某计算机的字长为32位,其存储容量为4 MB,若按半字节编址,它的寻址范围是()。
A.0~4 M
B.0~2 M
C.0~8 M
D.0~1 M
第1题
A.sb1.append("abc");s1.append("abc");
B.sb1.append("abc");s1.concat("abc");
C.sb1.concat("abc");s1.append("abc");
D.sb1.concat("abc");s1.concat("abc");
E.sb1.append("abc");s1=s1.concat("abc");
第2题
A.Youcannotcreateglobalrangepartitionedindexesonthetable.
B.Theoptimizerwillnotexecutepartitionwisejoinsonthetable’spartitions.
C.Youmustincludeatleastoneelementinthevaluelistofeachpartitionofthetable,evenifthatelementisthekeywordNULL.
D.Partitionpruningwillnotoccurduringqueryoptimizerifarangeofvaluesisincludedinthequerypredicate.
第3题
A.Rebuildtheindexusingtheonlineoption.
B.Taketheindividualdatafileoffline(notthewholetablespace),restoreandrecoverthedatafilefrombackupwithRMAN,thensetthedatafileonlineagain.
C.Withoutsettingtheindividualdatafileoffline,useRMANwithBlockMediaRecoverytorestoreandrecoveronlythoseblocks.
D.Taketheindividualdatafile(notthewholetablespace)offline,useRMANwithBlockMediaRecoverytorestoreandrecoveronlythoseblocks,thensetthedatafileonlineagain.
第4题
A.0
B.1
C.3
D.4
第5题
A.SYSDBA
B.SYSOPER
C.NosystemprivilegesarerequiredfortheRMANuser.
D.OnlySYSusercanconnectandexecuteRMANcommandsonatargetdatabase.
第6题
A.Closinganopenstream.
B.Flushinganopenstream.
C.Writingtoanopenstream.
D.Writingalineseparatortoanopenstream.
第7题
A.RECOVERY_PARALLELISM
B.FAST_START_MTTR_TARGET
C.LOG_CHECKPOINT_INTERVAL
D.FAST_START_PARALLEL_ROLLBACK
第8题
A.CREATE TABLE EMP (empno NUMBER(4), ename VARCHAR2(35), deptno NUMBER(7,2) NOT NULL, CONSTRAINT emp_deptno_fk FOREIGN KEY deptno REFERENCES dept deptno);
B.CREATE TABLE EMP (empno NUMBER(4), ename VARCHAR2(35), deptno NUMBER(7,2) CONSTRAINT emp_deptno_fk REFERENCES dept (deptno));
C.CREATE TABLE EMP (empno NUMBER(4), ename VARCHAR2(35), deptno NUMBER(7,2) NOT NULL, CONSTRAINT emp_deptno_fk REFERENCES dept (deptno) FOREIGN KEY (deptno));
D.CREATE TABLE EMP (empno NUMBER(4), ename VARCHAR2(35), deptno NUMBER(7,2) FOREIGN KEY CONSTRAINT emp_deptno_fk REFERENCES dept (deptno));
第9题
A.ThePMONprocessregisterstherequestintheresponsequeue.
B.Asharedseverplacestheprocessrequestintheresponsequeue.
C.Arequestwithintherequestqueueisprocessedbyanidlesharedserverprocess.
D.Adispatcherassignsarequestfromtherequestqueuetoandidlesharedserverprocess.
第10题
A.PolicyviolationsareprioritizedasHigh,Medium,orInformationalbycategory
B.Policiescanbedisabledcompletely,orflaggedasignored,forthespecifiedtarget
C.Policiescanbeflaggedasignored,butnevercompletelydisabled,forthespecifiedtarget
D.Policyviolationsmustbecorrected,otherwisethedatabasewillshutdownuntilcorrectiveactionoccurs
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