Solution : https://service.sap.com/sap/support/notes/1598376 (SAP Service marketplace login required)
Key words : 
symptom back ground system apps, uid=swg1ic76118 solution increase, back ground system applications, dynamic registry variable setting, prerequisites apar ic69285 added, registry variable setting, terms db2 luw, zrc=0xfffffb36=-1226 reason, asynchronous index cleanup, db2set db2_pmodel_settings=max_background_sysapps
Related Notes : 
       
| 1363170 | DB6: Installing fix packs for DB2 V9.7 (Windows) | 
| 1363169 | DB6: Installing fix packs for DB2 V9.7 (UNIX + Linux) | 
| 1346902 | DB6: Known Errors and available Fixes in DB2 9.7 for LUW | 
| 1329179 | DB6: DB2 9.7 Standard Parameter Settings |