utilisez-vous UTF-16 + NVARCHAR2 si par chance? par exemple ceci :
SQL> select * from nls_database_parameters where parameter='NLS_NCHAR_CHARACTERSET';
PARAMETER VALUE
------------------------------ ----------------------------------------
NLS_NCHAR_CHARACTERSET AL16UTF16
SQL> drop table test;
Table dropped.
SQL> create table test(a nvarchar2(10));
Table created.
SQL> insert into test values ('test');
1 row created.
SQL> insert into test values ('test 2');
1 row created.
SQL> select listagg(a, ',') within group (order by 1) from test group by 1;
LISTAGG(A,',')WITHINGROUP(ORDERBY1)
--------------------------------------------------------------------------------
t e s t, t e s t 2
vous pouvez lancer un char pour contourner cela. SI cela n'est pas acceptable, vous devez créer un ticket auprès du support Oracle.
SQL> select listagg(to_char(a),',') within group (order by 1) from test group by 1;
LISTAGG(TO_CHAR(A),',')WITHINGROUP(ORDERBY1)
--------------------------------------------------------------------------------
test,test 2
SQL>
