ORA-12432: LBAC error: zllegnp:OCIStmtExecute

This is the 3th that occurs the errors:

 ORA-12432: LBAC error: zllegnp:OCIStmtExecute

The instructios were:

Enter user-name: system as sysdba
Enter password:

Connected to:
Oracle Database 11g Release 11.2.0.1.0 - 64bit Production

SQL>  archive log list
Database log mode              No Archive Mode
Automatic archival             Disabled
Archive destination            USE_DB_RECOVERY_FILE_DEST
Oldest online log sequence     2701
Current log sequence           2703
SQL> shutdown immediate
Database closed.
Database dismounted.
ORACLE instance shut down.
SQL> startup mount
ORACLE instance started.

Total System Global Area 6747725824 bytes
Fixed Size                  2213976 bytes
Variable Size            4227860392 bytes
Database Buffers         2483027968 bytes
Redo Buffers               34623488 bytes
Database mounted.
SQL> alter database archivelog;

Database altered.