ORA-09925: Unable to create audit trail file

Issue.

-bash-4.1$ sqlplus / as sysdba

SQL*Plus: Release 11.2.0.4.0 Production on Thu Apr 16 09:45:39 2015

Copyright (c) 1982, 2013, Oracle.  All rights reserved.

ERROR:
ORA-09925: Unable to create audit trail file
SVR4 Error: 2: No such file or directory
Additional information: 9925
ORA-01075: you are currently logged on

-bash-4.1$ ps -ef |grep pmon

oracle 12446     1   0 09:43:30 ?           0:00 ora_pmon_OBITEST

oracle 12481 12367   0 09:50:01 pts/1       0:00 grep pmon

-bash-4.1$ kill -9 12446

-bash-4.1$ mkdir -p /data01/TEST/admin/TEST/adump

-bash-4.1$ sqlplus / as sysdba

SQL*Plus: Release 11.2.0.4.0 Production on Thu Apr 16 09:53:13 2015

Copyright (c) 1982, 2013, Oracle.  All rights reserved.

Connected to an idle instance.

SQL> startup;

ORACLE instance started.

Total System Global Area 5463277568 bytes

Fixed Size                  2191256 bytes

Variable Size            1342181480 bytes

Database Buffers         4110417920 bytes

Redo Buffers                8486912 bytes

Database mounted.

Database opened.

SQL>

SQL>