SPD

Oracle SPD status on two learning paths

By Franck Pachot . I have written a lot about SQL Plan Directives that appeared in 12c. They were used by default and, because of some side effects at the time of 12cR1 with legacy(…)

JAN17 Proactive Bundle Patch + Adaptive Statistics control

By Franck Pachot . If you have to create a new database now (I'm writing this in March 2017) for a migration of OLTP database with minimal risks of regression, I would recommend: The latest patchset of Oracle Database 12cR1(…)

12cR2: no cardinality feedback for small queries

By Franck Pachot . This follows the comments on Clemens Bleile post about SQL Plan Directives in Oracle 12.2 where he discovered a new behavior that is not documented. The feature is good: bypass the cardinality feedback overhead when the(…)