[Q25-Q41] Get 100% Passing Success With True 1z1-902 Exam! [Apr-2024]

Get 100% Passing Success With True 1z1-902 Exam! [Apr-2024]

Oracle 1z1-902 PDF Questions - Exceptional Practice To Oracle Exadata Database Machine X8M Implementation Essentials

Oracle 1Z0-902 certification exam is designed to test the skills and knowledge of professionals who are responsible for the implementation and administration of the Oracle Exadata Database Machine X8M. Oracle Exadata Database Machine X8M Implementation Essentials certification exam is intended for professionals who are seeking to validate their expertise in designing, implementing, and managing Oracle Exadata Database Machine X8M solutions. 1z1-902 exam covers a range of topics including Exadata hardware components, software features, security, backup and recovery, and performance tuning.

NEW QUESTION # 25
Which are two correct statements for managing virtual deployment using Oracle Exadata Deployment Assistant (OEDA)?

A. OEDA deployment steps include calibrate cells, create cell disks, and resecure machine.
B. OEDA allows customers to have both bare metal (BM) and virtual machine (VM) in an Exadata X9M Quarter Rack.
C. OEDA sets up key-based authentication for the root user by using the setuprootssh.sh utility included with OEDA.
D. There is no limit on the number of VMs in an Exadata rack as long as the Exadata rack has adequate resources.

Answer: A,B

NEW QUESTION # 26
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 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.
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 cluster networking between the database servers in the VM Cluster. This provides security and isolation between multiple tenants or VM clusters.

Answer: D

NEW QUESTION # 27
Which two activities are supported on the storage servers in an Exadata Database Machine?

A. configuring secure shell user equivalency for the cellmonitor user
B. upgrading a device driver for hard disks when inserting a replacement disk after a hard disk failure
C. changing the root password
D. installing an alternative package manager
E. upgrading the Storage Server software package using rpm

Answer: B,E

Explanation:
Exadata Database Machine is a preconfigured and optimized for database workloads. The storage servers in an Exadata Database Machine are used to store database data, and support activities such as upgrading a device driver for hard disks when inserting a replacement disk after a hard disk failure and upgrading the Storage Server software package using rpm. These activities are related to maintain the storage servers performance and security. Changing the root password, installing an alternative package manager, and configuring secure shell user equivalency for the cellmonitor user are activities that can be performed on any Linux machine, but they are not specific to Exadata Database Machine.

NEW QUESTION # 28
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. Do not proceed if the OEDA Validate Configuration File step displays an error message about missing files p6880880.zip.
C. Executing /opt/oracle.supportTools/reclaimdisks.sh -free -reclaim on each Exadata X9M Database server is required to reclaim disk space and perform partition reconfiguration.
D. It is required to install OEDA on the first new database server.
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,E

Explanation:
https://docs.oracle.com/en/database/oracle/oracle-database/21/ladbi/db-on-exadata.html

NEW QUESTION # 29
Which three of the following options are available for database consolidation on Exadata?

A. A single database with one or more schema per application
B. Bare Metal deployment with one database per database server
C. Multiple Virtual Machine clusters supporting a single database for greatest resource isolation
D. Multiple pluggable databases in one or more container databases on a Virtual Machine or Bare Metal cluster
E. Multiple Databases on a cluster
F. Multiple databases spanning a Bare Metal and Virtual Machine cluster to provide resource isolation and consolidation concurrently

Answer: A,D,E

Explanation:
According to Oracle.com documents or resources, the three options that are available for database consolidation on Exadata are:
A) Multiple pluggable databases in one or more container databases on a Virtual Machine or Bare Metal cluster123.
C) A single database with one or more schema per application12.
E) Multiple Databases on a cluster12.
https://blogs.oracle.com/exadata/post/database-consolidation-why-and-how

NEW QUESTION # 30
Which two sections of the AWR report shows statistics for X9M Persistent Memory Cache?

