Hi All,
I have a compressed database which I'm currently working on, and what I have observed is that after compressing the database, the performance seems to have gone worse, what suprises me is that fact that compression was supposed to make performance better, especially for reports/selects, for data loads I can understand that performance may drop especially if the table is very volatile.
One thing that I have noticed is that the report does use a lot of temp tables, so it loads the compressed data into a temp table and then works off the table. Are there any performance penalties for loading compressed data into a temp table or are there any tricks that can be applied.
I have created additional compressed indexes to support the queries, doing the test in parallel i.e Compressed vs Uncompressed, I am amazed that I'm having to create additional indexes on the compressed database just to make the performance better, I didnt have to do this for the uncompressed database.
Any ideas.