Ingres 9.2 Migration Guide - Actian

Testing Applications and ProceduresTesting Applications and ProceduresIn the new installation, you should test the following areas:• Applications• Performance• System administrator proceduresTesting should not be random. You should have a test plan that includes theexpected results. For example, if a query does mathematical calculationsagainst a data set, the result should be manually computed so that the actualresults can be verified against the expected results. Comparing the resultsfrom the previous version of Ingres with the new version of Ingres may givethe same answer, but both could be wrong.Application TestingWhen upgrading, changes should be kept to a minimum. It is not sensible toinclude new application functionality into the upgrade cycle because thismaking comparing previous results with current results more difficult.Changes should only be made where there are compatibility issues betweenversions of Ingres. Make the changes in the development environment, andthen test according to the test plan. When testing, use data volumes anddistributions that are as similar to the live data as possible.Do not just test applications merely for data validity; also perform concurrencytests, load and volume testing, and housekeeping tests.Creating a New Ingres Development Environment 39