1z0-485 試験問題を無料オンラインアクセス

After migrating from legacy disk-based configuration, which three approaches would you use to evaluate the efficiency of Exadata Flash Cache?

• A.Review the Flash Hit rate via cellcli metrics.
• B.Compare Optimized Physical Reads and Total Read Requests in Automatic Workload Repository (AWR).
• C.Check I/O latency on large I/O to Temp in AWR.
• D.Review the IOSTAT data that is gathered from each compute node by OS Watcher.
• E.Evaluate the Smart Flash Logging efficiency metrics via CellCLI.

When an Exadata Storage Server hard disk failure alert is received, what manual action must you take to restore the system to full redundancy?

• A.No manual action is required because ASM rebalancing isautomatic.
• B.No manual action is required because Automatic Storage Management (ASM) fast mirror resync is automatic
• C.Run RMAN REPAIR FAILUR
• D.Replace the disk and manually copy the mirror extents to the new drive.
• E.Replace the disk and run MegaCLI to rebuild the degenerate mirror.

What are three ways to be informed of an Exadata Storage Server disk failure?

• A.review of the output of list alerthistory
• B.alert notifications through email when SMTP notification is configured
• C.review of database server iostat output
• D.review of the output of select status from vSdatafile
• E.review of the ILOM log
• F.alert notifications in the Enterprise Manager Exadata Plug-In

Which statement is true about Oracle compression?

• A.A non-partitioned table can use Advanced Compression and Hybrid Columnar Compression concurrently.
• B.A partitioned table can define the use of Advanced Compression or HybridColumnar Compression for each partition.
• C.Hybrid Columnar Compression can be defined for a single column.
• D.A partitioned table can use only Advanced Compression or only Hybrid Columnar Compression.

You are concerned about how recovery from a failed Exadata Storage Server would work. Which statement is true about the Exadata CELLBOOT USB?

• A.Regular Exadata Storage Server patches make sure that the internal USB is updated so that it can be used for recovery.
• B.Each patch that is performed on Exadata storage servers requires manual resync of the CELLBOOT USB.
• C.Exadata automatically copies OS binaries and configuration files from another cell during patching to sync the internal USB.
• D.Changes to network configuration files are possible without usingipconf.plas long as all relevant files are updated.
• E.Some space from the CELLBOOT USB is used for cache metadata when write back flash cache is enabled.