On 9/12/19 9:43 PM, kunwar singh wrote:
Hi Listers,Have you tried with different statistics options? System statistics, OPTIMIZER_DYNAMIC_SAMPLING, proper histograms and alike? I found out long time ago that collecting statistics properly usually gives me good performance for 99% of the queries. The best way to tune is not to do it at all.
Silly question :)
Is there any Oracle guru who give course on this specific topic and goes much in depth.
Not looking for course on sql tuning. I am able to tune the query in most cases, it is the optimizer decisions for many queries in a new version upgrade(11g to 12.1.0.2).. which are giving me some headaches as many applications we support generate queries dynamically and statistics optimization is the farthest i am able to go to get good plans.
Cannot use SPM options due to dynamic nature of sqls generation.
