Solution : https://service.sap.com/sap/support/notes/863417 (SAP Service marketplace login required)
Key words : 
filled online redo log files, offline redo log file names, true enables automatic archiving, avoid data loss oracle, locations                     /oracle/<sid>/saparch, online redo log files, online redo log file, extra administrative work mentioned, archive redo log files, log_archive_dest = <directory>/<file prefix>
Related Notes : 
       
| 793113 | FAQ: Oracle I/O configuration | 
| 592393 | FAQ: Oracle | 
| 540434 | FAQ: Crucial Information for Oracle DB Administration | 
| 23070 | Backup and Recovery: Basic Concepts | 
| 391 | Archiver stuck |