A. PMEM Pool Misses in the Exadata Outlier Summary
B. PMEM Pool cache Read Hits in the Cache Sizes portion of the Report Summary
C. cell PMEM cache Read Hits in the Database IOs portion of the Performance Summary
D. PMEM Cache section within Exadata Smart Statistics
E. PMEM Cache section within Memory Statistics

Answer: D,E

Explanation:
The AWR report has two sections that show statistics for X9M Persistent Memory Cache: the PMEM Cache section within Memory Statistics and the PMEM Cache section within Exadata Smart Statistics. Both of these sections provide detailed information about the read and write hits and misses, as well as the total capacity and utilization of the PMEM cache. (Source: Oracle Exadata Database Machine X9M Implementation Essentials, page 515)

NEW QUESTION # 31
How do ASM failure groups provide redundancy?

A. They ensure that the ASM Flex instances are enabled on a maximum of two database servers or VMs per cluster.
B. Extended Redundancy mirrors data across data centers providing the highest levels of data protection.
C. Failure groups are created for each grid disk to ensure mirror copies are written to the same storage server for faster recovery after a physical disk failure.
D. Failure groups contain all ASM disks in a single storage server preventing mirror copies being written to the same storage server.

Answer: A

NEW QUESTION # 32
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 Power Distribution Units (PDUs)
C. the RDMA over Converged Ethernet (RoCE) switches
D. Oracle clusterware on the database server
E. ASM instances
F. the storage server ILOM

Answer: B,C,F

Explanation:
According to Oracle's documentation12, the components that are monitored directly through the use of Exadata-specific Enterprise Manager Plug-Ins are:
The storage server ILOM2
The Power Distribution Units (PDUs)2
The RDMA over Converged Ethernet (RoCE) switches3

NEW QUESTION # 33
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. using the CELLCLI list LUN DETAIL command as the celladmin user
B. using the CELLCLI CALIBRATE command on the storage server after logging in as the root user
C. hardware monitoring using the storage server ILOM
D. using the CELLCLI CALIBRATE command on the storage server after logging in as the celladmin user

Answer: C,D

Explanation:
The CELLCLI CALIBRATE command can be used to check the health of all flash cards in the storage server, and it should be run after logging in as the celladmin user. The hardware monitoring using the storage server ILOM should also be used to check for errors and other potential issues with the flash cards. The CELLCLI list LUN DETAIL command should not be used to identify a damaged or failing flash card, since it will not provide any information about the health of the flash card.

NEW QUESTION # 34
Examine this list of software components:
1. Oracle KVM Guest
2. Oracle Enterprise Manager Agent (OMA)
3. ASM instance
4. RDBMS instance
5. Automatic Diagnostic Repository Command Interpreter (ADRCI)
6. CELLCLI
7. Cell Server(CELLSRV)
8. diskmon
9. Restart Server (RS)
10. Management Server (MS)
What is the correct location where these software components can run in the standard Exadata Database Machine deployment?

A. 1, 2, 3, 4, 9 and 10 run on the database servers; 5, 6, 7, 8, 9, and 10 run on the Exadata storage servers.
B. 3, 4, 8, and 10 run on the database servers; 1, 2, 5, 6, 7 and 9 run on the Exadata storage servers.
C. 2, 3, 4, 8, and 10 run on the database servers; 1, 5, 6, 7and 9 run on the Exadata storage servers.
D. 1, 2, 3, 4, 5, 8, 9 and 10 run on the database servers; 5, 6,7, 9 and 10 run on the Exadata storage servers.
E. 1, 2, 3, 4, 8 and 9 run on the database servers; 5, 6, 7, 9 and 10 run on the Exadata storage servers.

