A.substitution variables
B.replacement variables
C.prompt variables
D.instead-of variables
E.This feature cannot be implemented through iSQL*Plus.
第1题
A.Thecontrolfilecangrowinsize.
B.ThecontrolfilecanstoreRMANscripts.
C.CONTROL_FILE_RECORD_KEEP_TIMEdeterminesretentiontimeforRMANrecords.
D.TheRMANcatalogcanexistsolelyinthecontrolfileofthetargetdatabase.
第2题
YoudiscoverthatadiskfailureoccurredonDISK3wherethedatafilebelongingtotheUSER_DATAtablespaceisstored.Thedatabaseiscurrentlyopenandyouneedtorecoverthedatafile.YouwillrestorethedatafiletoDISK2.WhatisthecorrectsequenceRMANcommandstorestoreandrecoverthedatafile?()
A.A
B.B
C.C
D.D
第3题
The EMP table contains these columns:EMPLOYEE_ID NUMBER(4)EMPNAME VARCHAR2 (25)SALARY NUMBER(9,2)HIRE_DATE DATEYou query the database with this SQL statement:SELECT empname,hire_date HIREDATE, salaryFROM EMPORDER BY hire_date;How will the results be sorted?()
A.randomly
B.ascending by date
C.descending by date
D.ascending alphabetically
E.descending alphabetically
第4题
A.A
B.B
C.C
D.D
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