多项选择题
In Oracle 11g， which recommendations does the SQL Access Advisor generate？（）
A. partitioning recommendations
B. statistics collection recommendations
C. index creation recommendations
D. materialized view recommendations
E. materialized view log recommendations
相关考题
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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 -
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.
