多项选择题
Which three tasks can be performed using a duplicate database? （）(Choose three.)
A. Testing the backup and recovery procedures
B. Testing the upgrade of an Oracle database to a new release
C. Testing the effect of an application changes on database performance
D. Continuously updating archive log files from the target database to support failover
相关考题
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单项选择题
Examine the CREATE DISKGROUP command used to create a disk group: SQL> CREATE DISKGROUP misc EXTERNAL REDUNDANCY DISK ORCL: FRA3 NAME misc1, ORCL: FRA4 NAME misc2; In which situation would you use this method of disk group creation?（）
A. When two-way disk mirroring is required for the allocation units
B. When three-way disk mirroring is required for the allocation units
C. When using hardware mirroring or RAID
D. When disk mirroring is required for the Automatic Storage Management (ASM) disks -
单项选择题
Inwhichcasesisreferencepartitioningeffectiveinenhancingperformance？（）
A. It is effective only in partition pruning.
B. It is effective only in partitionwise joins provided that the query predicates are different from the partitioning key.
C. It is effective in both partition pruning as well as partitionwise joins provided that the query predicates are identical to the partitioning key.
D. It is effective in both partition pruning as well as partitionwise joins irrespective of whether the query predicates are different from or identical to the partitioning key. -
单项选择题
You executed the following commands in a database session: What could have caused the recycle bin to clean up?（）
A. There is demand for space from the new table
B. The undo tablespace does not have sufficient free space
C. The new table name is the same as the table name in the recycle bin
D. The temporary tablespace that is assigned to you does not have sufficient free space
