sqlplus sys/password@localhost:1521/cmsx as sysdba

SQL*Plus: Release 11.2.0.1.0 Production on 星期一 7月 21 13:33:13 2014

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连接到:
Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options

SQL> alert user cmsuser account unlock;
SP2-0734: 未知的命令开头 "alert user..." - 忽略了剩余的行。
SQL> alter user cmsuser account unlock;

用户已更改。

SQL>