Real-time data replication with Oracle GoldenGate: how to configure it, keep it running, use it for migrations and connect Oracle with other databases.
I sometimes get asked how the new AI Service of GoldenGate 26ai works, and the best way to show it is to see it in action. In this blog, I will set up the AI Service with Google Gemini, using a free API key in Google AI Studio. Most of what will be said here can be applied to the…
When replicating data with GoldenGate, you often want DDL changes (table alterations, new tables, dropped indexes, etc.) to follow alongside DML. But replicating all DDL is sometimes dangerous (TRUNCATE, DROP TABLE) or simply impossible (architecture differences between source and target). DDL filtering gives you precise control over this. This blog covers multiple aspects, including latest changes introduced in GoldenGate 26ai:…
When migrating a Coordinated Replicat for a client, I faced a very specific OGG-02454 error that I wanted to share. When using the migration utility on a Classic Architecture Coordinated Replicat, every attempt failed at the checkpoint conversion step with OGG-02454 Trail … not found in checkpoint file. Because the migration utility rolls back the entire migration on any hard…
In a previous blog, I went through the full procedure of renaming a GoldenGate extract from the adminclient. I included all necessary steps to avoid missing transactions. Doing this by hand is completely fine, but if you do it often, or want to remove the risk of a typo on an SCN, I have another solution for you. In this…
In a previous post, I shared the OGGRestAPI Python client I built for the GoldenGate REST API. Since then, I kept using it on production deployments, fixing it and adding new features along the way. It felt like the right time to stop asking people to copy a .py file into their project, so I published it to PyPI. You…
Throughout my consulting missions, I have often been asked to rename GoldenGate extracts. While this is not a difficult task, it should still be done correctly to avoid missing transactions. In this blog, I will explain how to rename a GoldenGate extract from the adminclient. If you often rename extracts, or want to remove the risk of a typo on…
Upgrading GoldenGate when the source is DB2 for z/OS is not quite the same exercise as upgrading a GoldenGate installation for Oracle. Most of what I described in my generic blogs about planning a GoldenGate upgrade and migrating from Classic to Microservices Architecture is still valid. However, there is an extra layer to deal with. It has to do with…
In a previous blog, I presented how to set up a distribution path between two GoldenGate deployments both secured with NGINX. The method I used there was purely through the Web UI. But GoldenGate also exposes a full REST API, and everything you can do in the UI can be done through the API as well, which is useful for…
I already covered out-of-place patching from the web UI, but patching tasks should be automated, and clicking through the same screens for every deployment can get repetitive. Let’s do the exact same out-of-place patch of a GoldenGate Microservices Architecture deployment, this time entirely with the REST API. Every step below shows two ways to make the same call: Installing the…
When doing complex operations with GoldenGate, checking for long running transactions is mandatory if you don’t want to miss transactions. Let’s look at two ways of retrieving such information, first with the adminclient, and then with the REST API. When and why should I worry about long running transactions ? In a standard extract life-cycle, you should not be worrying…
While upgrading GoldenGate to 26ai for a DB2 z/OS source, I had to update the IBM Data Server Driver for ODBC and CLI (CLI Driver, in short) alongside it. Since I realized that DB2 driver know-how was rare in companies, I figured it would be worth writing a blog about the topic. In this GoldenGate upgrade, the previous driver was…
While working on a client’s GoldenGate 26ai environment, I ran into a NFS-related replication issue that could have been serious, had it happened in production. Here is what happened and how the issue was fixed. The client’s GoldenGate extract was running on a dedicated server, capturing changes from an Oracle 19c source database. Trail files were written on an NFS.…
