Unlock PNET user when locked

[root@oraapps ~]# su - oracle
[oracle@oraapps ~]$ sqlplus '/as sysdba'

SQL*Plus: Release 10.2.0.1.0 - Production on Tue Aug 27 17:56:12 2013

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Connected to:
Oracle Database 10g Express Edition Release 10.2.0.1.0 - Production

SQL> select username,account_status from dba_users where account_status like '%LOCKED%';

SQL> alter user PNET account unlock;