Abstract: Oracle provides several options to aid performance, such as partitioning large tables, using materialized views, storing plan outlines, and many others. This chapter examines how DBAs can ...

The query optimizer is a crucial component in a relational database system and is responsible for finding a good execution plan for a SQL query. For cloud database service providers, the importance of ...

Abstract: According to recent trends, the size of databases is increasing rapidly, which calls for the need for larger databases that can be scaled to support future upgrades without compromising ...

If I remove the OR condition inside the parhentesis works. My first thought is to debug the execution and at a certain point the query is "flatten". Not sure why, maybe for index optimization? In the ...

I'm on a project that inherited some old generalized metadata search code and it can get terribly bogged down speed-wise. It's a bit annoying wait a couple minutes for a search to run: an example ...