Solution : https://service.sap.com/sap/support/notes/725489 (SAP Service marketplace login required)
Key words : 
mysql maxdb -> database assistant -> problem analysis -> sql performance, dbs/ada/register_appl_info instance profile parameter, selecting problem analysis -> sql performance -> command monitor, database analyzer collects performance-relevant data, analyse long-running sql commands, identify long-running sql statements, database analyzerthe database analyzer program, warning levels error messages, bc-db-sdb component, reports inefficient database accesses
Related Notes : 
       
| 994590 | High increase in the temporary data area | 
| 820824 | FAQ: SAP MaxDB/liveCache technology | 
| 819641 | FAQ: SAP MaxDB Performance | 
| 767598 | Available SAP MaxDB documentation | 
| 766827 | Composite SAP note: Performance SCM 4.0 | 
| 757884 | IS-Healthcare: Additional indexes for SAP DB | 
| 756826 | IS-MEDIA: Additional indexes for MaxDB |