Solution : https://service.sap.com/sap/support/notes/416782 (SAP Service marketplace login required)
Key words : 
automatic restore/recovery procedure, environment variable br_ntt = 1, temporary database objects, 20 patch level 100 due, restore/recovery, temporary tablespaces, locally managed, oracle release 8, memory area, tablespace psaptemp
Related Notes : 
       
| 659946 | FAQ: Temporary tablespaces | 
| 635552 | Backing up temporary tablespaces with BRBACKUP | 
| 403706 | Corrections in BR*Tools Version 6.10 |