价格指数法适用于（）设备重置成本的估测。 无帐面原值的。 无现行购置价的。 无财务核算资料的。 无参照物的。 无帐面值的。
In your database, the flash recovery area (FRA) is configured as the default for RMAN backups. You executed the following commands to configure the settings in RMAN: RMAN> CONFIGURE DEVICE TYPE disk PARALLELISM 2 BACKUP TYPE TO BACKUPSET; RMAN> CONFIGURE CHANNEL 1 DEVICE TYPE disk FORMAT '/home/oracle/disk1/%U'; RMAN> CONFIGURE CHANNEL 2 DEVICE TYPE disk FORMAT '/home/oracle/disk2/%U'; You issue the following RMAN command to backup the database: RMAN> RUN 2> { 3> ALLOCATE CHANNEL ch1 DEVICE TYPE disk; 4> BACKUP DATABASE; 5> } Which statement is true about the outcome?（） Only one channel is allocated and the backup is created in the flash recovery area。 Only one channel is allocated and the backup is created in the destination specified for channel 1。 Two channels are allocated and backup sets are created in the destinations specified for channels 1 and 2。 Three channels are allocated and backup sets are created in the destinations specified for channels 1, 2, and FRA。
You are tuning RMAN to optimize performance. You want tape I/O to be asynchronous when you perform tape backups. Which action should you take？（） Set the BACKUP_TAPE_IO_SLAVES parameter to FALSE。 Set the BACKUP_TAPE_IO_SLAVES parameter to TRUE。 Use compression when performing tape backups。 Configure multiple SBT channel。
给电容器充电时，电容器充电电流（）变化。 由小到大。 由大到小。 恒定不变。
Given： What is the result？（） 1。 2。 12。 Compilation fails.。 No output is produced.。 An exception is thrown at runtime.。
You suspect unauthorized data manipulation language （DML） operations on a particular table. You want to track users who are performing the transactions and the values used in the transactions. Also， you plan to transfer these values to another table for analysis.
How would you achieve this？（）
