OCP-1Z0-053-V12.02-666题
2013-10-08 11:39
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666.You are working in an online transaction processing (OLTP) environment. You use the
FLASHBACKTABLE command to flash back the CUSTOMERS table. Before executing the
FLASHBACK
TABLE command, the system change number (SCN) was 663571. After flashing back the CUSTOMERS
table, you realize that the table is not in the correct state. Now, you need to reverse the effects of the
FLASHBACK
TABLE command. Which is the fastest and the most efficient option to reverse the effects of
the FLASHBACK TABLE command?
A. Restore the backup control file and open the database with RESETLOGS option.
B. Perform point-in-time recovery because flashback cannot be performed again on this table
C. Execute the FLASHBACK DATABASE statement to retrieve the CUSTOMERS table as it was at SCN
663571
D. Execute another
FLASHBACK TABLE statement to retrieve the CUSTOMERS table as it was at SCN
663571
Answer: D
答案解析:
参考:闪回表:/article/1629013.html
可以再次使用闪回表返回之前的状态。
FLASHBACKTABLECUSTOMERS
TOSCN
663571;
FLASHBACKTABLE command to flash back the CUSTOMERS table. Before executing the
FLASHBACK
TABLE command, the system change number (SCN) was 663571. After flashing back the CUSTOMERS
table, you realize that the table is not in the correct state. Now, you need to reverse the effects of the
FLASHBACK
TABLE command. Which is the fastest and the most efficient option to reverse the effects of
the FLASHBACK TABLE command?
A. Restore the backup control file and open the database with RESETLOGS option.
B. Perform point-in-time recovery because flashback cannot be performed again on this table
C. Execute the FLASHBACK DATABASE statement to retrieve the CUSTOMERS table as it was at SCN
663571
D. Execute another
FLASHBACK TABLE statement to retrieve the CUSTOMERS table as it was at SCN
663571
Answer: D
答案解析:
参考:闪回表:/article/1629013.html
可以再次使用闪回表返回之前的状态。
FLASHBACKTABLECUSTOMERS
TOSCN
663571;
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