Solution : https://service.sap.com/sap/support/notes/856226 (SAP Service marketplace login required)
Key words : 
typei_methode importing type char70i_text1 importing type char40i_text2 importing type char40, methodname   level visibility- add_info_into_enqstack   static method publicparameters, public       type     rs_boolin table rsadmin add parameter, private     type     char25- p_message_nr   static attr, terms olap cache wrong data logging reason, private     type     int4- n_logging_on   static attr, i_line importing type int4, i_text3 importing type char12, type- p_log_id   static attr, sapbwnews bw            sp14 netweaver'04 stack 14
Related Notes : 
       
| 1275248 | Selective logging on OLAP cache activities | 
| 1107434 | OLAP cache consultation: Long wait times due to locks | 
| 1030147 | Program for deleteing the cache logs BW 3.x | 
| 959405 | Cache enqueues are not set | 
| 949151 | Deleted selections in the cache are still used in OLAP | 
| 914677 | Long runtime in the cache with export to XSTRING | 
| 914672 | GETWA_NOT_ASSIGNED short dump in CL_RSR_CACHE_MM_FINITE | 
| 913324 | Cache commit time is relatively long in the statistics | 
| 860013 | Query cannot use cache -missing query name in cache | 
| 859456 | Increasing performance using the cache | 
| 857356 | Query performance, cache entry is not written | 
| 856221 | Deletion of entire cache with BLOB and Cluster table | 
| 848055 | Deactivating the cache statistics for read accesses | 
| 838870 | Correction: Calling a changed function module | 
| 836439 | SAPBWNews BW Support Package 14 NW'04 Stack 14 RIN | 
| 791065 | OLAP cache with flat files -> cache is not used | 
| 783252 | SAPBWNews BW 3.1 Content Support Package 22 | 
| 783170 | SAPBWNews BW 3.0B Support Package 28 |