ORA-15333
        disk is not available on all client instances
        
        
        Cause
        An ALTER DISKGROUP ADD DISK statement specified a disk that could not be discovered by all client instances.
        Action
        Check the Oracle ASM and client alert logs for more information. Check operating system permissions for the device and the storage subsystem configuration on all instances.
        
     
    
    
        ORA-15333
        disk is not visible on client instance
        
        
        Cause
        An ALTER DISKGROUP ADD DISK statement specified a disk that could not be discovered by all ASM client instances.
        Action
        Check the ASM alert logs for more information. Check operating system permissions for the device and the storage subsystem configuration.
        
     
    
    
        ORA-15333
        disk is not visible on client instance
        
        
        Cause
        An ALTER DISKGROUP ADD DISK statement specified a disk that could not be discovered by all ASM client instances.
        Action
        Check the ASM alert logs for more information. Check operating system permissions for the device and the storage subsystem configuration.