单项选择题
As a result of performance analysis， you created an index on the prod_name column of the prod_det table， which contains about ten thousand rows. Later， you updated a product name in the table. How does this change affect the index？（）
A.A leaf will be marked as invalid.
B.An update in a leaf row takes place.
C.The index will be updated automatically at commit.
D.A leaf row in the index will be deleted and inserted.
E.The index becomes invalid when you make any updates.
相关考题
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多项选择题
WhichtwostatementsaboutFlashbackQueryaretrue？（）
A.It is generated by using the redo log files.
B.It helps in row-level recovery from user errors.
C.It can be performed to recover ALTER TABLE statements
D.It fails when undo data pertaining to the transaction is overwritten.
E.The database has to be opened with the resetlogs option after performing Flashback Query. -
单项选择题
WhilesettingupanOracledatabaseforoneofyourcriticalapplications，youwanttoensurethatthedatabaseisbackedupatregularintervalswithoutyourintervention.Whatshouldyoudotoachievetheobjective？（）
A.configure the database to run in ARCHIVELOG mode
B.configure the Flash Recovery Area to enable automatic database backup
C.schedule the database backup using DBMS_JOB package after creating the database
D.schedule the database backup using Recovery Manager （RMAN）commands after creating the database
E.schedule the database backup using Database Configuration Assistant （DBCA）while creating the database -
单项选择题
AusercomplainsthathegetsthefollowingerrormessagerepeatedlyafterexecutingsomeSQLstatements.Theerrormessageforcestheusertologofffromandlogontothedatabasetocontinuehiswork.ORA-02392：exceededsessionlimitonCPUusage，youarebeingloggedoffWhichactionwouldyoutaketoincreasethesessionlimitonCPUusage？（）
A.Modify the profile assigned to the user.
B.Modify the roles assigned to the users.
C.Modify the object privileges assigned to the user.
D.Modify the system privileges assigned to the users.
E.Modify the value for the RESOURCE_LIMIT parameter in the parameter file.
