Query entity error

Today all my query entity started giving below error suddenly even I tried with batch size 2

Not sure if this is an issue in DB or in appain. connected system is getting verified 

Expression evaluation error at function a!queryEntity_22r2 [line 21]: An error occurred while retrieving the data. Details: Unexpected error executing query (type: [MRCPFCompanyDT63035], query: [queryentity expression], order by: [[Sort[defaultOrder asc]]], filters:[(active = TypedValue[it=26,v=1])])