Oracle8i Parallel Server Concepts Release 2 (8.1.6)  Part Number
A76968-01      Go to previous page Go to next page  Inter-
Instance Coordination  This chapter provides a detailed
discussion of the inter-instance coordination activities that
take place in a cluster. As mentioned in Chapter 3, Oracle uses
locks within a cluster to coordinate lock resources, data, and
inter-instance data requests. This chapter describes the details
about how Oracle coordinates these resources.  Topics in this
chapter include:   Coordination of concurrent tasks within a
cluster is called synchronization. Resources such as data blocks
and locks must be synchronized as nodes within a cluster acquire
and release ownership of them. The synchronization provided by
Oracle Parallel Server maintains cluster-wide concurrency of the
resources and in turn ensures the integrity of the shared data.
The key to successful parallel processing is to divide the tasks
that require resources among the nodes so that very little
synchronization is ne