ORA-23409
        could not find an unused refresh group number
        
        
        Cause
        1000 consecutive refresh group numbers, as defined by the rgroupseq number, were already used by rows in sys.rgroup$.
        Action
        Alter the sequence number to be within a legal unused range and destroy unneeded refresh groups.
        
     
    
    
        ORA-23409
        could not find an unused refresh group number
        
        
        Cause
        1000 consecutive refresh group numbers, as defined by the rgroupseq number, were already used by rows in sys.rgroup$.
        Action
        Alter the sequence number to be within a legal unused range and destroy unneeded refresh groups.
        
     
    
    
        ORA-23409
        could not find an unused refresh group number
        
        
        Cause
        1000 consecutive refresh group numbers, as defined by the rgroupseq number, were already used by rows in sys.rgroup$.
        Action
        Alter the sequence number to be within a legal unused range and destroy unneeded refresh groups.