upgrade

GoldenGate DB2 z/OS upgrade checklist

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(…)

Upgrading Oracle Linux when running Oracle databases

I recently had to upgrade an Oracle Linux production server running 19.30 Oracle databases for one of our customer. In this post, I will share with you the full set of steps that need to be carried out to run(…)

Upgrade RHEL from 9.6 to 10.1 (when running PostgreSQL/Patroni)

Upgrading from RHEL 9.6 to 10.1 is not just a routine update, it’s a major platform shift. When your server runs PostgreSQL compiled from source and a Patroni-managed cluster, the complexity increases significantly. System libraries change, Python environments break,(…)

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(…)

Dctm – Upgrade from 23.4 to 25.4 fails with DM_SERVER_E_SOCKOPT

Since its release in Q4 2025, I have worked on several upgrades from 23.4 to 25.4. The first one I worked on was for a customer using our own custom Documentum images. If you have followed my posts for(…)

Oracle Grid Infrastructure 26ai/ ASM upgrade from 19c one node.

This is second part of 26ai migration blog. We will upgrade here one 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(…)

Save your credential store before patching GoldenGate !

I recently had an issue with the GoldenGate credential store at a customer when patching a GoldenGate 19c setup with the latest 19.30 patch. Since it is not the first time that I have encountered this problem, I figured(…)

Database upgrade to AI Database 26ai (23.26.1) for Linux x86-64 upgrade from 19C in 3 steps using gold images.

This tutorial showing simple database upgrade to 26ai using traditional method and autoupgrade tool, For operational databases please properly test and plan your upgrade. https://docs.oracle.com/en/database/oracle/oracle-database/26/fppad/upgrading-oracle-database-software.html This is one from 3 Articles related to 26.1 upgrade:(…)

Dctm – Oracle DB permissions on recent versions

If you have been running Documentum on Oracle in the past, you might have noticed that recent versions of Dctm requires more Database permissions to be able to perform an install/upgrade. This blog will just be a quick one(…)

PostgreSQL 17-18 major upgrade – blue-green migration with minimal downtime

As PostgreSQL 18 Beta 1 has been released (link) and is packed with lots of cool features like improved IO on reads for example, I wanted to test out the new pg_createsubscriber and pg_upgrade options and how they(…)