Answer: D

Explanation:
Oracle KVM Guest: This is a virtual machine that runs on top of Oracle Linux KVM hypervisor. It can be used to run Oracle Database or other applications on Exadata Database Machine2. Therefore, it runs on the Database Servers.
Oracle Enterprise Manager Agent (OMA): This is a software agent that communicates with Oracle Enterprise Manager Cloud Control and provides monitoring and management capabilities for Exadata Database Machine2. Therefore, it runs on both Database Servers and Storage Servers.
ASM instance: This is an instance of Oracle Automatic Storage Management (ASM), which is a volume manager and a file system for Oracle Database files. It manages disk groups that span across multiple Storage Servers2. Therefore, it runs on the Database Servers.
RDBMS instance: This is an instance of Oracle Database that processes SQL statements and executes transactions. It uses ASM disk groups to store data files, control files, redo log files, etc2. Therefore, it runs on the Database Servers.
Automatic Diagnostic Repository Command Interpreter (ADRCI): This is a command-line tool that enables you to view diagnostic data stored in the Automatic Diagnostic Repository (ADR). ADR is a file-based repository for database diagnostic data such as trace files, alert logs, etc2. Therefore, ADRCI runs on both Database Servers and Storage Servers, depending on where the ADR is located.
CELLCLI: This is a command-line interface that enables you to configure and manage Exadata Storage Server Software. It allows you to perform tasks such as creating disk groups, monitoring cell health, applying patches, etc2. Therefore, it runs on the Storage Servers.
Cell Server(CELLSRV): This is a process that runs on each Storage Server and handles I/O requests from the Database Servers. It implements Exadata Smart Scan , which offloads data-intensive SQL operations from the Database Servers to the Storage Servers2. Therefore, it runs on the Storage Servers.
diskmon: This is a process that monitors the status of disks and flash devices on each Storage Server. It reports disk failures and performs automatic disk reclamation2. Therefore, it runs on the Storage Servers.
Restart Server (RS): This is a process that manages automatic restarts of critical processes such as CELLSRV , MS , or OMA in case of failures. It also handles graceful shutdowns and startups of all processes on each server2. Therefore, it runs on both Database Servers and Storage Servers.
Management Server (MS): This is a process that provides management services for each server such as collecting metrics , logging events , executing commands from CELLCLI , etc2. Therefore, it runs on both Database Servers and Storage Servers

NEW QUESTION # 35
You are updating your Exadata X9M-2 Elastic Database Machine with 6 database servers and 12 High Capacity Storage Servers. You will be using patchmgr to apply updates across the entire machine while still maintaining database availability.
Assuming you are driving patchmgr from an external server, which statement is true about the execution phase?

A. patchmgr cannot apply updates in a rolling manner, you must manually apply patches with the dbnodeudpate and cellupdate tools if high availability is required.
B. patchmgr must be invoked with the -rolling argument. Each component type must be upgraded independently of the other.
C. patchmgr must be invoked with the -rolling argument with all database and storage servers listed in a single input file.
D. patchmgr will apply patches in component groups consisting of 1 database server and 2 storage servers to minimize disruption.

Answer: C

NEW QUESTION # 36
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 only one database server in both racks
B. on all database servers and at least two storage servers in both racks
C. on all storage servers in both racks
D. on at least two storage servers in both racks
E. on all database servers in the first rack
F. on all database servers in both racks and one storage server in each rack
G. on all database servers in the second rack

Answer: B,F

NEW QUESTION # 37
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 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.
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 cluster networking between the database servers in the VM Cluster. This provides security and isolation between multiple tenants or VM clusters.

Answer: D

Explanation:
Exadata Secure RDMA Fabric isolation is a feature that allows you to use virtualization on the X9M-2 platform while maintaining security and isolation between multiple tenants or VM clusters. Secure Fabric isolation works by creating a dedicated network partition and VLAN ID for each Database VM cluster, which is used for cluster networking between the database servers in the VM Cluster. This ensures that the network traffic of each VM cluster is isolated from the others, and it prevents unauthorized access to the data or resources of other VM clusters. Secure Fabric isolation can also be used for other purposes such as client networking, Data Guard traffic, but it's mainly used to provide security and isolation between multiple tenants or VM clusters.
According to Oracle's documentation1, Exadata Secure RDMA Fabric Isolation is a feature that enables strict network isolation for Oracle Real Application Clusters (Oracle RAC) clusters on Exadata Database Machine systems that use RDMA over Converged Ethernet (RoCE). Exadata Secure RDMA Fabric Isolation uses RoCE VLANs to ensure that network packets from one VM cluster cannot be seen by another VM cluster. VLAN tag enforcement is done at the KVM host level, which means that security cannot be bypassed by any software exploits or misconfiguration on the database server VMs1.
Therefore, the statement that is true about how Exadata Secure RDMA Fabric isolation is used in X9M-2 with virtualization enabled is:
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.

