Solution : https://service.sap.com/sap/support/notes/189198 (SAP Service marketplace login required)
Key words : 
connect internal  select contents, additional key words, system global area, drop table takes, psaptemp table space, create table, tablespace_name = 'psaptemp', sga larger, 5 64bit database, created larger
Related Notes : 
       
| 401721 | on upgrading to SAPWeb AS 6.10 ORACLE | 
| 303461 | Additions to Upgrade to Basis 4.6D Oracle | 
| 216881 | SMON process slowly deletes temp. segments PSAPTEMP | 
| 201874 | Additions for upgrade to 4.6C/4.6C SR1/4.6C SR2 Oracle |