Hi All
My Database version is Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - 64bit Production.
select * from nls_database_parameters;
NLS_LANGUAGE AMERICAN
NLS_TERRITORY AMERICA
NLS_CURRENCY $
NLS_ISO_CURRENCY AMERICA
NLS_NUMERIC_CHARACTERS .,
NLS_CHARACTERSET WE8MSWIN1252
NLS_CALENDAR GREGORIAN
NLS_DATE_FORMAT DD-MON-RR
NLS_DATE_LANGUAGE AMERICAN
NLS_SORT BINARY
NLS_TIME_FORMAT HH.MI.SSXFF AM
NLS_TIMESTAMP_FORMAT DD-MON-RR HH.MI.SSXFF AM
NLS_TIME_TZ_FORMAT HH.MI.SSXFF AM TZR
NLS_TIMESTAMP_TZ_FORMAT DD-MON-RR HH.MI.SSXFF AM TZR
NLS_DUAL_CURRENCY $
NLS_COMP BINARY
NLS_LENGTH_SEMANTICS BYTE
NLS_NCHAR_CONV_EXCP FALSE
NLS_NCHAR_CHARACTERSET AL16UTF16
NLS_RDBMS_VERSION 11.2.0.1.0
I am trying to insert Japanese Characters 'えています' in NVARCHAR2(250) data type. After inserting into database, Japanese characters are converting to '¿¿¿¿¿' upside down question marks.
During my research on internet i found:
- NLS_CHARACTERSET: declares what character set scheme (code page) is used for encoding CHAR, VARCHAR2, LONG, and CLOB datatypes.
- NLS_ NCHAR_CHARACTERSET: declares what character set scheme (code page) is used for encoding NCHAR and NVARCHAR2 and NCLOB datatypes.
In my Database NLS_ NCHAR_CHARACTERSET value is 'AL16UTF16' so as per above research Japanese characters should get insert in national characterset (NCHAR and NVARCHAR2 and NCLOB), However it is not.
Q1 - Is there any relation between NLS_CHARACTERSET and NLS_ NCHAR_CHARACTERSET?
Q2 - Do we need to have NLS_CHARACTERSET and NLS_ NCHAR_CHARACTERSET values to AL32UTF8 and AL16UTF16 respectively to make NVARCHAR2 working for Japanese characters?
because In another instance NLS_CHARACTERSET value is AL32UTF8 and for NLS_ NCHAR_CHARACTERSET is AL16UTF16 and it is allowing us to insert Japanese characters in both the datatypes (NVARCHAR2).
As per my understanding if only NLS_NCHAR_CHARACTERSET value is AL16UTF16 then it should allow to insert Japanese character in National DataTypes irrespective of NLS_CHARACTERSET.
So why it is not supporting to insert Japanese characters ?
Please anyone can help to understand this concept?
Thanks in Advance