
In the future:
Automate!!!
RAT
RAT = (Oracle) Real Application Testing
allows:
Automated testing of Oracle databases
complementary to manual

5. What is RAT? capture workload replay workload rewind production
test replica
replay workload
test replica
rewind

6. Oracle 11g/12c upgrade testing
restore
analyze
upgrade
backup
replay report
production
/ replica
capture
replay
replica
RAT workload
RAT workload
~20 databases tested
Several bugs and compatibility issues detected

7. Continuous integration testing
baseline
timeline
replay 1
replay 2
replay 3
replay 4
replay 5
production
alarm
alarm
Regular replays compared with baseline
Spot performance degradation and new errors

8. Thank you for your attention!