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单选题
At 5：30 PM， a database administrator， William， is informed that an important record of employee no E0025 is missing from the SCOTT.EMPLOYEE table. At 4：30 P.M， the table contained the record of employee no E0025. William issues the following command to find the SQL statements that are used to undo the deletion： SELECT operation， undo_sql， logon_user FROM FLASHBACK_TRANSACTION_QUERY WHERE xid= HEXTORAW（’0100043E23456’）； where ’0100043E23456’ is the transaction ID of the transaction that deleted the row. Before issuing the above statement， which task did William perform to identify the transaction ID of the transaction that deleted the row？（）
A
William used the Flashback Version Query feature.
B
William issued the CROSSCHECK command at the RMAN prompt.
C
William viewed the alert log file.
D
William used the Flashback Table feature.
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更多 “单选题At 5：30 PM， a database administrator， William， is informed that an important record of employee no E0025 is missing from the SCOTT.EMPLOYEE table. At 4：30 P.M， the table contained the record of employee no E0025. William issues the following command to find the SQL statements that are used to undo the deletion： SELECT operation， undo_sql， logon_user FROM FLASHBACK_TRANSACTION_QUERY WHERE xid= HEXTORAW（’0100043E23456’）； where ’0100043E23456’ is the transaction ID of the transaction that deleted the row. Before issuing the above statement， which task did William perform to identify the transaction ID of the transaction that deleted the row？（）A William used the Flashback Version Query feature.B William issued the CROSSCHECK command at the RMAN prompt.C William viewed the alert log file.D William used the Flashback Table feature.” 相关考题
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单选题The customers will be informed if ______.A
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The sp_executesql batches are not being recovered from the procedure cache.B
A database administrator executed UPDATE STATISTICS statements on all tables， and the most common stored procedures reference all the tables.C
One new stored procedure is created by a database administrator.D
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考题
单选题You work as a database administrator for Certkiller .com. Your database is in NOARCHIVELOG mode and you want to perform a backup. Which type of backup would be appropriate in this case？ （）A
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考题
单选题At 5：30 PM， a database administrator， William， is informed that an important record of employee no E0025 is missing from the SCOTT.EMPLOYEE table. At 4：30 P.M， the table contained the record of employee no E0025. William issues the following command to find the SQL statements that are used to undo the deletion： SELECT operation， undo_sql， logon_user FROM FLASHBACK_TRANSACTION_QUERY WHERE xid= HEXTORAW（’0100043E23456’）； where ’0100043E23456’ is the transaction ID of the transaction that deleted the row. Before issuing the above statement， which task did William perform to identify the transaction ID of the transaction that deleted the row？（）A
William used the Flashback Version Query feature.B
William issued the CROSSCHECK command at the RMAN prompt.C
William viewed the alert log file.D
William used the Flashback Table feature.
考题
多选题Your database instance is functional for the past one month. The Automatic Workload Repository（AWR） snapshot retention is set to 7 and the STATISTICS_LEVEL initialization parameter is set to TYPICAL. You receive a complaint about the poor performance of the database between 7 PM and 9 PM of theprevious day. Choose two actions any of which can be referred to first to diagnose the problem. （）AUse the Active Session History report.BUse the AWR Compare Periods report.CUse an ADDM analysis between 7 PM and 9 PM of the previous day.DUse the AWR Compare Period report between 7 PM and 9 PM of the previous day.
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