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Why does my first tablespace in PostgreSQL always get the OID 16384?

For those already familiar with this topic and wonder about the heading, hold on and continue reading. One of the exercises we do in our PostgreSQL DBA Essentials workshop is to create a tablespace. This is to(…)

Oracle Database Appliance KVM Virtual Instance on ODA 19.12

By Mouhamadou Diaw KVM virtualization uses a kernel-based virtual machine (KVM) to create a virtualized environment for your Linux applications.In this blog I want to share some tasks I did at a client. The client is using ODA 19.12.

Oracle Database Appliance 19.12 Deployment

By Mouhamadou Diaw In this blog I am describing the deployment of an ODA with the version 19.12 Following patches will be needed -Patch 30403643: Oracle Database Appliance ISO Image -Patch 30403673: Oracle Database Appliance Grid Infrastructure Clone(…)

How to efficiently add constraints to existing tables in PostgreSQL

Is is not a surprise that applications change over time. New tables get added, columns need to be changed or new ones are required, and sometimes you need to add check constraints or foreign keys to already existing tables which(…)

First contact with OCI’s Autonomous Database

Introduction Benefits of going into the Oracle Cloud (OCI) are clear for most of us: no more datacenter and hardware to manage. But what else? On OCI, you can also decide to get rid of part of the DBA tasks(…)

SELECT FROM DUAL : Oracle Performance And Tuning

The DUAL table is automatically created by Oracle and contains one column (DUMMY) and one row (x value). This table is often used by SQL developer in PL/SQL code (Package, Functions, Trigger) to initialize variables storing technical information such as(…)

From Oracle Standard Auditing to Oracle Unified Auditing

In this post, I will not show you all advantages related to Oracle Unified Auditing. For that, read the oracle documentation. You can also read the blogs written by my colleagues : Oracle 12c Unified Auditing Feature in(…)

Nutanix Era with oracle databases : Part 6 – Refresh an oracle clone database

Now that we have cloned our ORATEST source database into a clone database named ORATCL1 (see Nutanix Era Blog part 5), we will see how we can refresh it and see the impacts on the oracle database itself. For(…)

Exadata X9M release

I would like to share some personal thoughts. September 28th 2021, Oracle released the eleventh Exadata data machine called "X9M-2" (2 CPU sockets), X9M-8 (8 sockets) and ZDLRA X9M. Exadata is a computing platform to run Oracle RDBMS, zero data(…)

Nutanix Era with oracle databases : Part 5 – Clone an oracle database

Now that we have our ORATEST database provisioned (see Nutanix Era blog part 3), that we could run snapshot and take Log Catch Up (see Nutanix Era Blog part 4), we will now see how we can clone(…)