In Nutanix Database Service (NDB), patching Oracle database engines requires the "Update" button to be available on the database server VM’s management interface. If this button is missing, it typically indicates a configuration issue preventing NDB from performing the patching operation. The most common and critical reason is that the operating system (OS) credentials for the database server VM have not been set or registered with NDB. These credentials are necessary for NDB to authenticate and execute patching tasks on the VM, such as accessing the Oracle software and applying updates via a software profile.
Option A is correct because missing OS credentials prevent NDB from establishing the required connection to the VM, disabling the Update button.
Option B (Database parameters are missing) is incorrect because while database parameters are important for configuration, they do not directly control the visibility of the Update button for patching.
Option C (Oracle DB engines cannot be patched) is incorrect as NDB explicitly supports patching Oracle databases when properly configured.
Option D (Software profile is not published) is incorrect because an unpublished software profile might limit availability to users, but the Update button’s presence relies on VM connectivity, not profile publication status.
To resolve this, the administrator must register valid OS credentials for the VM in NDB, enabling the patching functionality.
References
Nutanix Database Service (NDB) User Guide, Chapter 4: Managing Software Profiles, Section: Patching Database Engines
Nutanix Support & Insights, Knowledge Base Article: "Troubleshooting Missing Update Button in NDB"
Nutanix Certified Professional - Database Automation (NCP-DB) v7.5Blueprint, Section 4: Manage Database Software Profiles
