HP0-850 Exam

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Exam : HP HP0-850
Title : Integrating Oracle9i with hp Platforms


1. You create an index on the social security numbers column of your employee information table. What will the RDBMS use to determine if your company employs a person with a certain social security number?
A. direct index access
B. existence check
C. sequential index access
D. The RDBMS does not use an index.
Answer: B

2. A transaction becomes committed and its changes are permanent when _______.
A. Oracle completes the next scheduled checkpoint.
B. the transaction issues the CHECKPOINT statement and Oracle finishes the checkpoint.
C. the transaction issues the COMMIT statement and Oracle completes the corresponding write to the redo log.
D. the transaction issues the COMMIT statement.
Answer: C

3. To avoid a livelock, you should design your transactions to:
A. obtain an exclusive lock and monitor its idle time. If the idle time is too long, release the exclusive lock and try a shared lock first.
B. obtain an update lock before attempting to obtain an exclusive lock, which enables the RDBMS to block new shared locks until your transaction can obtain the exclusive lock it wants and completes execution.
C. wait until all shared locks on the data set are released before attempting to obtain an exclusive lock.
D. acquire an update lock and monitor its idle time. If the idle time is too long, release the update lock and try a shared lock first.
Answer: B

4. Click the Exhibit button.
You query the DB_CACHE_ADVICE view and retrieve the results listed in the table displayed in the Exhibit. If you decrease the current database buffer cache by 92MB, what would be the increase in database buffer cache misses?
A. 13%
B. 33%
C. 74%
D. 100%
Answer: C

5. Which statement is false?
A. The lack of memory can exhibit itself as a disk bottleneck.
B. If the sum of operating system memory, Oracle9i memory, and non-Oracle application memory exceeds physical RAM; memory paging will occur.
C. You should tune memory after you tune the disk subsystem.
D. You should tune the application and SQL before making a final determination of the physical memory in your system.
Answer: C

6. Which network setting enables the application to maximize the usage of the operating system file cache?
A. maximize data throughput for file sharing
B. maximize data throughput for network applications
C. minimize memory used
D. balance
Answer: A

7. Which attribute is not a characteristic of data warehouse systems?
A. little or no growth after data is loaded
B. consolidation of data from various information systems
C. small number of users executing highly complex transactions
D. heavy utilization of temporary workspace
Answer: A

8. What must be true for Oracle9i to collect wait event statistics? The _______.
A. BSTAT/ESTAT tools must be installed
B. Oracle StatsPack must be installed
C. timed_statistics option must be set to 1
D. V$system_event table must be manually created
Answer: C