Identify four significant changes when a backup of Exadata compute nodes must be performed.
A. application of operating system patches
B. before shutdown to preserve storage indexes
C. application of Oracle patches
D. reconfiguration of significant operating system parameters
E. installation or reconfiguration of significant non-Oracle software
F. storage server rebalancing
G. addition of an Exadata storage expansion rack
Which table compression technique will not work on Exadata without licensing the Oracle Advanced Compression Option?
A. COMPRESS
B. COMPRESS BASIC
C. COMPRESS FOR OLTP
D. COMPRESS FOR QUERY
E. COMPRESS FOR ARCHIVE
100% Real QandAs | 100% Real Pass
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. Review the IOSTAT data that is gathered from each compute node by OS Watcher.
D. Evaluate the Smart Flash Logging efficiency metrics via CellCLI.
E. Check I/O latency on large I/O to Temp in AWR.
100% Real QandAs | 100% Real Pass
Which statement is true about the patching features provided in Platinum Services?
A. Patching services are available for the full software stack up to twice per year.
B. Patching support includes Exadata, Exalogic, and Database Appliance.
C. Rolling window and complete down time approaches are two options to patching.
D. Platinum covers Exadata storage software and firmware patching, but the customer must perform database patching.
Storage indexes are unique to the Exadata Database Machine and their primary goal is to reduce the amount of I/O required to service I/O requests for Exadata Smart Scan. Put the following steps in order:
1.
The Exadata cell services software conducts I/O requests on I MO storage regions.
2.
cellsrv checks the high and low values, and determines the storage region does not contain any values meeting the predicate.
3.
The database is started.
4.
Physical I/O to the region is bypassed if the query selection falls outside the high/low storage index storage.
5.
A query is issued against the MYOBJ_CTRL table that has a predicate OBJECT_ID=1500.
6.
A subsequent query is Issued against the MYOBJ_CTRL table that has a predicate OBJECT_ID=2234.
7.
MYOBJ_STATE'S region index is populated with high and low values for the OBJECT_ID column during the I/O request.
A. 3. 7, 5, 2, 1, 6, and 4
B. 3, 7, 1, 5, 6, 2, and 4
C. 3, 6, 1. 7, 2, 5 and 4
D. 3, 5, 1, 7, 6, 2. and 4
You are asked to enable Write Back Flash Cache for one of your customers X3-2 Full Rack in a rolling fashion. Put the following steps in the right order:
A. Set flashCacheMode to writeback.
B. Inactivate all grid disks and shut down cellsrv.
C. Drop the Flash Cache.
D. Verify that cell for flashcacheMode is writeback.
E. Create the Flash Cache.
F. Start up cellsrv and activate all grid disks.
G. Check grdidksk asmdeactivationoutcome and asmmodestatus for all grid disks to ensure that all grid disks on all cells are set to Yes and online, respectively.
A. G. B, C, A, F, E, D, and G
B. G, A, B, C, F, E, D, and G
C. G, C, B, A, F, E, D, and G
D. G, E, C, B, F, A, D, and G
Which Exadata feature uses Flash as a parallel write cache to Disk Controller Cache?
A. Exadata DRAM
B. InfiniBand network cache C. high performance SAS disks
D. Smart Flash Log
E. Hybrid Columnar Compression
The Exadata compute node, exadbs04, has been having issues for some time. The server had to be repaired and you just received a new server. Your LVM snapshot was corrupt and now the compute node must be re-image with an Oracle Support installation image. Which three tasks would you need to perform to re-image the compute node?
A. Mount the LVM backup image across the network and recover the system.
B. Remove exadbs04 from the RAC cluster and all associated Oracle Homes from the central inventory.
C. Create a CELLBOOT USB Flash Drive using an external USB drive.
D. Reboot the new server using a bootable recovery image from the external USB drive.
E. Reconfigure all site-specific settings (host name, IP addresses, NTP server, and so on).
Which is a best practice for High Availability (HA) in an Exadata environment?
100% Real QandAs | 100% Real Pass
A. Checksums performed on the Exadata Storage Server ensure logical consistency of block content.
B. When a standby database is in place, DB_BLOCK_CHECKING is not required and thus not recommended.
C. Oracle Exadata Storage Server Software HARD checks operate transparently after enabling DB_BLOCK_CHECKSUM on a database.
D. Due to the different architecture that Exadata has with storage servers, compared to regular Storage Area Network, DB_LOST_WRITE_PROTECT need not be set.
E. Stretched RAC is the best alternative for Exadata that combines both HA and DR into one.
Identify the correct steps required to upgrade a 1/8th rack of Exadata to a 1/4th rack.
A. Remove the doors of the 1/8th rack. Add the new servers. Cable the Database Servers in the rack. Cable the Exadata Storage Servers in the rack. Close the rack.
B. Activate all cores by using a software command. Activate all hard drives and flash drives. Create the grid disks. Expand the Oracle ASM diskgroups. Review the new configuration.
C. Remove the doors of the 1/8th rack. Add an additional Sun Datacenter InfiniBand Switch. Add the new servers. Cable the Database Servers in the rack. Cable the Exadata Storage Servers in the rack. Close the rack. Configure the new hardware.
D. Activate all cores by using a software command. Activate all hard drives and flash drives.
Nowadays, the certification exams become more and more important and required by more and more enterprises when applying for a job. But how to prepare for the exam effectively? How to prepare for the exam in a short time with less efforts? How to get a ideal result and how to find the most reliable resources? Here on Vcedump.com, you will find all the answers. Vcedump.com provide not only Oracle exam questions, answers and explanations but also complete assistance on your exam preparation and certification application. If you are confused on your 1Z0-485 exam preparations and Oracle certification application, do not hesitate to visit our Vcedump.com to find your solutions here.