Martin's Blog

Latest — 18 Apr 2025

Valkey: Use Docker Compose for Valkey as alternative to Redis

As Redis changed its license to a proprietary one, the Linux Foundation created a fork called Valkey, which has a BSD license. "Valkey is an open source high-performance key/value datastore that supports a variety of workloads such as caching, message queues, and can act as a primary database.

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MariaDB: use Docker Compose for MariaDB

Here's an easy way how to set up MariaDB using Docker Compose

Oracle: DataPatch fails with error PLS-00302

This is how to solve PLS-00302 when executing DataPatch

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: Time bombs

This post shows some time bombs in Oracle environments

LVM: Couldn't create temporary archive name

Resize an LVM volume when space is exhausted

Redis: Use Docker Compose for Redis

This is how to create a Redis single node or a Redis cluster using Docker Compose

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

GraphDB: Use Docker Compose for GraphDB

What is GraphDB? "Ontotext GraphDB is a highly efficient, scalable and robust graph database with RDF and SPARQL support. With excellent enterprise features, integration with external search applications, compatibility with industry standards, and both community and commercial support, GraphDB is the preferred database choice of both small independent developers

PostgreSQL: Use Docker Compose for Pgadmin4

pgAdmin4 is a great tool to manage PostgreSQL databases. It can be installed locally; when you execute it, it starts a local webserver, and you can connect to it. But if there are more than one or two DBAs, it could be a benefit to install a central pgAdmin4. We&