Answer: The clonedb is an RMAN
enhancement that allows for superfast database cloning from
an RMAN backup using direct NFS (DNFS).
The clonedb functionality appears to be within the
(by Earl Shaffer): The clonedb utility
provides a way to easily and quickly create copies of
databases on network attached storage (NAS), using a thin
provisioning approach integrated with Oracle Database.
Cloning a production database is a common technique used to
help develop and test changes to applications and their
surrounding environments. Before a new operating system
release, storage software, or application version is
installed in a production environment, thorough testing is
needed using production data.
This is usually accomplished by copying the production
database to a test environment. In addition, to the test
environment, copies of the production database are also made
to the development environments where application developers
are creating or modifying applications and testing them. All
of these copies require large amounts of storage to be
allocated and managed. Using thin provisioning, clonedb
greatly reduces the amount of storage needed for clones of
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