Depurar Usuarios OpenWells

 SELECT * FROM ALVEARC.TABLE_UADOW

ALTER TABLE ALVEARC.TABLE_UADOW MODIFY CUENTA VARCHAR2(100);

UPDATE MD_SITE_USER SET IS_DISABLED='Y' WHERE USER_OR_GROUP='U'

MERGE into EDMADMIN.MD_SITE_USER t1

using (SELECT * FROM ALVEARC.TABLE_UADOW) t2

on (UPPER(t1.USER_NAME)=UPPER(t2.CUENTA))

when matched then 

update set t1.is_disabled='N'

where t1.user_or_group='U'