HI,

I had the same problem and I changed some queries with [with (nolock)] and fastfirstrow ,... to reduce locking and rebuild with ALLOW_PAGE_LOCKS = OFF, ONLINE = on !

ALTER INDEX [index_Name] ON [table_name]

REBUILD PARTITION = ALL WITH

( PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF,ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = OFF, ONLINE = on, SORT_IN_TEMPDB = OFF )