Solution : https://service.sap.com/sap/support/notes/1372574 (SAP Service marketplace login required)
Key words : 
terms input-ready query, solution sap netweaver bi 7, sap netweaver bi 7, sap nw bi 7, sapbinews nw bi 7, termination cx_sy_ref_is_initial occurs, <g_sx_rto>-r_attr_c->n_r_partition, function module rrk_reset_cgid, 00            import support package 23, import support package 06
Related Notes : 
       
| 1540688 | X299 BRAIN CL_RSDRC_PROVRQ_SRVS GET_SELDR_FROM_PROV_RQDR-01- | 
| 1369212 | SAPBINews NW 7.01 BI ABAP Support Package 06 | 
| 1367864 | SAPBWNews NW BW 7.11 ABAP Support Package 04 | 
| 1367799 | SAPBINews NW7.0 BI ABAP Support Package 23 | 
| 1366071 | The Refresh function does not work for input-ready queries | 
| 1340340 | X299 BRAIN in CL_RSPLS_DELTA_BUFFER_B, READ-06- | 
| 1260071 | SAPBINews NW 7.10 BI ABAP Support Package 08 |