Drop the underlying sequence of an identity column ?

I recently heard about a bug related to identity columns and their underlying sequence : if the sequence is dropped, an insert in the corresponding identity column would generate an error. Somehow it makes sense, but I wanted to check the behaviour in a recent Oracle Database version. Fortunately, I have an “Always Free” 18.4 […]

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OGB Appreciation Day : SQLcl

I am really glad to participate in #ThanksOGB this year. The 2017 edition (called #ThanksODC at that time) was actually the starting point of my blogging journey. This year, I will not surprisingly talk about a Command Line Interface again : Oracle SQL Developer Command Line, as known as SQLcl. What is it ? Simply […]

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“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

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 : (Please refer […]

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Exadata Cloud at Customer : Drill down into Cloud Tooling RPM content

On one of my Exadata Cloud at Customer system, I recently had an issue which required to check exactly which files were updated when upgrading the cloud-specific tooling included on Exadata Cloud at Customer, also know as dbaastools_exa. I needed to know if a configuration file had been overwritten or not, when upgrading dbaastools_exa. My […]

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Oracle Data Guard Broker 18 : new VALIDATE NETWORK CONFIGURATION command

There is a very handy new command available in Oracle Data Guard Broker 18c. Too bad I discovered it AFTER I solved my problem 😉This quick blog post demonstrates what can be easily spotted with this new VALIDATE NETWORK CONFIGURATION command. In this example, I have 2 sites, each with a 2-node Oracle 18.6 Grid […]

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Exadata Cloud at Customer : Grid Infrastructure patch under the hood

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, […]

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

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 […]

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Exadata Cloud at Customer : Reinstall Cloud Tooling

(Photo by Joël Assuied, on Unsplash) I just started working on Exadata Cloud at Customer. And with this, come my first mistakes 😉 One of my compute node had all cloud tooling scripts located in the adequate directories : # ls -l /var/opt/oracle/exapatch/ […] -r-xr-xr-x 1 oracle oinstall 0 Feb 4 21:23 exadbcpatchsm -r-xr-xr-x 1 […]

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