SQL> set time on
23:10:22 SQL> set autot trace stat
ERROR:
ORA-28002: the password will expire within 7 days

SP2-0619: Error while connecting
SP2-0611: Error enabling STATISTICS report
23:10:31 SQL> set autotrace traceonly
ERROR:
ORA-24315: illegal attribute type

SP2-0619: Error while connecting
SP2-0611: Error enabling STATISTICS report
23:10:44 SQL> set autotrace on

中心修改用户名密码后正常。原因不明。待查。