Installing Ubuntu Desktop 22.04 LTS on a virtual machine using VirtualBox

Marc Lameriks August 3, 2022 Technology 2 Comments

For a TypeScript training, I needed an environment with Visual Studio Code and Node.js (a JavaScript runtime). On my Windows laptop, I wanted to create an environment with Ubuntu …

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Delay in establishing RAC Database connections after upgrading from Oracle 11g.

Johan Buijser July 22, 2022 Technology, Database, Databases 4 Comments

After upgrading to Oracle 12c, 19c, database connections take a long time (10 sec or more), before the connections are established. The connection time was less than 0.5 sec …

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Pseudo Change Timestamp–Finding recently changed table rows using Flashback Version Query to provide a surrogate last_changed column

Lucas Jellema July 19, 2022 Database No Comments

My challenge: replicate changes from database A to database B, once per day. The tables involved are pretty big (100M records). I really would not want to process them …

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