19c

A change in full table scan costs in 19c?

During tests in Oracle 19c I recently experienced this: cbleile@orcl@orcl> select * from demo4 where m=103; cbleile@orcl@orcl> select * from table(dbms_xplan.display_cursor); ... --------------------------------------------------------------------------- | Id | Operation | Name | Rows | Bytes | Cost (%CPU)| Time | --------------------------------------------------------------------------- |(…)

Speed up datapump export for migrating big databases

Introduction Big Oracle databases (several TB) are still tough to migrate to another version on a new server. For most of them, you’ll probably use RMAN restore or Data Guard, but datapump is always a cleaner way to migrate. With(…)

Focus on 19c NOW!

Introduction For years, Oracle used the same mechanism for database versioning. A major version, represented by the first number. And then a release number, 1 for the very first edition, and a mature and reliable release 2 for production databases.

ODA X8-2: the new generation

Introduction ODA X7-2 marked the maturity of the Oracle Database Appliance evolution, with 3 models suitable for nearly all customers using Oracle databases. The X7-2M was my favorite, with a lots of cores available (and restrainable), enough memory for dozens(…)

OBUG 2019 – First event from Oracle Users Group in Belgium!

Introduction It’s the first edition of the Techdays, the Oracle community event in Belgium. This event happened in Antwerp these past 2 days, and a lot of speakers came from around the world to talk about their experience on focused(…)