Oracle Database as our consultants live it every day: installation and patching, upgrades, RMAN backup and recovery, Data Guard, RAC, performance tuning, multitenant, licensing, and engineered systems such as ODA and Exadata.
By Franck Pachot . Statistically, my blog posts starting with a single SQL keyword (like COMMIT and ROLLBACK) in the title are not fully technical ones, but about moves. Same here. It is more about community engagement, people sharing. And about a friend. And clusters of course… In 2020 because of this COVID virus, we try to avoid clusters of…
Column formatting was always a pain in sqlplus when writing queries on the prompt. Most people use tools like SQL Developer or Quest TOAD which can scroll horizontally when running queries against a database, but as a consultant you are often still forced to use sqlplus. Here’s the issue: When running e.g. a query on a table T1 (which is…
By Franck Pachot . My first attempt to connect to an Oracle database from a Jupyter Notebook on Google Colab was about one year ago: https://medium.com/@FranckPachot/a-jupyter-notebook-on-google-collab-to-connect-to-the-oracle-cloud-atp-5e88b12282b0 I’m currently preparing a notebook as a handout from my coming SQL101 presentation where I start with some NoSQL to discover the benefits of RDBMS and SQL. I’m running everything on the Oracle Database…
By Franck Pachot . I may have mentioned in some previous blog post that, in my opinion, the names of Oracle Database features make sense on the vendor product management context more than in a user context. I’m not saying that it is good or bad. There are so many features, that can be combined, and that evolved for many…
I had recently faced an interesting issue deploying ODA X8-2-HA. I would like to share my experience here hoping it could help some of you. Error in creating the appliance After reimaging both node0 and node1 from the ODA X8-2-HA, running the configure-firstnet and updating the repository I was going to create the appliance. On ODA X8-2-HA the appliance creation…
Through this blog, I would like to show, with a real customer case, how I have been migrating databases in High Availability environment on an ODA. High Availability using Data Guard for Oracle Enterprise Edition or dbvisit for Oracle Standard Edition 2. One of the advantage here would be to use the Standby Database as fallback in case there would…
Databases administration on a Bare Metal ODA will be done as root user by running odacli commands : odacli create-database to create a database odacli upgrade-database to upgrade a database between major releases odacli move-database to move databases from one Oracle home to another of the same database version odacli update-dbhome to update a specific RDBMS home to the latest…
As a consultant working for customers, I’m often in the situation that I have an answer to a problem, but the recommended solution cannot be implemented due to some restrictions. E.g. the recommendation would be to adjust the code, but that is not feasible. In such cases you are forced to try to help without code changes. Recently I was…
By Mouhamadou Diaw The ODA X4 is still in use for some customers. The last time I was asked to validate the backups . Let me explain the context. Actually the backups are done via RMAN on local in a NFS share. After these backups are backep up by Netback on tape. The goal was just to validate that the…
By Franck Pachot . I’ve always been working with databases. Before the cloud era, the most abstract term was “data”. A variable in memory is data. A file is data. A block of disk contains data. We often created a ‘/data’ directory to put everything that is not binaries and configuration files. I’ll always remember when I did that while…
By Mouhamadou Diaw In an Oracle 20c Data Guard environment with a broker configured we can have following files called client-side broker files -The observer configuration file : observer.ora -The observer log file -The observer runtime datafile: fsfo.dat -The fast-start failover callout scripts (new feature in Oracle 20c) Before Oracle 20c, there was no default location for these files. Starting…
By Franck Pachot . On my Oracle Cloud Free Tier Autonomous Transaction Processing service, a database that can be used for free with no time limit, I have seen this strange activity. As I’m running nothing scheduled, I was surprised by this pattern and looked at it by curiosity. And I got the idea to take some screenshot to show…
