Solution : https://service.sap.com/sap/support/notes/445814 (SAP Service marketplace login required)
Key words : 
additional key words point-, prerequisites dbmgui version <= 7, time log entries, log entries, dbmgui versions >= 7, restore log, specific time, -time recovery, restore database, restore data
Related Notes : 
       
| 434645 | Point-in-time recovery: What must I be aware of? |