ORA-19905: log_archive_format must contain %s, %t and %r

ORA-19905:- this error generate due to incorrect Archive log format in oracle Release 12.1.0.0.1.0.

Problem:-
 SQL> startup;
 ORA-19905: log_archive_format must contain %s, %t and %r

 SQL> startup mount;
 ORA-19905: log_archive_format must contain %s, %t and %r

Solution:
Also solution is given in metalink note 283507.1

  - create pfile from spfile using below command

 SQL> create pfile from spfile;

 File created.

 - got to oracle pfile location and edit the 'log_archive_format' parameter

 [oracle@dns1 prmdb]$ cd /u01/app/oracle/product/12.1.0.0/db_1/dbs/

 [oracle@dns1 dbs]$ vi  initprmdb.ora

 -----------------before update----------------------------------

 prmdb.__db_cache_size=1979711488
 prmdb.__java_pool_size=16777216
 prmdb.__large_pool_size=16777216
 prmdb.__oracle_base='/u01/app/oracle'#ORACLE_BASE set from environment
 prmdb.__pga_aggregate_target=2097152000
 prmdb.__sga_target=3154116608
 prmdb.__shared_io_pool_size=0
 prmdb.__shared_pool_size=1073741824
 prmdb.__streams_pool_size=33554432
 *.audit_file_dest='/u01/app/oracle/admin/prmdb/adump'
 *.audit_trail='db'
 *.compatible='12.1.0.0.0.0'
 *.control_files='/u01/app/oracle/oradata/prmdb/control01.ctl','/u01/app/oracle/oradata/prmdb/control02.ctl'
 *.cursor_sharing='FORCE'
 *.db_block_size=8192
 *.db_domain=''
 *.db_name='prmdb'
 *.diagnostic_dest='/u01/app/oracle'
 *.dispatchers='(PROTOCOL=TCP) (SERVICE=prmdbXDB)'
*.log_archive_dest_1='LOCATION=/u01/Archive'
*.log_archive_format='arch_%t_%s'
 *.memory_max_target=0
 *.memory_target=0
 *.open_cursors=1500
 *.pga_aggregate_target=2097152000
 *.processes=1000
 *.remote_login_passwordfile='EXCLUSIVE'
 *.session_cached_cursors=1000
 *.sga_target=3154116608
 *.timed_statistics=TRUE
 *.undo_tablespace='UNDOTBS1'

--------------------After update------------------------------------
 prmdb.__db_cache_size=1979711488
 prmdb.__java_pool_size=16777216
 prmdb.__large_pool_size=16777216
 prmdb.__oracle_base='/u01/app/oracle'#ORACLE_BASE set from environment
 prmdb.__pga_aggregate_target=2097152000
 prmdb.__sga_target=3154116608
 prmdb.__shared_io_pool_size=0
 prmdb.__shared_pool_size=1073741824
 prmdb.__streams_pool_size=33554432
 *.audit_file_dest='/u01/app/oracle/admin/prmdb/adump'
 *.audit_trail='db'
 *.compatible='12.1.0.0.0.0'
 *.control_files='/u01/app/oracle/oradata/prmdb/control01.ctl','/u01/app/oracle/oradata/prmdb/control02.ctl'
 *.cursor_sharing='FORCE'
 *.db_block_size=8192
 *.db_domain=''
 *.db_name='prmdb'
 *.diagnostic_dest='/u01/app/oracle'
 *.dispatchers='(PROTOCOL=TCP) (SERVICE=prmdbXDB)'
*.log_archive_dest_1='LOCATION=/u01/Archive'
*.log_archive_format='arch_%r_%t_%s'
 *.memory_max_target=0
 *.memory_target=0
 *.open_cursors=1500
 *.pga_aggregate_target=2097152000
 *.processes=1000
 *.remote_login_passwordfile='EXCLUSIVE'
 *.session_cached_cursors=1000
 *.sga_target=3154116608
 *.timed_statistics=TRUE
 *.undo_tablespace='UNDOTBS1'

 [oracle@dns1 dbs]$ sqlplus

 SQL*Plus: Release 12.1.0.0.1.0 Production on Mon Mar 3 01:32:10 2014

 Copyright (c) 1982, 2009, Oracle.  All rights reserved.

 Enter user-name: /as sysdba
 Connected to an idle instance.

SQL>create spfile from pfile;
File created.

 SQL> startup
 ORACLE instance started.

 Total System Global Area 5261217792 bytes
 Fixed Size                  2222560 bytes
 Variable Size            3271558688 bytes
 Database Buffers         1979711488 bytes
 Redo Buffers                7725056 bytes
 Database mounted.
 Database opened.

 SQL> archive log list;
 Database log mode              Archive Mode
 Automatic archival             Enabled
 Archive destination            /u01/Archive
 Oldest online log sequence     760
 Next log sequence to archive   762
 Current log sequence           762

 SQL> alter system switch logfile;
 System altered.

 SQL> /
 System altered.

 SQL> archive log list;
 Database log mode              Archive Mode
 Automatic archival             Enabled
 Archive destination            /u01/Archive