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Updated Exam 1z1-902 Dumps with New Questions
Certification Topics of Oracle 1Z0-902 Exam
Exadata Database Machine Security
Exadata Database Maintenance Tasks
Exadata Database Machine Updates
Exadata Database Machine Troubleshooting
Exadata Database Machine Installation
Exadata Database Machine Integration
Exadata Database Machine Monitoring
Exadata Database Machine Configuration and Administration
Exadata Database Machine Architecture and Key Capabilities
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NEW QUESTION 12
Which two Exadata security features would you configure to control which databases can access which griddisks, when multiple databases share space on your storage servers in an unpartitioned storage grid?
- A. File permissions on the griddisks in each storage server
- B. File permissions on the griddisks in each database server
- C. Exadata storage realms using ASM-scoped security mode
- D. Using EXADCLI instead of CELLCLI to create the griddisks
- E. Exadata storage realms using database-scoped security mode
Answer: A,D
NEW QUESTION 13
How is Exadata Secure RDMA Fabric isolation used in X9M-2 with virtualization enabled?
- A. With Secure Fabric isolation, each Database VM cluster uses a dedicated network partition and VLAN ID for cluster networking between the database servers in the VM Cluster. This provides security and isolation between multiple tenants or VM clusters.
- B. With Secure Fabric isolation, each Database VM Guest uses a dedicated network partition and VLAN ID for client networking between application servers. This improves security by preventing man in the middle attacks.
- C. With Secure Fabric isolation, each Storage Server runs multiple KVM guests each dedicated to a Database VM cluster using a dedicated network partition and VLAN ID. This provides security and isolation between multiple tenants or VM clusters.
- D. With Secure Fabric isolation, each Database VM Cluster uses a dedicated network partition and VLAN ID for Data Guard networking between the primary and disaster recovery Exadata racks. This improves security by isolating data guard traffic onto an encrypted network between data centers.
Answer: A
NEW QUESTION 14
What is the maximum DRAM capacity you can expand an X9M-2 DB Server?
- A. 512GB
- B. 384GB
- C. 1536GB
- D. 768GB
- E. 1024GB
- F. 2048GB
Answer: F
Explanation:
The Exadata X9M-2 Database Machine uses powerful database servers, each with two 32-core x86 processors and 512 GB of memory (expandable up to 2 TB).
NEW QUESTION 15
Which three statements are true about Oracle Configuration Manager (OCM) for an Exadata Database Machine?
- A. It collects configuration information on demand.
- B. It is mandatory to install OCM on at least one database server.
- C. It collects configuration information automatically.
- D. It is mandatory to install OCM on all database servers.
- E. Collected configuration information can be uploaded manually to Oracle.
- F. Collected configuration information can be uploaded automatically to Oracle.
Answer: B,D,F
NEW QUESTION 16
You are going to create an ACFS Filesystem for use as a staging area for data loads. Examine the following commands:
What steps and in which order should they be executed?
- A. 6, 1, 2, 7, 5, 8
- B. 6, 8, 3, 4, 2, 1
- C. 6, 3, 1, 9, 7, 8
- D. 6, 2, 1, 8, 4, 5
Answer: C
NEW QUESTION 17
Which two quarantine types can disable Smart Scan for multiple databases that offload SQL statements to a cell on an Exadata Database Machine?
- A. Database Quarantine
- B. Disk Region Quarantine
- C. Manually created Quarantine
- D. Cell Offload Quarantine
- E. SQL Plan Quarantine
Answer: A,C
NEW QUESTION 18
You have a script with several CELLCLI commands that must be executed on each cell in your Exadata full rack. The script must run on each cell simultaneously. How must you achieve this?
- A. Copy and execute the script on all storage servers using the EXACLI command.
- B. Copy the script to all storage servers using the dcli command and manually execute it on all storage servers using the EXACLI command.
- C. Copy and execute the script on all storage servers using the dcli command.
- D. Copy the script to all storage servers using the CELLCLI command and execute it on all storage servers in parallel using the CELLCLI command.
- E. Copy the script to all storage servers using the dcli command and manually execute it on each storage server using the DCLI command.
Answer: A
NEW QUESTION 19
You are providing oversight for the delivery of a new Exadata Database Machine.
1. Stabilize the Exadata Rack.
2. Unpack Oracle Exadata Rack.
3. Review the safety guidelines.
4. Let the Exadata acclimatize for 24 hours.
5. Power on Exadata PDU A.
6. Place Exadata in its allocated space.
7. Power on Exadata PDU B.
What is the correct order of these steps?
- A. 2,3,4,6,1,7,5
- B. 2,6,1,4,3,7,5
- C. 3,2,6,4,1,7,5
- D. 3,2,6,1,4,7,5
- E. 4,3,2,6,1,7,5
Answer: A
NEW QUESTION 20
A new Exadata Quarter Rack with 2 Database Servers and 3 HC Storage Servers and 3-phase 15kVA PDUs is being installed in a Data Center. However, the Data Center is only providing enough power for a single cable from each PDU.
