Solution : https://service.sap.com/sap/support/notes/1275248 (SAP Service marketplace login required)
Key words : 
report sap_rsadmin_maintainand register  object   rsr_cache_logginguse, gathered data increases vastly, sap_rsadmin_maintain report againwith, symptom large amounts, case log activity, db table rsr_cache_msg, sap netweaver bi 7, sap nw bi7, logging_onto deactivate logging, cache log reason
Related Notes : 
       
| 1270629 | SAPBINews NW7.0 BI ABAP Support Package 21 | 
| 1260072 | SAPBINews NW7.11 BI ABAP SP02 | 
| 1260071 | SAPBINews NW 7.10 BI ABAP Support Package 08 | 
| 1227876 | SAPBINews NW7.01 BI ABAP Support Package 04 | 
| 859456 | Increasing performance using the cache | 
| 856226 | Logging mechanism to analyse Cache related problems |