迁移Oracle数据库时候，配置数据源的用户需要权限如下：

grant connect                  to pgchk;

grant select any table         to pgchk;

grant select any dictionary    to pgchk;

grant select_catalog_role      to pgchk;

grant execute on dbms_metadata to pgchk;

grant select any sequence      to pgchk;

grant create any procedure     to pgchk;

grant create any directory     to pgchk;

grant create any type          to pgchk;

grant alter any trigger        to pgchk;