Oracle 字符集完整说明：
jef:
1.http://blog.china-pub.com/more.asp?name=jefflee&id=1310
2.http://blog.china-pub.com/more.asp?name=jefflee&id=1408
3.http://blog.china-pub.com/more.asp?name=jefflee&id=1470
4.http://blog.china-pub.com/more.asp?name=jefflee&id=1558
5.http://blog.china-pub.com/more.asp?name=jefflee&id=1690
6.http://blog.china-pub.com/more.asp?name=jefflee&id=1798
7.http://blog.china-pub.com/more.asp?name=jefflee&id=1842
8.http://blog.china-pub.com/more.asp?name=jefflee&id=11422
eygle:
1.http://www.eygle.com/archives/2004/09/nls_character_set_01.html
2.http://www.eygle.com/archives/2004/09/nls_character_set_02.html
3.http://www.eygle.com/special/NLS_CHARACTER_SET_03.htm
4.http://www.eygle.com/archives/2004/09/nls_character_set_04.html
5.http://www.eygle.com/archives/2004/09/nls_character_set_05.html
6.http://www.eygle.com/archives/2004/09/nls_character_set_06.html
7.http://www.eygle.com/archives/2004/09/nls_character_set_07.html
8.http://www.eygle.com/archives/2004/09/characterset_subset_superset.html
monkeyai:
1.http://www.itpub.net/viewthread.php?tid=538197