RAC DB/Application Test

Question

I configured RAC DB/Application on RHEL4, 10.2.0.1, I want to test Application/DB test , Need suggestions what thing i should test? On Application side and DB side?

Answer 1

OK I'd start to test my most important things and things that will cause most possible contention and synchronization as I wrote in previous post.
The first condition is to use the same connection algorithm as you'll use in production i.e. load balancing, somehow partiotioning your app to different nodes or whatever. Then comes my examples:
1) if you have very frequent inserts then test them as mad using as many nodes as possible, as well as using queries to the veray same table(s). So you'll test as simple things as approprite caching for sequences, contention for index blocks, contention for table blocks.
Test also any other DML and queries focusing on the same table(s) containing the same data.
2) if you have some possible bottleneck for what all your processes should synchronize e.g. home grown sequences because someone (wrongly of course) said you need to avoid gaps or some table were everything is putting something in e.g. session info or some process that should be run before every other sql statement in your code e.g. some home grown mega audit then test it doing as much load as possible to this possible synchronization point.
3) if (GOD forbid! of course) you have some piece of code without appropriate use of bind variables and/or big piece of dynamic sql then run this code on all possible nodes in many many sessions.
So that would be my scenario. I'm completely sure others can add some valuable thoughts.
Gints Plivna
http://www.gplivna.eu