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GoldenGate

Real-time data replication with Oracle GoldenGate: how to configure it, keep it running, use it for migrations and connect Oracle with other databases.

Simplified distribution path creation in GoldenGate 26.3

The 23.26.3.0.0 release update of GoldenGate 26ai (July 2026) ships a small but welcome usability change, listed in the New Enhancements section of the release notes: Bug 39415027: Generic – Simplified Distribution and Receiver Service Path Configuration Enhanced the Create Distribution and Receiver Service Paths experience by introducing Simple and Advanced configuration modes. The simplified view displays only the required settings by default, while… 

LOB replication with GoldenGate and importance of primary keys

Every time I work on database migrations with GoldenGate, I have the same talks with application teams about missing primary keys. Especially when it comes to LOB replication with GoldenGate. In a previous blog, I wrote about how to interpret the DBA_GOLDENGATE_NOT_UNIQUE view, which lists tables with no primary key or non-null unique indexes. There are two main groups of… 

GoldenGate row identification: misconceptions and solutions

GoldenGate is a powerful replication tool, but it is so versatile that you should always check whether what you intend to do is supported or not. Oracle provides a few interesting scripts and views to check your environments before attempting a replication with GoldenGate, and I wanted to write about the DBA_GOLDENGATE_NOT_UNIQUE view. Before explaining what this view contains and… 

GoldenGate NGINX reverse proxy behavior changes

I recently wrote about NGINX reverse proxy reconfiguration after creating or deleting a deployment in GoldenGate. It reminded me that there is an overlooked aspect of the reverse proxy configuration, which is important when trying to automate GoldenGate management with the REST API. In fact, when using a reverse proxy with a single deployment, some endpoints are different from a… 

GoldenGate 26ai out-of-place patching with the web UI

For some customers, the end of support for GoldenGate 19c in May this year and the migration to Microservices Architecture mean that they have to adapt their patching procedures (if they had any !). Let’s see how to patch a GoldenGate Microservices Architecture out of place efficiently. This guide is designed for GoldenGate 26ai because this version introduces some small… 

GoldenGate: Regenerate NGINX reverse proxy after deployment changes

Configuring an NGINX reverse proxy for GoldenGate is well documented by Oracle, but what is not is the implication of adding or removing deployments. In fact, when modifying your GoldenGate deployments, you will have to reconfigure the NGINX reverse proxy. If you don’t, part of your installation will not be working anymore. This is what will happen in the web… 

OGG-08502 Path not found error from OGG Receiver Service

Update: this bug seems to be corrected with the latest GoldenGate patch (23.26.2.0.1). If you face this error, try to patch your GoldenGate deployments. Recently, after a successful migration to GoldenGate 26ai, a customer complained that he was seeing a lot of the following error in the ggserr.log file of a GoldenGate deployment (I replaced the names for the purpose… 

Install and configure OEM plug-in for GoldenGate

If you are licensed for the GoldenGate Management Pack, using the Enterprise Manager plug-in for GoldenGate improves monitoring and management of your deployments. And after migrating to the Microservices Architecture, you should definitely update your plug-in and rediscover all targets. Let’s see how to do all that here. In this blog, I will use the latest version of the Enterprise… 

Increase GoldenGate 26ai log retention

GoldenGate logs are a powerful source of information when debugging or analyzing your deployments. However, some of these logs have a rather low retention period in active deployments. They might then not even be useful for debugging if you send them to your dbi consultants or the Oracle support for analysis. So how can you increase GoldenGate log retention ?… 

Deployment removal failed in GoldenGate Configuration Assistant (INS-85038)

Recently, I wrote about deleting a GoldenGate deployment with the REST API, and when investigating this issue, I remembered a limitation of the configuration assistant, which I wanted to talk about. For more information about deployment removal with the configuration assistant, you can read a blog I wrote on the topic (for 23ai, but nothing changed in that regard in… 

EM-90000 SSL error with GoldenGate targets in OEM

In this blog, I will explain what needs to be done when registering GoldenGate targets behind NGINX reverse proxy in the Enterprise Manager. More specifically, we will see how to avoid the EM-90000 error related to an SSLHandshakeException. If you are upgrading to GoldenGate 26ai and migrating from Classic to Microservices Architecture, you must re-discover GoldenGate targets in the Enterprise…