Oddly, a category of EBS architecture questions that I’d thought long-settled is starting to reemerge.  I’ve recently seen several queries along the lines of:

1. Can EBS database nodes and application tier nodes be on different operating systems?
2. Can multiple EBS database nodes be on different operating systems or levels?
3. Can multiple EBS application tier nodes be on different operating systems or levels?

Here are the answers to these questions:

1. Can EBS database nodes and application tier nodes be on different operating systems?

Yes.  In some cases, the operating systems certified for EBS database nodes cannot be run on the application tier. These are called “database tier only” certifications. It is quite common to see this configuration, especially in large EBS environments.

2. Can multiple EBS database nodes be on different operating systems or levels?

No.  From our “Installation Guide: Using Rapid Install” documentation:

“All database tier nodes must be at the same operating system patch level.”

3. Can multiple EBS application tier nodes be on different operating systems or levels?

No. From our “Installation Guide: Using Rapid Install” documentation:

“All application tier nodes must be at the same operating system patch level.”

Here’s a screenshot from our EBS 12.2 documentation (emphasis in red):

References

• Oracle E-Business Suite 12.1 Installation Guide: Using Rapid Install (PDF)
• Oracle E-Business Suite 12.2 Installation Guide: Using Rapid Install (PDF)

Related Articles

• Oracle E-Business Suite Platform Smorgasbord

Source: https://blogs.oracle.com/stevenchan/can-ebs-nodes-be-at-different-operating-system-levels