Your database performance has degraded due to frequent checkpointing. What would you do in this scenario？（）

单项选择题Youwantthesizeofthetablespacetoincreasewhenitisfull.Whichoptionwouldyouuse？（）

A.use automatic extent allocation
B.disable threshold for the tablespace
C.use freelists to manage the free space
D.use automatic segment space management
E.create the tablespace as a bigfile tablespace
F.use the RESIZE clause while creating the tablespace
G.enable AUTOEXTEND for at least one of the data files in the tablespace

单项选择题YourdatabaseisinNOARCHIVELOGmodeandalogswitchhappensevery20minutes.OnThursdaymorning，mediafailureresultedincorruptionofadatafilebelongingtotheTOOLStablespace.BackupsaretakenoneverySunday.Whatwouldyoudointhissituation？（）

A.recover using Oracle Flashback Database technology
B.restore the data files from backup and perform a complete recovery
C.restore only the corrupted data file and perform tablespace recovery
D.restore the data files from backup and perform cancel-based recovery
E.restore the entire database from the most recent backup and start the instance and open the database

多项选择题YourdatabaseisrunninginNOARCHIVELOGmode.YouwanttoputthedatabaseinARCHIVELOGmode.Whichtwostatementsregardingarchivelogdestinationsaretrue？（）

A.The destination must be global only.
B.A maximum of five destinations can be assigned.
C.A maximum of ten different destinations can be assigned.
D.All the destinations are determined by the server automatically.
E.The destination may be local or remote for a Standby Database.
F.The destination can be changed by setting the LOG_ARCHIVE_FORMAT initialization parameter.

多项选择题Youstartedalongtransaction.Beforecommitting，youexecutedaqueryononeofthetablescurrentlybeingmodified.Youreceivedthefollowingerror：ORA-01555：snapshottoooldHowwouldyoupreventsuchanerrorinthefuture？（）

A.guarantee undo retention
B.add one more redo log group
C.size the redo log files appropriately
D.size the UNDO tablespace appropriately
E.size the SYSTEM tablespace appropriately
F.configure an appropriate undo retention interval
G.change automatic undo management to manual

单项选择题Youspecifiedextentmanagementaslocalforatablespace.Howwillitaffectspacemanagementinthetablespace？（）

A.All the extents will be of the same size.
B.Bitmap will be used to record free and allocated extents.
C.Free extents will be managed by the data dictionary tables.
D.The tablespace will be system managed and the users cannot specify the extent size.