oracle建用户给权限
create user dding identified by try1now --default tablespace test; --建用户
grant dba to dding;--授予DBA权限
drop user "用户名" cascade
grant select any table to dding;--授予查询任何表
create user dding identified by try1now --default tablespace test; --建用户
grant dba to dding;--授予DBA权限
drop user "用户名" cascade
grant select any table to dding;--授予查询任何表