[问答题] 如果想查看showmessage过程的帮助信息，请你说出两种获取帮助信息的方式。  

论述往复活塞式压缩机卡住或咬住或撞裂的原因。 You work as a database administrator for Certkiller .com. You are working on Oracle Database 10g. To forward client connections to an instance， the listener must know information such as the name of the instance and where the instance’s ORACLE_HOME is located. How does the listener get this information？（） ["It gets it from the parameter file.","The listener prompts for details on startup.","The listener gathers information from the control file.","The instance automatically registers with the default listener.","The listener gets this information through thelistener.orafile."] 热油炉在启动时高温热油温度计指针（）设计值（温度调节器指针） ["高于","等于","低于"] 什么是文化情境？ Because of a logical corruption in your production database， you wanted to perform Tablespace Point in Time Recovery （TSPITR）. But before you start the recovery，you queried the TS_PITR_OBJECTS_TO_BE_DROPPED view and realized that there are a large number of objects that would be dropped when you start the recovery by using this method. You want to preserve these objects.  Which option must you use to perform TSPITR and preserve the object？（） [" Perform Export before TSPITR and Import after TSPITR"," Move objects to another schema that has the same tablespace assigned"," Perform Incomplete Recovery before TSPITR with the Log Sequence Number （LSN）"," Perform Incomplete Recovery before TSPITR with the System Change Number （SCN）"] 如果想查看showmessage过程的帮助信息，请你说出两种获取帮助信息的方式。