RMAN-06012
        channel: string not allocated
        
        
        Cause
        A RELEASE command was found for a channel identifier that was not yet allocated.
        Action
        Correct the channel identifier, or add an ALLOCATE CHANNEL command.
        
     
    
    
        RMAN-06012
        channel: string not allocated
        
        
        Cause
        A RELEASE command was found for a channel identifier that was not yet allocated.
        Action
        Correct the channel identifier, or add an ALLOCATE CHANNEL command.
        
     
    
    
        RMAN-06012
        channel: string not allocated
        
        
        Cause
        A RELEASE command was found for a channel identifier that was not yet allocated.
        Action
        Correct the channel identifier, or add an ALLOCATE CHANNEL command.