Everything our consultants learn while running databases for customers: Oracle, PostgreSQL, SQL Server, MySQL, MariaDB, MongoDB and Delphix. Expect hands-on posts about installation, day-to-day administration, backup and recovery, performance tuning, replication and upgrades.
Among all the automation I was doing around a GoldenGate installation for DB2, I recently ended up with an INS-85037 error when running the configuration assistant oggca.sh. And because this error is quite common and has many different possible root causes, I wanted to write about it. Differences in GoldenGate setup between Oracle and DB2 If you’re wondering how to…
AutoUpgrade with a refreshable clone is basically “zero‑panic upgrades with a live copy of your database.”. What problem it solves Traditionally you had to schedule a maintenance window, stop everything, take a backup, upgrade, and hope nothing went wrong. With a refreshable clone PDB, AutoUpgrade builds and continuously syncs a copy of your database while production stays online. At cutover…
INTRODUCTION Today, the benefits of automation no longer need much explanation: saving time, reducing human error, and ensuring every environment remains aligned with internal standards. What is less obvious, however, is how using an Ansible Playbook can provide advantages that more traditional scripting approaches — such as large PowerShell scripts — struggle to offer. That is exactly what I want…
When automating your GoldenGate deployment management, you might want to create path connections with the GoldenGate REST API. This is an important aspect when connecting GoldenGate deployments with distribution paths. A first step towards this is to create a path connection on the same deployment as the distribution server where the distribution path will run. In the GoldenGate web UI,…
The GoldenGate migration utility provided by Oracle allows you to quickly upgrade your classic architecture into GoldenGate 26ai with Microservices Architecture. But even after some updates, it still has a few bugs, as I explained in a previous blog post. One of them can lead to an OGG-15409 error during the migration. This error will not appear when running the…
CIS recommendations The Center for Internet Security publishes the “CIS Oracle database 19c Benchmark” with recommendations to enhance the security of Oracle databases. One type of recommendations is to remove grant execute to public (chapter 5.1.1.1-5.1.1.7 Public Privileges). There is a list of powerful SYS packages. And for security reasons, only users that really need this functionality should have access…
While migrating a GoldenGate classic architecture setup with the migration utility, I recently had the following OGG-12020 error: It is a very cryptic error at first glance, but let’s try to understand what happened. Where does the error come from ? The first step is to understand what is causing the issue. For this, you need to understand how the…
MariaDB has been quite active lately, the version 11.8 was already quite a step forward and apart from the changes on LTS schedule and the EOL durations, the RC 12.3 LTS is bringing some interesting changes to binlogs, pushing even further performance improvements and reliability. Instead of using the traditional flat file binlogs, they can be now integrated into InnoDB…
In our performance tuning workshop, especially when attendees have an Oracle background, one question for sure pops up every time: How can I use optimizer hints in PostgreSQL. Up until today there are three answers to this: Well, now we need to update the workshop material because this was committed for PostgreSQL 19 yesterday. The feature is not called “hints”…
When running the GoldenGate migration utility, which I presented in a previous blog post, you might encounter the following warning on USERID syntax: This is not really a surprise, since USERID is an old syntax that should not be used anymore. In fact, it is not even part of the latest versions of GoldenGate. Let’s see a very basic example…
In the lasts posts in this series we’ve looked at Fujitsu’s distribution of PostgreSQL (here and here) and EnterpriseDB’s distribution of PostgreSQL (here and here) which both come with support for TDE (Transparent Data Encryption). A third player is Cybertec with it’s Cybertec PostgreSQL EE distribution of PostgreSQL and this is the distribution we’re looking at in this and the…
When patching GoldenGate Classic Architecture, you might encounter an OGG-08048 error when restarting your extracts and replicats. What should you do exactly, and how do you avoid this error in the future ? In fact, this error is easy to reproduce, which also makes it easy to avoid. Usually, it happens when following the official documentation instructions for patching. They…