Which statement is correct?
- A. The installation cannot proceed until two power feeds are available per PDU.
- B. A splitter cable can be used to provide power to all PDU cables.
- C. The installation can go ahead, no change is required.
- D. The power cables from the servers to the PDUs can be rearranged inside the rack following OECA guidance to utilize a single PDU power cable.
Answer: D
NEW QUESTION 21
Your system administrator reports an amber, non-blinking light on one of your Exadata storage disks. You immediately execute the 'list physicaldisk where diskType=HardDisk and status=failed DETAIL' command on the Exadata storage system and the specified disk is indeed reported as failed. Platinum Support has not been enabled for this system. Enterprise Manager Cloud Control is monitoring the system.
What is the next step that you should perform before you do anything else?
- A. Ask the system administrator to replace the broken disk with a spare.
- B. Call Oracle Support and make an appointment so that the drive can be replaced.
- C. Check the database to see if any rebalance operations are active.
- D. Wait for the email of the failure that Exadata or Enterprise Manager will send.
E Download and run the latest exadiag tool. - E. Wait for a blue light to appear on the disk if the rebalance operation is running.
Answer: A
NEW QUESTION 22
You have configured a multirack Database Machine with two X9M-8 full racks all in a single cluster and storage grid comprising a total of 4 X9M-8 Database servers and 28 X9M-8 Storage servers.
Which two options are true regarding the servers on which Enterprise Manager agents must be deployed in order to monitor all components of this multirack configuration?
- A. on all database servers in the second rack
- B. on all database servers in the first rack
- C. on only one database server in both racks
- D. on all database servers and at least two storage servers in both racks
- E. on all database servers in both racks and one storage server in each rack
- F. on at least two storage servers in both racks
- G. on all storage servers in both racks
Answer: B,G
NEW QUESTION 23
Examine these commands:
1. Execute "crscti stop cluster -all" as the grid user from one database server.
2. Execute "crscti stop cluster -all" as root from one database server.
3. Power off all network switches.
4. Execute "crscti stop cluster" as root from one database server.
5. Execute "crscti stop cluster" as the grid user from one database server.
6. Power off the rack using the power switches on the PDUs.
7. Execute "shutdown -h now" on all database servers.
8. Execute "shutdown -h now" on all Exadata storage servers.
Which is the correct order or the required commands to completely power off an Exadata Database Machine in an orderly fashion?
- A. 5, 8, 7, and 6
- B. 2, 8, 7, 3, and 6
- C. 4, 7, 8, 3, and 6
- D. 1, 8, 7, 3 and 6
- E. 2, 7, 8, and 6
Answer: E
NEW QUESTION 24
Which two statements are correct about adding an additional database server to a physical Exadata X9M Database Machine using Oracle Exadata Deployment Assistant (OEDA)?
- A. The applyElasticConfig.sh script performs network configuration for the new servers. The new servers are restarted at the end of the process.
- B. Executing /opt/oracle.supportTools/reclaimdisks.sh -free -reclaim on each Exadata X9M Database server is required to reclaim disk space and perform partition reconfiguration.
- C. It is required to install OEDA on the first new database server.
- D. Do not proceed if the OEDA Validate Configuration File step displays an error message about missing files p6880880.zip.
- E. In order to configure the servers with Oracle Exadata Deployment Assistant (OEDA), the new server information must be entered in OEDA, and the configuration file must contain existing nodes.
Answer: A,D
NEW QUESTION 25
Which two options can be used to identify a damaged or failing flash card on an X9M-2 Database Machine High Capacity storage server?
- A. hardware monitoring using the storage server ILOM
- B. using the CELLCLI list LUN DETAIL command as the celladmin user
- C. using the CELLCLI CALIBRATE command on the storage server after logging in as the celladmin user
- D. using the CELLCLI CALIBRATE command on the storage server after logging in as the root user
Answer: B,C
NEW QUESTION 26
You use Enterprise Manager to monitor all the components of your Exadata Database Machine.
Recently, you discovered that certain asmdisks were offline in one of the diskgroups used by the rac database called prod.
In which two sources would you find diagnostic messages related to this problem?
- A. alert logs for Enterprise Manager
- B. Enterprise Manager Alerts on the ILOM home page for cell connectivity problems for the prod database instances
- C. Enterprise Manager Alerts on the Exadata Storage Server Grid home page
- D. alert logs for the ASM instances
- E. alert logs for the prod database instances
Answer: B,C
NEW QUESTION 27
Which statement is true about the patching features provided in Platinum Services?
- A. Patching is done automatically during business hours.
- B. The rolling and complete down time approaches are two options to patching.
- C. Oracle Platinum Service covers Exadata storage software and firmware patching, but customers must perform the database patching.
- D. Patching services are available for the full software stack up to twice per year.
Answer: C
NEW QUESTION 28
Which two statements are true about applying updates on Exadata systems?
