I observed a strange thing regarding case insensitive search in XE 11.2.0-1.0 and would like to know, if I am doing someting wrong, or if XE behaves wrong.
I have tables with columns of type NVARCHAR2. If I do a simple select with a simple "like" whereclause, I get the ORA-01401 error, without having a single idea, where this error comes from. Here is my sceanrio:
1) Create a simple table
CREATE TABLE TTEST
2) change your NLS_SORT and NLS_COMP settings to provide case insensitve search capabilities
ALTER SESSION SET NLS_SORT=BINARY_CI;
ALTER SESSION SET NLS_COMP=LINGUISTIC;
3) do a simple select on this table:
SELECT * FROM TTEST WHERE SYM LIKE N'm%';
You will get the "ORA-01401 : inserted value to large for column" error.
If you change your NLS_COMP setting to BINARY, the select is working fine again.