NEW QUESTION # 38
I/O performance of the prod database on your Exadata Database Machine has degraded slightly over the past month. The database has been allocated to the OLTP I/O Resource Management (IORM) category.
Which two monitoring tools might be useful in examining I/O performance for the prod database?

A. OS I/O metrics using OS tools such as iostat on the database servers
B. OS I/O metrics using OS tools such as iostat on the storage servers
C. I/O-specific dynamic performance views such as v$iostat_fiie, v$iostat_function, and v$iostat_consumer_group from the prod database instances using SQL *p1us
D. OS I/O metrics using Enterprise Manager host pages for the storage servers
E. cellcli (or exacli/exadcli) to examine storage server metrics such as database, category, ceiidisk, and griddisk

Answer: C,E

Explanation:
According to the Oracle documentation1, two monitoring tools that might be useful in examining I/O performance for the prod database are:
cellcli (or exacli/exadcli) to examine storage server metrics such as database, category, ceiidisk, and griddisk (D). This tool can help you monitor the I/O Resource Management (IORM) metrics and identify any bottlenecks or imbalances in the storage layer.
I/O-specific dynamic performance views such as v$iostat_fiie, v$iostat_function, and v$iostat_consumer_group from the prod database instances using SQL *plus. These views can help you monitor the I/O activity and latency at the file, function, and consumer group level.

NEW QUESTION # 39
What are two recommended configuration best practices for backup and recovery on Exadata?

A. Placing the backup network on dedicated switches installed in the top of the rack (ToR) has the benefits of isolating the backup network from other workloads and providing a greater level of control.
B. Even if the backup was limited to writing to four tape drives, eight channels could be specified to expedite the restore process.
C. When off-site long-term backup retention is needed, use Oracle Database Backup Cloud Service as a low-cost, offsite scalable storage for a disaster recovery solution.
D. The internal Recovery Appliance backup and restore processing is optimized when the RMAN FILESPERSET parameter is set to 1 for the level 1 incremental backup set.

Answer: A,C

Explanation:
According to the Oracle Exadata Database Machine documentation12, two recommended configuration best practices for backup and recovery on Exadata are:
A) Placing the backup network on dedicated switches installed in the top of the rack (ToR) has the benefits of isolating the backup network from other workloads and providing a greater level of control.
D) When off-site long-term backup retention is needed, use Oracle Database Backup Cloud Service as a low-cost, offsite scalable storage for a disaster recovery solution.

NEW QUESTION # 40
Which dbmcli command is NOT valid on Exadata X9M?

A. dbmcli -e "LIST IBPORT DETAIL"
B. dbmcli -e "LIST METRICHISTORY WHERE name LIKE 'DS_.*'"
B) dbmcli -e "LIST METRICCURRENT WHERE name = 'DS_TEMP' "
C. dbmcli -e "LIST ALERTHISTORY WHERE agelnMinutes < 15"

Answer: C

NEW QUESTION # 41
......

Oracle Exadata Database Machine X8M is a next-generation database appliance that provides a high-performance and scalable platform for database operations. The Oracle 1Z0-902 certification exam is designed for professionals who want to demonstrate their expertise in implementing and managing the Exadata Database Machine X8M. Oracle Exadata Database Machine X8M Implementation Essentials certification is ideal for database administrators, system administrators, and IT professionals who are responsible for managing and maintaining Oracle databases.

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[Q25-Q41] Get 100% Passing Success With True 1z1-902 Exam! [Apr-2024]

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