Oracle

Credential Errors (OGG-15409) with GoldenGate Migration Utility

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(…)

Remove grant to public in Oracle databases

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(…)

OGG-12020 Payload Error in GoldenGate Migration Utility

While migrating a GoldenGate classic architecture setup with the migration utility, I recently had the following OGG-12020 error: [ERROR] OGG-12020 - The request payload for 'POST /services/v2/config/files/ext.prm' is not defined as an object It(…)

USERID Syntax Warning in GoldenGate Migration Utility

When running the GoldenGate migration utility, which I presented in a previous blog post, you might encounter the following warning on USERID syntax: WARNING: USERID/PASSWORD parameter is no longer supported and(…)

OGG-08048 after patching GoldenGate: explanations and solutions

When patching GoldenGate Classic Architecture, you might encounter an OGG-08048 error when restarting your extracts and replicats. OGG-08048: Failed to initialize timezone information. Check location of ORACLE_HOME. What should you do exactly, and how do you avoid this(…)

How to patch your ODA to 19.30?

Introduction Patch 19.30 is now available for Oracle Database Appliance series. Let’s find out what’s new and how to apply this patch. What’s new? The real new feature is the possibility to rollback a server component patch done(…)

Create a new GoldenGate deployment with the REST API

Is it possible to create a new GoldenGate deployment with the REST API ? This is the question I will try to answer in this blog, based on my experience with the REST API. I will dive in what(…)

Grid Clusterware 26ai 2 node RAC upgrade from 19c rolling forward

This is third part of 26ai migration blog. We will upgrade here 2 node Clusterware with ASM in 19c. We will use newest 23.26.1 GoldImages from oracle support. This tutorial showing main steps how to perform upgrade, its not(…)

Relocate trail files with convchk when migrating GoldenGate to the Microservices Architecture

Depending on the location of your GoldenGate trail files, you might have to use the convchk utility to relocate them before migrating to the Microservices Architecture. Oracle has the following restrictions for using the(…)

Production-ready GoldenGate REST client in Python

Updated in June 2026, based on the latest version of the client. In this blog, I provide GoldenGate administrators with a fully working, production-ready Python client to efficiently handle GoldenGate REST API calls. From extract creation to user(…)