Solution : https://service.sap.com/sap/support/notes/1155479 (SAP Service marketplace login required)
Key words : 
/instguides-> sap netweaver 2004s-> release 2004s-> maintenance-> sps <current_sp_number>-> netweaver 2004s support package stack guide - sps<current_sp_number> update procedure 1, /usr/sap/<sid>/trx<instance number>/exe/python_support, support packages stack guide, parallel tmpx-file writing/reading, support package, existing trex/bia instance, sap system administrator, sap bi system, mf download procedure, update procedure
Related Notes : 
       
| 1158597 | BIA 7.00: Improving indexing performance | 
| 1157582 | BIA 7.00: New feature "package wise read" | 
| 1150438 | BIA 7.00: Wrong result for query on time dependend data | 
| 1101958 | BIA 7.00/TREX 7.10: How to execute landscape overview | 
| 1058533 | TREX/BWA/HANA service connection to customer systems | 
| 992064 | BIA 7.00 + BIA 7.20: BIA system check | 
| 883726 | BIA 7.00: Central Note SAP NetWeaver BI accelerator |