- A. Updating kernel and RDMA packages on storage cells should be prevented by excluding them with the yum -exclude option.
- B. Failed storage server updates are automatically rolled back to a previous release.
- C. For regular Exadata updates, yum automatically installs a non-UEK kernel, which can be selected to boot from grub.
- D. To speed up applying storage server updates in a rolling manner, updating two storage servers simultaneously is recommended.
- E. When running a "yum update" for a new Exadata release, all other repositories should be disabled.
- F. Failed database server updates are rolled back to a working state on a previous release automatically.
Answer: C,F
NEW QUESTION 29
You are in the process of upgrading your nonvirtualized X9M-2 Database Machine elastic configuration with 4 database servers and 7 HC storage servers with an additional 4 database servers and 7 HC storage servers.
The new storage servers are called DM01CEL08 through dmoicel14.
After creating 96 new griddisks, you issued this SQL statement:
How many failgroups if any, will be added to the DATE diskgroup by executing this SQL statement?
- A. 1 consisting of all 96 griddisks
- B. 12 consisting of seven griddisks each
- C. 0 because the new griddisks will be added to the existing faiigroups
- D. 96 consisting of one griddisk each
- E. 7 consisting of 12 griddisks each
Answer: B
NEW QUESTION 30
Which three statements are true about the CELLCLI command?
- A. It can be executed on storage servers.
- B. It can be executed using the DCLI utility.
- C. It has command-line history.
- D. It requires root privileges to create CELLDISKS and GRIDDISKS.
- E. It can execute commands on multiple storage servers in parallel.
Answer: A,B,C
Explanation:
The CellCLI utility supports command-line history.
Each Exadata Storage cell can be monitored, configured, and maintained using the cellcli command line interface.
The dcli utility facilitates centralized management across an Oracle Exadata Storage Server Software realm by automating the execution of CellCLI commands on a set of cells and returning the output to the centralized management location where the dcli utility was run.
References: http://docs.oracle.com/cd/E80920_01/SAGUG/exadata-storage-server-cellcli.htm
NEW QUESTION 31
Which two sections of the AWR report shows statistics for X9M Persistent Memory Cache?
- A. PMEM Pool cache Read Hits in the Cache Sizes portion of the Report Summary
- B. PMEM Cache section within Exadata Smart Statistics
- C. PMEM Pool Misses in the Exadata Outlier Summary
- D. PMEM Cache section within Memory Statistics
- E. cell PMEM cache Read Hits in the Database IOs portion of the Performance Summary
Answer: D
NEW QUESTION 32
You have been notified by your Network Administrator that an upstream switch has been replaced due to a hardware fault. Which command verifies that the client network on your Exadata X9M-2 Database Server is available via both client switches?
- A. cat /proc/net/bonding/bondeth0
- B. /opt/oracle.SupportTools/ibdiagtools/checkbadlinks.p1 -all
- C. ifconfig -a legrep "re0| re1"
- D. netstat -rn
Answer: B
NEW QUESTION 33
Which statement is true about the Persistent Memory Commit Accelerator?
- A. Persistent Memory Commit Accelerator helps to further reduce redo log write latency by using Persistent Memory and Remote Direct Memory Access (RDMA).
- B. Persistent Memory Commit Accelerator tracks changes to Persistent Memory Data Accelerator to ensure duplicate blocks are not written to Flash.
- C. Persistent Memory Commit Accelerator contains logging information from all tiers of the software stack for rapid triage and diagnostics.
- D. Persistent Memory Commit Accelerator reduces redo log write latency by using Persistent Memory and RDMA before flushing to Flash then disk.
- E. Persistent Memory Commit Accelerator copies redo log data from disk for faster redo apply on Data Guard Standby Databases.
Answer: A
NEW QUESTION 34
You are planning the monitoring configuration for your Exadata X9M Database Machine.
Which three components are monitored directly through the use of Exadata-specific Enterprise Manager Plug-Ins?
- A. Hybrid Columnar Compression (HCC) ratios on Extended (XT) storage servers
- B. the storage server ILOM
- C. the RDMA over Converged Ethernet (RoCE) switches
- D. ASM instances
- E. the Power Distribution Units (PDUs)
- F. Oracle clusterware on the database server
Answer: B,D,F
NEW QUESTION 35
Which two statements are true about enabling write-back flash cache?
- A. When enabling write-back flash cache in a non-rolling manner, you need to drop the Persistent Memory Commit Accelerator (PMEMLog) first.
- B. When enabling write-back flash cache in a rolling manner, DBCLI should be used to inactivate the grid disks on all cells first.
- C. Before write-back flash cache is enabled, you need to drop the Flash Cache first.
- D. Write-back Flash Cache cannot be used on Extreme Flash Storage Servers.
- E. Write-back flash cache is on by default for High Capacity Storage Servers in High Redundancy configurations.
Answer: A,C
NEW QUESTION 36
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