Oracle said in their Student Guide for 12c that a local user cannot utilize system privileges on a common user's schema. When I initially checked that preposition, I was a little bit puzzled by the behavior discussed in this post.
wget one liners to download data from *.oracle.com without human interventionWhen the topic of downloading Oracle software comes up, there is a common misconception that it requires a human intervention to accept the license terms.
ROWIDs with Global IndexesWhile working with developers on optimizing a query, I discovered a limitation of the BITMAP AND operation.
A developer has recently shown me an interesting wrong results issue in one of our 12.1.0.2 databases. Having investigated it, I identified the root cause of that issue and constructed a simple test case that can be used to reproduce it.