SQL error 1008 occurred when executing EXEC SQL.

I'm running a native sql statement on the database and do have the following error.

code is like this :

DATA : LANG(2).

LANG = SY-LANGU .

EXEC sql.

select id, nm

into :gw_street_alias-id, :gw_street_alias-nm

FROM street_alias@urbis

where street_id = :gw_street-id and

lang = :LANG

ENDEXEC.

Structure are the same within SAP and Oracle.

does anyone have any idea???

rewards promised