Installing and Upgrading the Database at Caltech
Whole federation at CERN ~32 GBytes
Each database ~200 MBytes in size
Attach each one in turn to the Caltech Federation:
- ooattachdb takes ~2 minutes per database
Upgrade the Schema
- Run on Kayak, database on Sun
- Rename “ECEnergyMap” objects to “OldECEnergyMap”
- Introduce new “ECEnergyMap” class
- Run through whole Federation
- Find OldECEnergyMap objects
- Create new ECEnergyMap for each one
- Copy data members
- Delete OldECEnergyMap objects
- Takes ages : network bound
Would like to do all this on the Exemplar ...