Well there are many ways to get Oracle EBS Release 12 installed, I am here going to write about Enterprise Deployments.
Shared vs Non-Shared - when enterprise deployments are considered you may need multiple nodes for your internal Private tier and for your external DMZ tier. The code for EBS has to be available on all the nodes so that it can be accessed by end users through various services like http , forms , concurrent manager... The code becomes easy to maintain if it is Shared and one single repository is used by all these multi-node in an enterprise deployments. Config becomes easy , Patching becomes easy... Having them in the Non-Shared isolates the code and becomes tought to maintain it. Though EBS 12 provides various tools to keep them in sync but it gets complex as you grow. So choosing a Shared file system is a good decision for enterprise deployments.
Shared Storage that are commonly available are NFS/ZFS , in OCI we have FSS
Here is another option that might be interesting in OCI which is attaching a volume to multiple instances.
Please be aware of the limitation and do review before considering this solution.
- Concurrent write operations to block volumes are not provided so basically you can have only one instance write to it at a time. well there must be a solution for this... not one there are many... Cluster Aware Solution. There are many options listed from differnet vendors which you can find here https://en.wikipedia.org/wiki/Clustered_file_system
Oracle Cluster File System so called as OCFS2 (version 2) is a Cluster Aware solution provided by Oracle. Similar solutions are provided by GlusterFS , Veritas , GFS2 , VMFS
In OCI there are three simple steps to get this for your Enterprise Deployments
- Create your EBS deployments and attach block volume to the middleware instances as Read/Write-Sharable
- Setup OCFS2
- Create File Systems on OCFS2
- Mount the File System
- Install/Clone EBS with Shared APPL_TOP Option
