Solution : https://service.sap.com/sap/support/notes/524330 (SAP Service marketplace login required)
Key words : 
terms update statistics reason, update optimizer statistics, 21br883i table selected, activated monitoring attribute, symptom brconnect fails, collect statistics, windows nt, br280i thread 1, time stamp 2002-05-17 08, plan_tableprocess died
Related Notes : 
       
| 514205 | Corrections in BR*Tools version 6.20 | 
| 403706 | Corrections in BR*Tools Version 6.10 |