二手数据的采集方法有（）。 电话调查法。 问卷调查法。 参考文献查找法。 询问法。 检索工具查找法。
Using the LIST command in Recovery Manager (RMAN), which two pieces of information in the RMANrepository can be listed?（） stored scripts in the recovery catalog。 backups that can be deleted from disk。 backup sets and image copies are obsolete。 backups that do not have the AVAILABLE status in the RMAN repository RMAN。
“视听讲做结合法”在具体运用时应注意哪些问题？
What happens on failure of a pre or post event script？（） The error is logged and HA will continue processing。 If configured， a recovery command will be run to deal with the problem。 An event error is generated and 3 minutes later the cluster will enter config_too_long state。 An event error is generated and 6 minutes later the cluster will enter config_too_long state。
分析结节运动与均制运动的关系。
Which statements are true about logical structures of the Oracle database（）
