ORA-63995
        fractured block detected in control file: (block string, # blocks string)
        
        
        Cause
        A fractured block or checksum error was detected on reading the control file under no-enqueue control file transaction. The reason could be a stalled concurrent block update.
        Action
        Retry the operation later.
        
     
    
    
        ORA-63995
        fractured block detected in control file: (block string, # blocks string)
        
        
        Cause
        A fractured block or checksum error was detected on reading the control file under no-enqueue control file transaction. The reason could be a stalled concurrent block update.
        Action
        Retry the operation later.
        
     
    
    
        ORA-63995
        fractured block detected in control file: (block string, # blocks string)
        
        
        Cause
        A fractured block or checksum error was detected on reading the control file under no-enqueue control file transaction. The reason could be a stalled concurrent block update.
        Action
        Retry the operation later.