园林树木
You have created a database link， devdb.us.oracle.com， between the databases PRODDB and DEVDB. You want to import schema objects of the HR user using Oracle Data Pump from thedevelopment database， DEVDB， to the production database， PRODDB. You execute the following command on the target database server： $impdp system/manager directory = DB_DATA dumpfile = schemas.dat schemas = hr flashback_time = 2004-02-03 09：00 The command fails， displaying the following error： ORA-39001： invalid argument value ORA-39000： bad dump file specification ORA-31640： unable to open dump file “/home/oracle/schema/schemas.dat” for read ORA-27037： unable to obtain file status What would you do to overcome the error（） remove the dumpfile option in the command。 remove the flashback_time option in the command。 remove the dumpfile option and add the network_link = devdb.us.oracle.com option in the command（Replace thedumpfile option with the network_link = devdb.us.oracle.com）。 add the user， SYSTEM， to the schemas option in the command。 remove the schemas option and add the network_link = devdb.us.oracle.com option in the command 。 add network_link = devdb.us.oracle.com option in the command。
油开关合闸后，蓄电池放电电流表不返回，应立即（）。 拉开操作电源。 拉开合闸电源。 取下合闸保险。
到19世纪中期，英国在亚洲地区完全占领了（）。（1）中国（2）印度（3）新加坡（4）奥斯曼帝国 （1）（2）（4）。 （2）（3）（4）。 （1）（4）。 （2）（3）。
A customer stores environmental settings in the deployment descriptors of an application. Whenever they promote the application version from testing to the production environment, they need to open the archive and modify the deployment descriptor. This process is against their security policy. What approach should you recommend to leverage WebLogic features such that they do not have to modify the application archive for different environments?（） Keep environmental data in the global settings of domain and the application can read it from the domain where it runs.。 Keep environmental data in Deployment Plan XML files. It allows you to change parameters in the deployment descriptor without opening the archive file.。 Keep environmental data in the database because it is the most effective way of parametrizing the environment. 。 Keep archive in exploded format so the customer does not have to open the archive files.。 Eliminate all environmental settings from the application. There should not to be any environmental settings in the application.&e。
You are using Recovery Manager （RMAN） for backup and recovery operations. Your backup and recovery policy is such that you are performing full database backup every Tuesday and Friday. You configure RMAN using the following command：
RMAN>CONFIGURE RETENTION POLICY TO RECOVERY WINDOW OF 4 DAYS；
All backup and archived redo logs generated during the current week are as follows：
Which of the following files will be listed when issuing the REPORT OBSOLETE command on Sunday？ （）
