There is a Solaris for x86, but EBS is not certified on that. You have to use Sparc Solaris on Sparc servers for running EBS. You can download or start up that cloud Solaris to get familiar with the OS.
How do I know if the Solaris11.3 image above in Oracle Cloud is Sparc or x86?
Since I installed it already and can login as root, what is command to check?
Can VM virtualBox in my laptop be able to emulate sa Solaris11.3 on Sparc?
Can I install OL7 on Sparc?