Oracle认证考试
Records from the data dictionary information are stored in which of the following database memory areas?（）A、Library cache B、Row cache C、Session UGA D、Buffer cache
题目
Records from the data dictionary information are stored in which of the following database memory areas?（）
- A、Library cache
- B、Row cache
- C、Session UGA
- D、Buffer cache
参考答案和解析
相似问题和答案
第1题：
You are the database administrator for a retail company. The company owns 270 stores. Every month, each store submits approximately 2,000 sales records, which are loaded into a SQL Server 2000 database at the corporate headquarters.
A Data Transformation Services (DTS) package transforms the sales records, as they are loaded. The package writes the transformed sales records to the Sales table, which has a column for integer primary key values. The IDENTITY property automatically assigns a key value to each transformed sales record.
After loading this month's sales data, you discover that a portion of the data contains errors. You stop loading data, identify the problem records, and delete those records from the database.
You want to reuse the key values that were assigned to the records that you deleted. You want to assign the deleted key values to the next sales records you load. You also want to disrupt users' work as little as possible.
What should you do?
A．Export all records from the Sales table to a temporary table. Truncate the Sales table, and then reload the records from the temporary table.
B．Export all records from the Sales table to a text file. Drop the Sales table, and then reload the records from the text file.
C．Use the DBCC CHECKIDENT statement to reseed the Sales table's IDENTITY property.
D．Set the Sales table's IDENTITY_INSERT property to ON. Add new sales records that have the desired key values.
解析：Explanation: DBCC CHECKIDENT is used to check the current identity value for the specified table. It can be set to correct the identity value by specifying the RESEED option with DBCC CHECKIDENT.
Note: Example:
Assume that we have a table called test with an identity column with seed (1,1) and 1000 rows and that we delete row 901 to 950. We could then issue the command
DBCC CHECKIDENT (test, reseed, 900)
And load the 50 missing rows. These rows would get the values 901, 902, …,950 in the identity column.
We should then set the identity value to 1000 again:
DBCC CHECKIDENT (test, reseed, 1000)
So that the next new row will have identity 1001.
Incorrect Answers:
A: Exporting the data from the Sales table and then reloading the data will not correct errors contained in the table as these errors will also be exported as they are part of the data already in the table.
B: Exporting the data from the Sales table and then reloading the data will not correct errors contained in the table as these errors will also be exported as they are part of the data already in the table.
D: The SET IDENTITY_INSERT command allows explicit values to be inserted into the identity column of a table. To reuse the old key values from the rows that was deleted would require manual commands and would be awkward. This is not the best solution.
第2题：
It can be inferred from the last paragraph that outside directors______.
A．may stay for the attractive offers from the firm
B．have often had records of wrongdoings in the firm
C．are accustomed to stress-free work in the firm
D．will decline incentives from the firm
解析：推理题。题干定位在最后一段，没有明确的定位。因此需要分析段落结构，找到作者所暗示的内容。最后一段首先提到独立董事会在公司坏消息出现前离开以避免影响自己的声誉。然后提到了需要奖励来留住他们，否则Simmons女士的例子会重现。
第3题：
A. deduction from the balance per depositor's records
B. addition to the balance per bank statement
C. deduction from the balance per bank statement
D. addition to the balance per depositor's records
第4题：
How would you grant the RVPC user access to specific RMAN database records in the RMAN virtual private catalog？（）
- A、 Issue the grant command from the SYS user （or equivalent） of the target database.
- B、 Issue the grant command from the SYS user （or equivalent） of the recovery-catalog database.
- C、 Issue the grant command from the recovery catalog-owning schema user account in the recovery catalog.
- D、 Issue the grant command from RMAN when connected to the recovery catalog-owning schema.
- E、 Issue the grant command from RMAN when connected to the target database.
正确答案:D
第5题：
B:purchased
C:copied
D:rewritten
第6题：
A into ;
B in ;
C from
第7题：
The text suggests that early settlers in New England
A．were mostly engaged in political activities.
B．were motivated by an illusory prospect.
C．came from different intellectual backgrounds.
D．left few formal records for later reference.
第8题：
The text suggests that early settlers in New England__________.
[A] were mostly engaged in political activities
[B] were motivated by an illusory prospect
[C] came from different backgrounds.
[D] left few formal records for later reference
第9题：
SQL*Loader reads a set of records from a file， generates INSERT commands， and passes them to the Oracle kernel. Oracle then finds places for those records in free blocks in the table and updates any associated indexes. Which SQL*Loader mode is used in this scenario？（）
- A、direct-path load
- B、conventional path load
正确答案:A
第10题：
In which scenario will you use the Flashback Version Query feature？（）
- A、 when you want to restore a table that has been dropped from the Recycle Bin
- B、 when you want to identify the transaction ID of the transaction that deleted some important records from a table
- C、 when you want to recover the schema of a dropped user
- D、when you want to restore a dropped tablespace
正确答案:B