ORACLE 1Z0-902 VALID TEST LABS, EXAM 1Z0-902 FLASHCARDS

Oracle 1Z0-902 Valid Test Labs, Exam 1Z0-902 Flashcards

Oracle 1Z0-902 Valid Test Labs, Exam 1Z0-902 Flashcards

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Oracle Exadata Database Machine X8M Implementation Essentials Sample Questions (Q55-Q60):

NEW QUESTION # 55
Which three of the following options are available for database consolidation on Exadata?

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

Answer: A,C,D


NEW QUESTION # 56
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. 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.
  • D. 1, 2, 3, 4, 8 and 9 run on the database servers; 5, 6, 7, 9 and 10 run on the Exadata storage servers.
  • E. 2, 3, 4, 8, and 10 run on the database servers; 1, 5, 6, 7and 9 run on the Exadata storage servers.

Answer: C

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 # 57
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. 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.
  • C. Failure groups contain all ASM disks in a single storage server preventing mirror copies being written to the same storage server.
  • D. Extended Redundancy mirrors data across data centers providing the highest levels of data protection.

Answer: B

Explanation:
Failure groups provide redundancy in Oracle Exadata Database Machine X9M by ensuring that mirror copies of the data are written to different storage servers [1][2]. This prevents the potential for mirror copies to be written to the same server, which would cause a data loss if that server were to experience a physical disk failure. Furthermore, failure groups help to ensure that the ASM Flex instances are enabled on a maximum of two database servers or VMs per cluster, providing an extra layer of data protection. Additionally, Extended Redundancy mirrors data across data centers, providing the highest levels of data protection. Reference: Oracle Exadata Database Machine X9M Implementation Essentials [1][2], Chapter 5: Configuring Oracle ASM.


NEW QUESTION # 58
Which three statements are true about the CELLCLI command?

  • A. It has command-line history.
  • B. It requires root privileges to create CELLDISKS and GRIDDISKS.
  • C. It can execute commands on multiple storage servers in parallel.
  • D. It can be executed on storage servers.
  • E. It can be executed using the DCLI utility.

Answer: A,D,E

Explanation:
The statements that are true about the CellCLI command are:
It has command-line history . According to 1, you can use the up and down arrow keys to scroll through previous commands that you entered in CellCLI . You can also use Ctrl+R to search for a previous command by entering part of it .
It can be executed on storage servers . According to 1, you can invoke CellCLI by logging in to the Exadata cell as cellmonitor , celladmin , or root user and typing "cellcli" . Within CellCLI , you can perform various management and monitoring tasks for the cell134.
It can be executed using the DCLI utility . According to 5, DCLI (distributed CLI) is another utility that can be used to execute scripts and commands across multiple storage cells from a single interface. You can use DCLI to run CellCLI commands on multiple cells at once54.


NEW QUESTION # 59
Which statement is true about the patching features provided in Platinum Services?

  • A. Oracle Platinum Service covers Exadata storage software and firmware patching, but customers must perform the database patching.
  • B. The rolling and complete down time approaches are two options to patching.
  • C. Patching is done automatically during business hours.
  • D. Patching services are available for the full software stack up to twice per year.

Answer: A


NEW QUESTION # 60
......

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