A user wants to connect to the database instance from an application that is running on a remote machine. Which tools should the DBA use to establish the required configuration to ensure that the user is able to connect to the database instance？（） Data Pump。 Oracle Net Manager。 Oracle Enterprise Manager。 Oracle Universal Installer （OUI）。 Database Configuration Assistant （DBCA）。
国家机关不得为保证人，但经国务院批准为使用外国政府或者国际经济组织贷款进行转贷的除外。
While tuning a SQL statement， the SQL Tuning Advisor finds an existing SQL profile for the statement that has stale statistics available. What would the optimizer do in this situation？（） It updates the existing SQL profiles with current statistics。 It makes the statistics information available to GATHER_STATS_JOB。 It initiates the statistics collection process by running GATHER_STATS_JOB。 It logs a warning message in the alert log so that the DBA can perform statistics collection manually。
标准麻花钻的切削部分由（）刃、六面组成。 二。 三。 四。 五。
When comparing capacity-to-capacity， the IBM Rear Door Heat eXchanger helps provide more advantages than other available thermal environment solutions， usually at a fraction of the cost. Which of the following statements is NOT an advantage of the IBM Rear Door Heat eXchanger？ （） The IBM Rear Door Heat eXchanger may dramatically unburden existing AC units by cooling the air before it exhausts from the electronics into the hot aisle.。 The IBM Rear Door Heat eXchanger is a "hang， plug， and run" design so the units may be added quickly.。 The IBM Rear Door Heat eXchanger is equipped with two fans to help maintain water temperature at 18C （64.4F） and provide even air flow.。 The IBM Rear Door Heat eXchanger is designed to support a 42U rack.。
水利水电工程中的“三条红线”不包括以下的哪项（）
