How to downgrade InfiniBand switch patches on EXADATA

Lately I was asked to apply the Exadata Quarterly Full Stack Download Patch (QFSDP) of July 2018(Patch 28183368) on the infrastructure components of a virtualized EXADATA X6-2. The objective consists of patching the following components: I found a lot of instructions and examples on how to upgrade the components, but none on how to downgrade… read more