ORA-00056
        DDL lock on object 'string.string' is already held in an incompatible mode
        
        
        Cause
        An attempt was made to acquire a Data Definition Language (DDL) lock that was already locked.
        Action
        This happens if you attempt to drop a table that has parse locks on it.
        
     
    
    
        ORA-00056
        DDL lock on object 'string.string' is already held in an incompatible mode
        
        
        Cause
        An attempt was made to acquire a DDL lock that is already locked.
        Action
        This happens if you attempt to drop a table that has parse locks on it.
        
     
    
    
        ORA-00056
        DDL lock on object 'string.string' is already held in an incompatible mode
        
        
        Cause
        An attempt was made to acquire a DDL lock that is already locked.
        Action
        This happens if you attempt to drop a table that has parse locks on it.