Solution : https://service.sap.com/sap/support/notes/1351881 (SAP Service marketplace login required)
Key words : 
extras-->db performance-->maintain db-storage parameters, extras--->maintain db storage parameters, psa tablessize categorydata class solution, goto-->technical attributes-->psa properties, rsadmin parameter introduced 'dataclass_for_psa_of_newds', maintain technical settings, rsadmin parameter introduced, rsadmin table depending, terms technical settings, individual setting override
Related Notes : 
       
| 1467706 | SP25:Technical Settings for PSA table for New Datasource | 
| 1351544 | SP22: Technical Settings for Errorstack tables | 
| 1318496 | Default values: Technical settings for PSA tables | 
| 1310710 | SP21: Changelog tables are created with wrong size category |