12cR2

Troubleshooting Oracle Data Guard

Troubleshooting Oracle Data Guard when your standby database has errors or is not in sync(…)

No{Join,GroupBy}SQL – Analytic Views for BI

By Franck Pachot . Advocates of NoSQL can query their structures without having to read a data model first. And without writing long table join clauses. They store and query a hierarchical structure without the need to follow relationships,(…)

Oracle 12c – global partial index

By Franck Pachot . We have an incredible number of possibilities with Oracle. Yes, an index can be global (indexing many partitions without having to be partitioned itself on the same key) and partial (skipping some of the table(…)

Oracle 12c – reorg and split table with clustering

By Franck Pachot . In this series of small examples on recent features, I have imported in a previous post, the statistics of covid-19 per day and per countries. This is typical of data that(…)

Oracle 12c – peak detection with MATCH_RECOGNIZE

By Franck Pachot . This post is part of a series of small examples of recent features. I’m running this in the Oracle 20c preview in the Oracle Cloud. I’ll show a very basic example of “Row Pattern Recognition”(…)

Oracle 12c – pre-built join index

By Franck Pachot . This post is part of a series of small examples of recent features. I’m running this in the Oracle 20c preview in the Oracle Cloud. I have created a few tables in the(…)

Oracle 12cR2 : Partitioning improvements – online conversion of a non-partitioned table to a partitioned table

It’s time to a new blog about partitioning improvement in 12cR2. After auto-list partitioning and multi-column list partitioning & read-only partitions, I’ll demonstrate how we can easily convert a non-partitioned table to a partitioned(…)

SQL Plan Directives in 12cR2. Behavior is different than in 12cR1.

During the Frankfurter IT Tage I provided a presentation about SQL Plan Directives and how to reproduce a testcase in a test environment for a plan with used SQL Plan Directives (SPD). In that context I did a couple of(…)

Oracle 12cR2 : Partitioning improvements – multi-column list partitioning & read-only partitions

In my last blog post I presented auto-list partitioning, a new partitioning functionality coming with 12cR2. In this one I will introduce two others : multi-column list partitioning and read-only partitions. Multi-column list partitioning Image :(…)

Oracle 12cR2 : Partitioning improvements – auto-list partitioning

The second release of Oracle Database 12c (12cR2) comes with new improvements regarding partitioning. In this blog post I’ll show one of them : auto-list partitioning. Auto-list partitioning is an extension of list partitioning. It enable the automatic(…)