You execute the following command to perform a backup by using Recovery Manager （RMAN）： RMAN> run {allocate channel c1 type sbt; backup datafile 1; } The command errors out. A part of the error message is as follows： RMAN03009： failure of allocate command on c1 channel ORA19554： error allocating device， device type： SBT_TAPE， device name： What could explain why the statement failed？（） sbt is not a valid device type.。 Media Management Library was not loaded.。 The sbt device cannot be used for data file backups.。 No path was defined in the ALLOCATE CHANNEL command.。 The channel is currently being used by another RMAN session.。
封堵缸加油时应提起缸体前端约成（）角以便排出空气。 10°。 5°。 7°。 4°。
A customer needs to create a number of LPARs on a new POWER6 server with some LPARs requiring a dedicated network and other LPARs utilizing Virtual Ethernet via a VIO server. Which limitation must be considered when planning the system configuration？（） A VIO server requires a dedicated LHEA port.。 There is a limit of 32 LPARs per virtual LAN.。 Two VIO servers will be required. A single VIO server can only provide virtual storage or Virtual Ethernet.。 Two VIO servers will be required. One to provide virtual networking and another to provide dedicated networking.。
《电子签名法》中规定，不适用电子签名法的情况有（） 涉及婚姻、收养、继承等人身关系的。 涉及停止供水、供热公用事业服务的。 涉及土地、房屋等不动产权益转让的。 法律、法规规定的不适用电子文书的其他情形。
不属于明太祖采取的加强中央集权措施的是（）。 废除丞相权分六部。 设立锦衣卫。 废行省设立三司。 设立东厂西厂。
Given:
What is the result?（）
