Working on a routine for dropping old partitions from a log table, I realized that I don’t have to know the name of the partition I want to drop. I can just specify a value for the partition key and Oracle resolves the partition for me. Here’s how.
I had a case where I had to match some names and needed to find a set of ways to clean and match strings. The solution I ended up with was a combination of regular expressions, the NLSSORT-function and the UTL_MATCH-package with the Jaro-Winkler algorithm.
Oracles function result cache (FRC) can in certain cases give a considerable performance boost. Application context is another useful feature. How does FRC work when the function result relies on context-settings? And how can we make them play well together?