Test

Silent ORA-918 behavior change in RU 19.17.0 and newer

Posted on October 27, 2022 by Behavior Change Patch Recommendation 27

I think we have the best customers out there. It is incredible what some people find. We would be lost without you, and this blog would contain only a fraction of the information we can share with you. In this case let me explain the silent ORA-918 behavior change in RU 19.17.0 and newer. And all credits go to Peter Lehmann from Deutsche Telekom who found this issue only a few days after we released 19.17.0.

What is happening?

Peter shared an awesome and simple test case with me. A query with ambiguously defined …

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Upgrade Testing – Online Clone a PDB to 19c

Posted on March 6, 2020 by Single-/Multitenant Upgrade / Migration 34

In the past I wrote some articles about cloning PDBs to new environments. And I added a post about RELOCATE as well. But I realized that I have no specific blog post about a very typical scenario: Upgrade Testing – Online Clone a PDB to 19c.

Upgrade Testing - Online Clone a PDB to Oracle 19c

Photo by Jørgen Håland on Unsplash

My Setup

I have an Oracle 12.2.0.1 CDB with a PDB, and another Oracle 19.6.0 CDB. I will hot clone the PDB from 12.2.0.1 to the higher version CDB, and then upgrade the PDB.

Upgrade Testing - Online Clone a PDB to Oracle 19c

The motivation to do it this way is to allow testing for the application …

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Mike Dietrich
Oracle Senior Director of Product Management for Database Upgrade, Migrations and Patching writing just another blog.

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