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OCI is a much more detailed interface that requires
more programmer time and effort to create and debug. Developing an application
that uses OCI can be time-consuming, but the added functionality and incremental
performance gains could make spending the extra time worthwhile. In certain programming
scenarios, OCI improves application performance or adds functionality.
For instance, in high-availability implementations in which multiple systems share
disks using Real Application Clusters, you could write programs using OCI that
allow users to reattach to a second server transparently if the first fails.
12 | Chapter 1: Introducing Oracle
National Language Support
National Language Support (NLS) provides character sets and associated functionality,
such as date and numeric formats, for a variety of languages. Oracle Database
11g features Unicode 5.0 support. All data may be stored as Unicode, or select
columns may be incrementally stored as Unicode. UTF-8 encoding and UTF-16
encoding provide support for more than 57 languages and 200 character sets.


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