ORA-16444
        ALTER SYSTEM FLUSH REDO TO STANDBY failed due to a corrupted control file or online log file.
        
        
        Cause
        A flush redo operation discovered SCNs greater than a previously failed flush redo operation.
        Action
        This can happen if there are one or more errors that have corrupted the control file or online redo logs. In these cases, flush redo operation is not possible.
        
     
    
    
        ORA-16444
        ALTER SYSTEM FLUSH REDO TO STANDBY failed due to a corrupted control file or online log file.
        
        
        Cause
        A flush redo operation discovered SCNs greater than a previously failed flush redo operation.
        Action
        This can happen if there are one or more errors that have corrupted the control file or online redo logs. In these cases, flush redo operation is not possible.
        
     
    
    
        ORA-16444
        ALTER SYSTEM FLUSH REDO TO STANDBY failed due to a corrupted control file or online log file.
        
        
        Cause
        A flush redo operation discovered SCNs greater than a previously failed flush redo operation.
        Action
        This can happen if there are one or more errors that have corrupted the control file or online redo logs. In these cases, flush redo operation is not possible.