Oracle E-Business Suite (EBS) Release 12.2 introduces a dual file system architecture with online patching.
To add a secondary node to R12.2, prepare files from the primary application tier, create tar archive, transfer, unpack, and prepare the new node.
Prepare pairs file for node-specific configurations and clone the secondary node for context instantiation, registering WebLogic managed servers, and starting relevant services.
For removing an application tier node in R12.2, execute adProvisionEBS with necessary options and considerations like backups, post-clone validations, AutoConfig runs, NTP clock synchronization, and monitoring practices.