6 Java Overview of Oracle8i Java Support
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Oracle8i National Language Support Guide Release 2 (8.1.6) December 1999 Part No. A76966-01 National Language Support Guide, Release 2 (8.1.6) Part No. A76966-01 Copyright © 1996, 1999, Oracle Corporation. All rights reserved. Primary Author: Paul Lane Contributors: Winson Chu, Jason Durbin, Jessica Fan, Yu Gong, Josef Hasenberger, Claire Ho, Peter Linsley, Tom Portfolio, Den Raphaely, Linus Tanaka, Makoto Tozawa, Gail Yamanaka, Michael Yau, Hiro Yoshioka, Sergiusz Wolicki, Simon Wong Graphic Designer: Valarie Moore The Programs are not intended for use in any nuclear, aviation, mass transit, medical, or other inherently dangerous applications. It shall be the licensee’s responsibility to take all appropriate fail-safe, backup, redundancy and other measures to ensure the safe use of such applications if the Programs are used for such purposes, and Oracle disclaims liability for any damages caused by such use of the Programs. 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Contents Send Us Your Comments ................................................................................................................. xiii Preface........................................................................................................................................................... xv Feature Coverage and Availability .................................................................................................... xv Audience................................................................................................................................................. xv Knowledge Assumed of the Reader ............................................................................................ xv Installation and Migration Information ..................................................................................... xvi Application Design Information ................................................................................................. xvi How Oracle8i National Language Support Guide Is Organized ............................................... xvi Conventions Used in This Manual ................................................................................................. xvii 1 Understanding Oracle NLS Oracle Server NLS Architecture....................................................................................................... 1-2 Locale-Independent Operation................................................................................................... 1-2 Client/Server Architecture ......................................................................................................... 1-4 Standard Features ............................................................................................................................... 1-5 Language Support ........................................................................................................................ 1-5 Territory Support.......................................................................................................................... 1-6 Date and Time Formats ............................................................................................................... 1-7 Monetary and Numeric Formats................................................................................................ 1-7 Calendars ....................................................................................................................................... 1-7 Linguistic Sorting.......................................................................................................................... 1-7 Character Set Support .................................................................................................................. 1-9 Customization Features ................................................................................................................... 1-10 iii Character Set Customization..................................................................................................... 1-10 Calendar Customization............................................................................................................ 1-10 SQL Support ...................................................................................................................................... 1-10 2 Setting Up an NLS Environment Setting NLS Parameters..................................................................................................................... 2-2 Choosing a Locale with NLS_LANG .............................................................................................. 2-4 Specifying NLS_LANG................................................................................................................ 2-5 NLS_LANG Examples ................................................................................................................. 2-5 Overriding Language and Territory Specifications................................................................. 2-6 NLS Database Parameters ........................................................................................................... 2-7 Checking NLS Parameters................................................................................................................. 2-7 NLS Views ..................................................................................................................................... 2-7 OCI Functions................................................................................................................................ 2-8 Language and Territory Parameters .......................................................................................... 2-8 Time Parameters................................................................................................................................ 2-13 Date Parameters................................................................................................................................. 2-13 Date Formats ............................................................................................................................... 2-13 NLS_DATE_FORMAT............................................................................................................... 2-14 NLS_DATE_LANGUAGE......................................................................................................... 2-16 Calendar Parameter .......................................................................................................................... 2-17 Calendar Formats........................................................................................................................ 2-17 NLS_CALENDAR ...................................................................................................................... 2-20 Numeric Parameters ......................................................................................................................... 2-21 Numeric Formats ........................................................................................................................ 2-21 NLS_NUMERIC_CHARACTERS ............................................................................................ 2-21 Monetary Parameters........................................................................................................................ 2-22 Currency Formats ......................................................................................................................