Question: I am having trouble making a
table accept Chinese character sets using UTF8. If I am
directly running this insert into Chinese char values('塚') statement
in toad its inserting the value OK, but I cannot do it with Java.
Answer: Sadly, storing Chinese characters
is a nightmare. Chinese is a double-byte
character set, and you need to carefully set-up the NLS parameters
and make sure to use the CHINESE_CHINA.WE8ISO8859P1 character set.
An Oracle character set does not support storing Chinese
characters in a VARCHAR2 column, and you need an NVARCHAR2 column to
store Chinese characters.
This may help, my notes on using the
NLS_LANG parameter.
In windows see NLS_LANG in the registry. The NLS_LANG variable
is in the Home0 directory in the Windows registry is not the only
NLS_LANG, and you need to locate the Oracle directory in the
registry and find NLS_LANG.
This variable may be set to "NA", and a change to
CHINESE_CHINA.WE8ISO8859P1 may fix your issue.
Also see MOSC Note 143783.1 on storing Chinese characters.
In UNIX/Linux, you can set these to whatever you wish'the date
format of the following example is the standard date format used for
recovery, e.g., for UNIX (csh):
> setenv NLS_LANG
CHINESE_CHINA.WE8ISO8859P1
> setenv NLS_DATE_FORMAT 'YYYY-MM-DD:hh24:mi:ss'
Try these setting for inserting Chinese characters:
NLS_CHARACTERSET is UTF8
Client NLS_LANG = UTF8
Client
Region Settings = Simplified Chinese (PRC)
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