Solution : https://service.sap.com/sap/support/notes/992064 (SAP Service marketplace login required)
Key words : 
/usr/sap/<sapsid>/sys/exe/run/python_support /usr/sap/<sapsid>/trx<instance_number>/exe/python_support 4, python /usr/sap/<sapsid>/trx<instance_number> /exe/python_support/ checkbia, python /usr/sap/<sapsid>/trx< instance_number>/exe/python_support/ checkbia, source /usr/sap/<sid>/trx<instance_number>/trexsettings, /usr/sap/<sid>/trx<instance_number>/trexsettings, run bwa sanity check, script wich enabled performance checks, bia system check script checkbia, investigating bia problems attach, <sapsid>adm user
Related Notes : 
       
| 1385305 | BWA 7.00: Throughput measures of HP C3000 | 
| 1318214 | BWA 7.00: Suspicion of bad query performance | 
| 1313411 | BWA 7.00: Revision 50 | 
| 1283985 | BIA 7.00: Revision 49 | 
| 1273695 | BIA 7.00: BIA System Check error - max open files is 1024 | 
| 1231097 | BIA 7.00: Revision 48 | 
| 1178408 | BIA 7.00: Revision 47 | 
| 1174373 | BIA 7.00: Revision 46 | 
| 1173319 | BIA 7.00: error "port missing for host" | 
| 1162706 | BIA 7.00: Revision 45 | 
| 1155479 | BIA 7.00: Revision 44 | 
| 1073921 | TREX 7.0: BIA System Check ends with error 5508 | 
| 999840 | BIA 7.00: Revision 31 | 
| 995756 | BIA 7.00: Revision 30 | 
| 991549 | BIA 7.00: Service connection for BIA support | 
| 984034 | BIA 7.00: BI Accelerator High Availability | 
| 979609 | BIA 7.00: Move a BIA box from Test to Production Environment | 
| 883726 | BIA 7.00: Central Note SAP NetWeaver BI accelerator | 
| 883725 | BIA 7.00:Updating SAP NetWeaver04s BI accelerator | 
| 875400 | BIA 7.00/7.20: Install SAPNetWeaver 7.0 BI accelerator |