Problems with empty table export after initial installation of Oracle 11g

After Oracle 11g initialization is installed
Note the following points
1, the password case of the problem.
2. The empty table cannot export the problem. [Features of R2 version]
3. The default password is valid for 180 days.

How to resolve:
Run Sqlplus/nolog

Connect/as SYSDBA
alter system set SEC_CASE_SENSITIVE_LOGON=FALSE; --Change Password case
alter system set DEFERRED_SEGMENT_CREATION=FALSE; --The paragraph is not delayed creation, the empty table can be exported.
Alter profile default limit Password_life_time unlimited; --The default password is valid for 180 days and is changed to no time limit.

Problems with empty table export after initial installation of Oracle 11g