A user sends you an email with the following error message： create table idtable（id number） * ERROR at line 1： ORA- 01110： data file 4： ，，/oracle01/oradata/orcl/users01.dbf ORA-27041： 01116： error in opening database file 4 ORA-unable to open file Linux Error： 2： No such file or directory Additional information： 3 You can choose from the following steps： a. Restore the missing database datafiles. b. Take the missing datafile offline. c. Shut down the database. d. Issue the recover tablespace USERS command. e. Issue the Startup Mount command to mount the database. f. Bring the USERS tablespace online. g. Issue the alter database open command. Which is the correct order of these steps in this case？（） b， a， d， f。 c， a， e， b， d， f， g。 c， e， d， g。 b， d， f 。 e， d， g。
印花税纳税人实行“三自”纳税，即（）。 自行申报缴纳税款。 自行购买印花税票。 自行粘贴税票。 自行计算税额。
After installing WebSphere Commerce V 5.6 using a quick installation， which of the following should be checked to verify the installation？（） The installation log files。 The Commerce tools can be launched and logged into properly。 User ’wpadmin’ has been created。 The structure of the installation directory。 The WebSphere Application Server database schema。
液化石油气充装站应当配有事故应急救援预案涉及的应急工、器具，并（）进行应急救援预案演练。 定期。 不定期。
After creating a WebSphere Commerce instance， an administrator attempts to log on to the WebSphere Commerce Administration Console. The browser reports a "500 Internal Server Error". What could cause this to occur？（） The web server was not started。 The Payments Engine was not started。 The WebSphere Commerce Payments instance was not started。 The WebSphere Commerce application server was not started。 The Configuration Manager service was not started。
An operator must check the status of print queues on a regular basis. Which of the following commands can be used to check on all the print queues?（）
