[applprod@erp10 ~]$ watch ps -fu applprod
[applprod@erp10 ~]$ kill -9 82902 84923
[applprod@erp10 ~]$ watch ps -fu applprod
[applprod@erp10 ~]$ cd
You have new mail in /var/spool/mail/applprod

[oraprod@erp10 ~]$ sqlplus / as sysdba

SQL*Plus: Release 12.1.0.2.0 Production on Tue Jun 27 18:35:31 2017

Copyright (c) 1982, 2014, Oracle.  All rights reserved.

Connected to:
Oracle Database 12c Enterprise Edition Release 12.1.0.2.0 - 64bit Production
With the Partitioning, OLAP, Advanced Analytics and Real Application Testing options

SQL> archive log list;
Database log mode        No Archive Mode
Automatic archival        Disabled
Archive destination        /erp/prod/db/data/archive
Oldest online log sequence     55
Current log sequence        56
SQL> exit
Disconnected from Oracle Database 12c Enterprise Edition Release 12.1.0.2.0 - 64bit Production
With the Partitioning, OLAP, Advanced Analytics and Real Application Testing options
[oraprod@erp10 ~]$ ls /erp/prod/db/data/archive
[oraprod@erp10 ~]$ ls
startdb.sh  stopdb.sh
[oraprod@erp10 ~]$ sqlplus / as sysdba

SQL*Plus: Release 12.1.0.2.0 Production on Tue Jun 27 18:38:08 2017

Copyright (c) 1982, 2014, Oracle.  All rights reserved.

Connected to:
Oracle Database 12c Enterprise Edition Release 12.1.0.2.0 - 64bit Production
With the Partitioning, OLAP, Advanced Analytics and Real Application Testing options

SQL> shutdown immediate;
Database closed.
Database dismounted.
ORACLE instance shut down.

SQL> SQL>
SQL>
SQL> startup mount;
ORA-32004: obsolete or deprecated parameter(s) specified for RDBMS instance
ORACLE instance started.

Total System Global Area 2.1475E+10 bytes
Fixed Size      7654304 bytes
Variable Size   2751464544 bytes
Database Buffers  1.8656E+10 bytes
Redo Buffers     59453440 bytes
Database mounted.
SQL> alter database archivelog;

Database altered.

SQL> alter database open;

Database altered.

SQL> alter system switch logfile;

System altered.

SQL> exit
Disconnected from Oracle Database 12c Enterprise Edition Release 12.1.0.2.0 - 64bit Production
With the Partitioning, OLAP, Advanced Analytics and Real Application Testing options
[oraprod@erp10 ~]$ ls /erp/prod/db/data/archive
1_56_943217062.dbf
[oraprod@erp10 ~]$
[oraprod@erp10 ~]$
[oraprod@erp10 ~]$