A company runs very large database applications on multiple HP-UX servers. They recently upgraded the device drivers for their fibre channel HBAs and have suffered numerous crashes on several systems. Which feature of Power Systems running AIX would help eliminate this problem during pre-release testing of a new device driver？（） Redundant VIO servers。 Storage Protection Keys。 Electronic Service Agent。 NPIV support in the kernel。
起重机吊一个重物升降时，负载的机械特性（）。 恒功率型。 位能型恒转矩。 反抗型恒转矩。 直线型机械特性。
You define a multiple-row subquery in the WHERE clause of an SQL query with a comparison operator "=". What happens when the main query is executed? （） The main query executes with the first value returned by the subquery.。 The main query executes with the last value returned by the subquery.。 The main query executes with all the values returned by the subquery.。 The main query fails because the multiple-row subquery cannot be used with the comparison operator.。 You cannot define a multiple-row subquery in the WHERE clause of a SQL query.。
You issue the following command： RMAN>CONFIGURE BACKUP OPTIMIZATION ON； What is the result of this command on your backups？（） An incremental backup strategy will be used automatically.。 Read-only datafiles will not be backed up as long as backups of those files already exist and those backups meet established retention criteria.。 RMAN will configure itself for maximum performance at the cost of CPU.。 RMAN will configure itself for minimal OS/CPU impact at the cost of time to back up the database.。 RMAN will automatically compress backups.。
On Monday， you dropped the DEPT table from your schema and then you re-created the DEPT table in your schema. On Wednesday， you have a requirement to restore the DEPT table from the recycle bin. Which statement is correct？（） You can restore the DEPT table by using the Oracle Flashback Drop feature， provided you use the RENAME TO clause.。 You can restore the DEPT table by using the Oracle Flashback Drop feature and a system-generated name will be assigned to the restored table.。 You cannot restore the DEPT table by using the Oracle Flashback Drop feature because a table with the name DEPT already exists in your schema.。 You cannot restore the DEPT table by using the Oracle Flashback Drop feature because the contents of the recycle bin are purged every 12 hours by default.。
A customer purchased a new IBM xSeries x445. They already have a non-IBM industry standard rack with 14U of open space that is being considered to house the new server. The rack houses an existing UPS unit for the entire rack. Which of the following questions is most important to ensure that the power in the datacenter environment is ready for the initial install？（）
