Upgrading Oracle Fusion Middleware from 12c to 14c is not simply about installing new binaries and running the Upgrade Assistant. After working on several Oracle Fusion Middleware upgrades, involving WebLogic Server, ADF, Oracle Forms, Oracle Reports, Oracle HTTP Server, and Identity Management components, I have noticed that the most challenging issues rarely come from the installation itself. They usually come…
During a recent Oracle Fusion Middleware upgrade from 12.2.1.4 to 14.1.2, I encountered an interesting issue with Oracle HTTP Server (OHS) and WebGate. The upgraded components were running, but WebGate initialization failed and the application was inaccessible. The root cause was not an incorrect OAM registration or a missing configuration file. It was a stale ObAccessClient.xml in the OHS/WebGate runtime…
How bytecode analysis exposed an ORB initialization defect during an Oracle Fusion Middleware upgrade! Context During a recent Oracle Fusion Middleware upgrade from 12.2.1.4 to 14.1.2, I encountered an unexpected startup failure affecting Oracle Reports Server. The installation, domain upgrade and reconfiguration had completed successfully. The following components were operational: However, the standalone Reports Server components, RptSvr_1 and RptSvr_2, failed…
During an Oracle Fusion Middleware 14.1.2 upgrade, I encountered an issue while reconfiguring an existing Oracle ADF domain. The WebLogic Configuration Wizard launched successfully through SSH X11 forwarding, but the graphical interface became unresponsive during the reconfiguration. There was no obvious error message, and the wizard could not proceed. The solution turned out to be a single Java parameter. The…
During the preparation of an Oracle Fusion Middleware upgrade from 12.2.1.4 to 14.1.2, the Upgrade Assistant readiness check flagged the WebLogic schema in an ADF domain. The error identified during the investigation was INVALID_WLS_COMPONENT_SCHEMA_OWNER. I was already aware of the documented change to WLSSchemaDataSource in 14.1.2. Before modifying the existing domain, however, I wanted to establish whether the failure matched…
A client contacted me after an operating system upgrade and the restart of an Oracle Fusion Middleware environment. The application servers were running. The ADF applications appeared healthy. Both Oracle Reports Server processes were also reported as running. Yet report generation failed. Even a simple request to display the Reports job list returned an error: The investigation led somewhere else:…
More and more often, we are contacted to assess, challenge, and advise on the migration of Oracle Fusion Middleware platforms to the cloud. These discussions usually involve critical environments based on Oracle WebLogic Server, Oracle Forms, and sometimes Oracle Reports. The objective is rarely just to “move to the cloud”. It is about understanding what can realistically be migrated, what…
A customer recently asked me about the difference between Java Web Start and the Forms Standalone Launcher for running Oracle Forms applications. I found it a very good question. From the user’s perspective, both methods look similar: the Forms application opens in its own Java window. The real difference is how the application is launched, deployed, secured, and maintained on…
This short blog is to share with you an issue we faced at a customer during Oracle Fusion Middleware 14 installation. Introduction and Symptoms An important step in the installation process is the Oracle Fusion Middleware Metadata repository creation using the RCU (Repository Creation Utility) which creates the necessary schemas for the components. But when running the Repository Creation Utility…
We are frequently involved in Oracle Fusion Middleware Forms and Reports installation or upgrade. For one of our customers, I upgraded Oracle Forms from version 12.2.1.4 to version 12.2.1.19, and this time I got an unusual issue… Our dbi services Middleware team is involved since long time in Oracle Fusion Middleware, here is a blog from my colleague Arnaud published…
In my previous blog named “Changing Fusion Middleware repository database“, I explained how to move a Fusion Middleware repository database from one host to a new host. During the run of this exercise, I came over an issue with the chghost.sh script failing to start the WebLogic Administration Server with the following error: Investigating on the error, I find out…
In my previous blog named “Changing Fusion Middleware Forms and Reports repository database“, I explained how to move a Fusion Middleware Forms and Reports repository from one database to a new database where some other repositories already exist. In this blog, I will explain how to move Fusion Middleware repositories from one database to a brand new database. The Fusion…
