Amazon Web Services has offered Relational Database Service as part of their cloud offering since 2011. These days, RDS provides easy to deploy, on-demand database-as-a-service for MySQL, Oracle, and SQL Server. When you compare it to essentially any other method of hosting and licensing Oracle, RDS seems to have a variety of really appealing qualities.
With RDS/Oracle, you don’t really need a DBA to take care of your database. With the notable exception of tuning, most of the DBA tasks, such as database creation and configuration, backups, upgrades, and disaster recovery are simply features of the service.
Let’s first discuss how RAC traffic works before continuing. Environment for the discussion is: 2 node cluster with 8K database block size, UDP protocol is used for cache fusion. (BTW, UDP and RDS protocols are supported in UNIX platform; whereas Windows uses TCP protocol).
UDP protocol, fragmentation, and assembly
UDP Protocol is an higher level protocol stack, and it is implemented over IP Protocol ( UDP/IP). Cache Fusion uses UDP protocol to send packets over the wire (Exadata uses RDS protocol though).