HI Experts,
We are getting missing secondary in Early watch reports. I have tried to repair indexes by using program SAP_INFOCUBE_INDEXES_REPAIR an later update the table DBDIFF with SAP_UPDATE_DBDIFF table. At that time indexes got repaired and couple of later it is showing missing indexes again.
I have checked the process chain and right now there was no delete or create index process type to delete. But some how indexes are deleting and showing in DB02 again ( DB02 -> Diagnostics -> Missing tables & indexes ).
Mayt i know like how secondary indexes are deleting and also relation between db02 and DBDIFF table ?
Please let me know experts if you need more information. 
Thank You!
Hari Prasad B.