Given: What is the result?() Compilation fails because of an error in line 7.。 Compilation fails because of an error in line 9.。 If you define D e = new E(), then e.bMethod() invokes the version of bMethod() defined in Line 5.。 If you define D e = (D)(new E()), then e.bMethod() invokes the version of bMethod() defined in Line 5.。 If you define D e = (D)(new E()), then e.bMethod() invokes the version of bMethod() defined in Line 9.。
管理过程由哪些环节构成() 计划。 实行。 检查。 总结。
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You executed the following PL/SQL block successfully: VARIABLE tname VARCHAR2(20) BEGIN dbms_addm.insert_finding_directive (NULL, DIR_NAME=>’Detail CPU Usage’, FINDING_NAME=>’CPU Usage’, MIN_ACTIVE_SESSIONS=>0, MIN_PERC_IMPACT=>90); :tname := ’database ADDM task4’; dbms_addm.analyze_db(:tname, 150, 162); END; / Then you executed the following command: SQL> SELECT dbms_addm.get_report(:tname) FROM DUAL; The above command produces Automatic Database Diagnostic Monitor (ADDM) analysis() with the CPU Usage finding if it is less than 90。 without the CPU Usage finding if it is less than 90。 with the CPU Usage finding for snapshots below 90。 with the CPU Usage finding for snapshots not between 150 and 162。
直流电动机处于制动运行状态时,其电磁转矩与()。 转速方向相反,电动机吸收机械能变成电能。 转速方向相同,电动机吸收机械能变成电能。 转速方向相反,电动机将电能变成机械能。 转速方向相同,电动机将电能变成机械能。
On Friday at 11:30 am you decided to flash back the database because of a user error that occurred at 8:30am.
Which option must you use to check whether a flashback operation can recover the database to the specified time?()