Solution : https://service.sap.com/sap/support/notes/1497989 (SAP Service marketplace login required)
Summary : 
      Use of report RSR_CACHE_RSRV_CHECK_ENTRIES in SAP NetWeaver BW may lead to errors when deleting outdated cache entries for mode 5 'BLOB/Cluster Enhanced' or higher. Failures include abrupt termination with a short dump or indefinite execution. Despite successful deletions, the report inaccurately reports no entries found. This issue stems from incomplete adaptation post-inventing the enhanced cache mode. Remediation involves importing the appropriate Support Package for various BW versions, available post-release of specified SAP Notes describing each package. For urgent fixes, consult SAP Note 875986 for preliminary versions via SNOTE.
Key words : 
software component   sap_bw                        business inform, newer cache mode 5 'blob/cluster enhanced', t55 blob/cluster enh, 'blob/cluster enhanced' cache, t60 shared objecthereafter save, delete outdated cache entries, solution sap netweaver bw 7, newer cache modes, deleted cache entries, olap cache reason
Related Notes : 
       
| 1471463 | SAPBWNews NW BW 7.01 ABAP SP08 | 
| 1468668 | SAPBWNews NW7.0 BW ABAP Support Package 25 | 
| 1450990 | SAPBWNews NW BW 7.02 ABAP SP05 | 
| 1392433 | SAPBINews NW7.11 BW ABAP Support Package 05 | 
| 1107434 | OLAP cache consultation: Long wait times due to locks | 
| 1026944 | New cache mode with no directory for BI 7.0 | 
| 784979 | Deletion of old cache entries |