Thanks Jimmy, I was under the impression that the NLS_NCHAR_CHARACTERSET being set to AL16UTF16 would allow us to store this data for columns of type NCHAR, NVARCHAR2, and NCLOB What is the purpose of the NLS_NCHAR_CHARACTERSET if that is not the case? Thanks From: oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@xxxxxxxxxxxxx] On Behalf Of Jimmy Brock Sent: Thursday, March 10, 2011 9:40 PM To: oracle-l@xxxxxxxxxxxxx Subject: NLS question NLS_CHARACTERSET=US7ASCII means 256 characters see http://www.asciitable.com/ If you need support beyond ASCII you may want to consider changing the character set to WE8ISO8859P1. But before you do run the CSSCAN utility - it checks to see if your current data can be migrated. csscan fromchar=US7ASCII tochar=WE8ISO8859P1 It will report if character migration will be successful. If you have a very large database running may take a while to complete. -- Jimmy Brock