[oracle@rhel ~]$ echo $ORACLE_SID

xxxx

[oracle@rhel ~]$ sqlplus / as sysdba

SQL*Plus: Release 11.2.0.4. Production on Tue Sep  :: 

Copyright (c) , , Oracle.  All rights reserved.

Connected to an idle instance.

SQL> select userenv('language') from udal;

select userenv('language') from udal

*

ERROR at line 1:

ORA-01034: ORACLE not available

Process ID: 0

Session ID: 0 Serial number: 0

[oracle@rhel ~]$ sqlplus sys/@sznfpt as sysdba

SQL*Plus: Release 11.2.0.4. Production on Tue Sep  :: 

Copyright (c) , , Oracle.  All rights reserved.

Connected to:

Oracle Database 11g Enterprise Edition Release 11.2.0.4. - 64bit Production

With the Partitioning, OLAP, Data Mining and Real Application Testing options

SQL>

SQL>

SQL> alter user scott account unlock;

User altered.

SQL>

SQL>

SQL> alter user scott identified by ;

User altered.

SQL>