Oracle Parallel Server
Oracle Parallel Server is an architecture that allows multiple
instances to access a shared database. Oracle Parallel Server offers
the following:
- Superior scalability through distribution of workload across nodes
- High-availability through multiple nodes accessing the database;
if one node fails, the database is still accessible through surviving nodes
- Each Oracle Parallel Server instance, a running instance of
Oracle8i software, is comprised of a System Global Area (SGA) and
Oracle background processes. The SGA is a shared memory region that
contains data and control information for an instance. Users can
connect to any instance to access the information that resides within
the shared database.