The BOOKINGS table contains online booking information. When a booking is confirmed, the details are transferred to an archival table BOOKINGS_HIST and deleted from the BOOKINGS table. There is no fixed time interval between each online booking and its confirmation. Because sufficient space is not always available from the delete operations the high-water mark (HWM) is moved up and many rows are inserted below the HWM of the table. The BOOKINGS table has Automatic Segment Space Management (ASSM) and row movement enabled. The table is accessible in 24x7 mode. What is the most efficient method to reclaim the space released by the delete operations in the BOOKINGS table？（） Perform EXPORT, DROP, and IMPORT operations on the BOOKINGS table sequentially。 Shrink the BOOKINGS table by using the ALTER TABLE SHRINK SPACE command。 Move the BOOKINGS table to a different location by using the ALTER TABLE MOVE command。 Deallocate the space in the BOOKINGS table by using the ALTER TABLE DEALLOCATE UNUSED command。
混凝土拌合物和易性包括的含义有（）。 流动性。 保水性。 黏聚性。 耐久性。 抗裂性。
The operator needs to execute a long-running shell script. How can the script be executed so the operator does not have to wait until it is complete to access the command prompt?（） ./script.ksh。 nohup ./script.ksh。 run -b ./script.ksh。 ./script.ksh > nohup.out。
列车在坡道上运行产生的阻力属于（）。 基本阻力。 运行阻力。 附加阻力。 黏着力。
Which of the following are buyer contract terms and conditions that can be defined using WebSphere Commerce Accelerator?（） Customized price list。 Display customization。 Invoice format。 Order approval。 Predefined purchase orders。 Return charge。
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You executed the following command to perform a backup of the USERS tablespace： RMAN> BACKUP TABLESPACE USERS;
Which type of backup would this command perform？（）
