Oracle: Create or drop database link for/from different schema You can't create a database link for another user than the one you logged in. Neither you can drop it. Here's a workaround...
Oracle: Use Docker Compose for Oracle Weblogic Server Oracle WebLogic Server (WLS) is the application server made by Oracle. As I'm a DBA and not an application admin, I try to keep away from it, but sometimes, i. e. when using Cloud Control, I come into contact with it. The installation of WebLogic Server is no
Oracle: Using Oracle Cloud Infrastructure (OCI) for free Use Oracle Cloud Infrastructure without spending money
MySQL: Use CheckMk to monitor MySQL CheckMk is a great tool for monitoring. Especially when it comes to standard functions for operating systems. But CheckMk is also great for the monitoring of MySQL databases. If you want to use it, just install the CheckMk agent on the MySQL server. Additionally, you'll need the MySQL
Oracle: Which updates to install In my IT carreer, I often come to new customers I didn't know before. So I don't know their infrastructure. As I'm a DBA, I'm not interested in application servers (besides telling the customer that Operating Systems and standard applications should always
Oracle: Prepare database for upgrade using autoupgrade.jar In my job, I often have to upgrade or patch Oracle databases. Furtunately, most of all the databases in production are now on 19c, and the rest is mainly on 12.2.0.1. The best tool for upgrading is autoupgrade.jar, which in future will be the only upgrade
Oracle: Upgrade from 12.1.0.1 using autoupgrade.jar takes ages Last year, when I upgraded many Oracle databases to 19c, I had a few databases which were still on Oracle 12.1.0.1. In case that you forgot what 12.1.0.1 meant for Oracle and all customers: * Until 12.1.0.1, we had Enterprise Edition, Standard
Oracle: Use Docker Compose for Oracle Autonomous Database Oracle Autonomous Database is "an easy-to-use, fully autonomous database that scales elastically and delivers fast query performance. As a service, Autonomous Database does not require database administration." You can use Oracle Autonomous Database in Oracle Cloud. But if you don't have that, or you prefer to