1z1-070 試験問題を無料オンラインアクセス

Which three statements are true about Recovery Manager (RMAN) daily differential incremental backup strategies on an X5 Database Machine for a database having 25% or more of its blocks modified each day and which has an 8 k block size?

• A.For level-1 backups, Block Change Tracking (BCT) is most beneficial when more than 25 percent of the blocks have changed since the last backup.
• B.Fast incremental backups when 50% or more of the blocks have changed since the last backup, will run as slowly as normal incremental backup.
• C.For level-0 backups, Block Change Tracking (BCT) is most beneficial when more than 25 percent of the blocks have changed since the last backup.
• D.Enabling Block Change Tracking (BCT) on the database can result in reduced consumption of storage network bandwidth.
• E.cellsrv returns only blocks that have changed since the last backup.
• F.Enabling Block Change Tracking (BCT) on the database can result in a reduction of physical I/O on the cells during incremental backups.

You plan to migrate a very large database supporting a DSS workload to your new X5 Database Machine.
It will be the only database on this full rack.
Which three statements are true about Database Machine features that improve performance for the DSS workload?

• A.Full table scan operations can improve due to the default Smart Flash Cache implementation.
• B.Smart Storage operations can improve the performance of scans.
• C.Hybrid Columnar Compression can reduce the amount of physical I/O required to scan large tables.
• D.Smart Storage operations can improve the performance of joins.
• E.Hybrid Columnar Decompression overheads can be offloaded from the database servers for index full scans.

You must replace the battery on the disk controller in three Exadata storage servers and must power off the affected storage servers.
Which two commands must you execute to safely power off the storage servers in an X5 Database Machine?

• A.'shutdown -h now' on the affected storage servers
• B.'crsctl stop cluster -all' on one of the database servers
• C.CellCLI > LIST GRIDDISK ATTRIBUTES name WHERE asmdeactivationoutcome != 'Yes'
• D.CellCLI> ALTER GRIDDISK ALL INACTIVE
• E.CellCLI> LIST GRIDDISK WHERE STATUS != 'inactive'

Which three statements are true regarding the configuration of Auto Service Request (ASR) on an X5 Database Machine?

• A.Oracle Solaris must be used on the server where ASR Manager is installed.
• B.HTTPS connectivity must be enabled from the ASR Manager host to the Internet.
• C.ASR Manager must be installed on one of the database servers.
• D.ASR Manager may be installed on any type of server running Oracle Solaris.
• E.ASR Manager may be installed on any type of server running Oracle Linux.
• F.SMTP must be enabled on at least one database server.
• G.Oracle Linux must be used on the server where ASR Manager is installed.

You applied patches to both the storage servers and the database servers in your Exadata X6 Database Machine.
You use Database Replay for a 90-minute workload to verify that there are no performance regressions after applying the patches.
Which three options could you use to immediately measure the performance and to check for possible regressions caused by changes in the storage server software?

• A.cellcli list metriccurrent
• B.SQL trace using dbms_monitor
• C.cellcli list alerthistory
• D.SQL Access Advisor
• E.cellcli list metrichistory