Can't insert arabic characters into oracle database

Question

I got problems while reading arabic characters from oracle in java using JDBC driver, the main problem was i couldn\'t find the proper character encoding to get the correct data

Answer 1

First you may check the NLS_CHARACTERSET parameter of your database using the SQL*PLUS command :-

select * from v$nls_parameters where parameter = 'NLS_CHARACTERSET';

the result should be

PARAMETER

VALUE

NLS_CHARACTERSET

AR8MSWIN1256

if it's not, you have to change the value of this parameter using :-

• hit WINDOWS KEY + r on your keyboard

• write :- SQLPLUS sys as sysdba

• press Enter then enter the password or just hit another Enter

• issue the following commands :

• SHUTDOWN IMMEDIATE

• STARTUP RESTRICT

• ALTER DATABASE CHARACTER SET INTERNAL_USE AR8MSWIN1256;

• ALTER DATABASE CHARACTER SET AR8MSWIN1256;

• SHUTDOWN IMMEDIATE

• STARTUP

• change the value of the NLS_LANG registry string into AMERICAN_AMERICA.AR8MSWIN1256

  if your operating system is a flavor of UNIX use

AR8ISO8859P6 instead of AR8MSWIN1256 as the value of NLS_CHARACTERSET

• DON'T use National datatypes (i.e NVARCHAR, NTEXT, or NCLOB ) in your database unless you are going to use other languages than (Arabic and English) inside your database

• AR8MSWIN1256 character set is sufficient for mixing arabic and english inside the same field (as far as I know).

TAKEN FROM

• https://www.youtube.com/watch?v=zMphHE78imM

• https://ksadba.wordpress.com/2008/06/10/how-to-show-arabic-characters-in-your-client-app/

Answer 2

Check your oracle version. if it old it can't support UTF16.

here is an article -- hope it will be useful.

http://docs.oracle.com/cd/B19306_01/server.102/b14225/ch6unicode.htm