May 10

Removing exposed HTTP Digest hash from user$ in Oracle 12.1

Background Oracle 12.1 has introduced a lot of new cool security features and improvements. We all agree with that. However, one of the most bizarre and security vulnerability things that Oracle did in this release was introducing HTTP Digest Authentication to allow XDB users to log in. The new EM Express Edition is one of the …

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May 10

Where is Oracle Database 12.2.0.1 April 2017 PSU ?

Oracle 12.2 database is already available for more than 3 months. As expected, the first Patch Set for a given Release comes with a lot of bugs and we want as soon as possible a PSU to close all those gaps. However, I couldn’t find the PSU for the 12.2 version on the quarterly April 2017 …

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Mar 10

Check which Hub Node is Leaf Node connected to in Oracle Flex Cluster

In this article, I will show how to detect to which Hub Node is your Leaf Node connected to in an Oracle Flex Cluster scenario where you have multiple Hub Servers. First of all, let’s check our current scenario: [oracle@oranode3 ~]$ crsctl get node role status -all Node ‘oranode1’ active role is ‘hub’ Node ‘oranode2’ …

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Mar 09

OCM 12c Preparation – Download the Exam Environment

The exam environment keep changing over the time and I believe that Oracle will soon update the Linux and Database release to the latest. As Mar/2017, the exam environment in official OCM website is the following: Exam Environment Oracle Linux Release 6.5 64 bit Oracle Database 12c Enterprise Edition Release 12.1.0.2.0  64 bit Oracle Grid Infrastructure 12c Release …

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Mar 07

OCM 12c Preparation – Recommended Hardware

As we will need to create RAC (with Hub and Leaf Nodes), Dataguard (with Far Sync instance), Single Instance and Oracle EM machines scenarios, let’s consider a scenario where we will need to simulate 4 VMs running at the same time. So, you will need at least: 16 GB RAM Quad core fast CPU (Something similar or better …

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