“The software home is already registered in the central inventory ?” A failed attempt to apply RU on 19c Grid Infrastructure home before it is configured

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I recently came accross a new (to me) error when trying to upgrade Grid Infrastructure on my lab, a 2-node 18.6 RAC cluster. To upgrade Grid Infrastructure directly to 19c with the latest Release Update 19.4, I downloaded the 19.3 base release and tried to apply RU 19.4 before launching the upgrade :

# /u01/app/19_4_0_0/grid/gridSetup.sh -silent -applyRU /staging/path/29708769

(Please refer to Doc ID 1410202.1 for the full explanation.)

Unfortunately, I had my head in the clouds (pun intended), and the node on which the patch was running encountered a problem and the session got killed.

Continue reading ““The software home is already registered in the central inventory ?” A failed attempt to apply RU on 19c Grid Infrastructure home before it is configured”
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Exadata Cloud at Customer : Grid Infrastructure patch under the hood

(Photo by Junaid Ur Rehman Jamil Ahmed, on Unsplash)

Following up with this blog post, here is a quick overview of what is performed on Exadata Cloud at Customer nodes when a Grid Infrastructure patching is launched via the web interface, the Oracle Cloud control plane.

The whole patch process is not that different from the precheck process. Most of the steps are similar, and of course, the main difference is that the Opatch command actually … patches the Grid Infrastructure 😉

Let’s launch the patching process with a simple click on the Oracle Cloud control plane (sorry for the Fren-Glish screenshots …) :

Continue reading “Exadata Cloud at Customer : Grid Infrastructure patch under the hood”

Exadata Cloud at Customer : Grid Infrastructure patch precheck under the hood

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I am now exploring the brand new Grid Infrastructure patching method for Exadata Cloud at Customer. With Exadata Cloud at Customer version 18.1.4.4, it is now possible to patch Grid Infrastructure with a few clicks in the GUI. Let’s see exactly which steps are performed.

First, with my preferred method (CLI 🙂 ), I run opatch against Grid Infrastructure home to check the current patch level :

28656071;OCW RELEASE UPDATE 18.4.0.0.0 (28656071)
28655963;DBWLM RELEASE UPDATE 18.4.0.0.0 (28655963)
28655916;ACFS RELEASE UPDATE 18.4.0.0.0 (28655916)
28655784;Database Release Update : 18.4.0.0.181016 (28655784)
28547619;TOMCAT RELEASE UPDATE 18.0.0.0.0 (28547619)

Since the GUI now shows when a new patch is available for Grid Infrastructure, there is a new Exadata Grid section with a precheck option in its burger menu :

Continue reading “Exadata Cloud at Customer : Grid Infrastructure patch precheck under the hood”

Fun with attribute STOP_TIMEOUT for a custom clusterware resource

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(Photo by Alex Guillaume, on Unsplash)

I recently encountered a problem, for which I do not have any clue yet. But at least, I have a workaround. The goal of this blog post is to remember the exploration towards this workaround. And then to switch back to a normal sitution when possible.

For some reason, 120 development databases were configured to use Shared Server Architecture. The day after this change of configuration, a lot of users started complaining about a fully-automatized-0-problem-encountered-in-the-last-2-years-procedure to duplicate a production database to development database … Indeed, this procedure begins with stopping target database, and this day, failed almost everytime during this step … Why ?

Continue reading “Fun with attribute STOP_TIMEOUT for a custom clusterware resource”

Deinstalling previous Grid Infrastructure Home after an upgrade to 18c

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Yesterday, I upgraded my lab Grid Infrastructure version 12.1 to version 18c on Oracle Linux Server release 7. Everything went (approximately) OK, but this is not the subject of interest today. Afterwards, I wanted to get rid of the old 12.1 Grid Infrastructure home with the deinstall utility.

Continue reading “Deinstalling previous Grid Infrastructure Home after an upgrade to 18c”