Answers-Perf

Question

Hi,
Can Any one tell me the performance tuning techniques we can do in OBIEE Answers side?not RPD

Answer 1

Answers performance is always tied directly to database performance. I'd start by taking a look at the physical SQL being generated, and try to find ways to improve that. You'll most likely hit one of several scenarios:
1. SQL is not optimal - which means your RPD setup is not correct
2. SQL is optimal, but performance still too slow - unfortunately means hardware isn't up to the task
You do have several options to fix #2 that don't involve buying better database hardware. You could create summary tables, and/or turn on Answers caching (perhaps with queries to pre-populate common runs). However, both of these have issues. Creating summary tablesis great - but if a user asks a question that isn't answered by the summary, then they get kicked back to the "slow" full table. Caching queries is helpful - but only if the users run queries that have already been run. If they ask a "new" question it won't hit the cache.
Unfortunately, on almost every OBIEE installation I've seen...the BI server sits there almost unused, waiting for results to come back from the databases.
Hope this helps,
Scott