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NEW QUESTION # 54
At 2:15 PM, an application developer accidentally executes a destructive DROP TABLE command on a production Oracle database managed by NDB. The last scheduled daily snapshot occurred at midnight, but log catch-up is enabled and healthy. The developer requires a copy of the data exactly as it appeared at 2:10 PM to recover the lost table without interrupting the live production instance.
How should the NDB administrator proceed?
Answer: B
Explanation:
Creating a point-in-time clone is the correct nondisruptive recovery action. NDB Time Machine combines snapshots with captured Oracle archive logs to construct a database at a selected recoverable timestamp.
Choosing 2:10 PM replays the available logs only through that moment, which precedes the 2:15 PM DROP TABLE. Because the result is a separate clone, the production database remains online and unchanged while the administrator extracts and returns the missing table data. A restore would rewind the source database itself and could interrupt or overwrite its current state. Refresh applies to an existing clone rather than creating the required recovery copy, while a Software Profile defines database software instead of transactional content.
Nutanix's Oracle cloning guidance therefore supports option D. Nutanix Oracle clone documentation
NEW QUESTION # 55
As administrator has been asked to add a database to a PostgreSQL instance already managed by NDB.
Which task should be performed?
Answer: D
Explanation:
When an administrator is asked to add a database to a PostgreSQL instance already managed by NDB, the most appropriate task is to add a new database to the existing source database. In NDB, a PostgreSQL instance refers to a managed database server or cluster, and adding a new database involves creating it within the existing instance using NDB's database management capabilities. This can be done through the NDB GUI or CLI by selecting the source database and adding the new database, leveraging the current configuration and resources without requiring new VM provisioning.
* Option A (Add a new database to a source DB) is correct as it directly addresses adding a database to an existing managed instance.
* Option B (Register a new DB VM to add the DB) is incorrect because a new VM registration is unnecessary when the instance is already managed.
* Option C (Provision a new DB server VM and add the new DB) is incorrect because provisioning a new VM is overkill for adding a database to an existing instance.
* Option D (Update a database clone to add a new DB) is incorrect because clones are read-only copies, not suitable for adding new databases.
This approach ensures efficiency and leverages the existing NDB-managed infrastructure.
References
* Nutanix Database Service (NDB) User Guide, Chapter 4: Managing Database Engines, Section:
Managing Databases in an Instance
* Nutanix Certified Professional - Database Automation (NCP-DB) v6.5 Blueprint, Section 4: Manage Database Engines
NEW QUESTION # 56
A DBA executed a script which corrupted an Oracle DB managed by NDB. After few minutes, the NDB administrator has been asked to create a copy of the DB using the latest available snapshot.
Which actions should be taken?
Answer: C
Explanation:
After a DBA's script corrupts an Oracle DB managed by NDB, the administrator needs to restore a clean copy using the latest available snapshot. The most straightforward action is to use the NDB Time Machine feature to select the most recent uncorrupted snapshot and create a new clone. This clone can serve as a restored version of the database, bypassing the corrupted data while leveraging existing snapshots for efficiency.
* Option A (Fail the Oracle cluster over to a surviving RAC node) is incorrect because RAC failover is for HA, not corruption recovery via snapshots.
* Option B is correct as it uses Time Machine to create a clone from a valid snapshot, addressing the corruption.
* Option C (Use Time Machine to create a clone from file-level database backup) is incorrect because NDB primarily uses snapshots, not file-level backups, for cloning.
* Option D (Provision a new Oracle DB and perform log catch-up) is incorrect because provisioning a new DB is more complex and unnecessary when a snapshot-based clone suffices.
This method ensures rapid recovery with minimal disruption.
References
* Nutanix Database Service (NDB) User Guide, Chapter 5: Configuring Time Machines, Section:
Restoring and Cloning from Snapshots
* Nutanix Support & Insights, Knowledge Base Article: "Recovering from Database Corruption in NDB"
* Nutanix Certified Professional - Database Automation (NCP-DB) v6.5 Blueprint, Section 5: Protect Databases Using Time Machine
NEW QUESTION # 57
An administrator has been tasked with OS and database patching in a Nutanix NDB environment. The administrator wishes to automate these activities.
What should the administrator configure to accomplish this task?
Answer: A
Explanation:
To automate OS and database patching in a Nutanix NDB environment, the administrator should configure a Maintenance Window. A Maintenance Window in NDB allows the administrator to schedule automated patching tasks (e.g., OS updates and database software updates) during specified time periods, minimizing disruption to production workloads. This feature integrates with software profiles and can be set to run periodically or on-demand, ensuring patches are applied efficiently and consistently across the environment.
Option A (Access Control) is incorrect because Access Control manages user permissions, not automation of patching.
Option B (Pulse) is incorrect because Pulse is a monitoring tool, not a scheduling mechanism for patching.
Option C (Maintenance Window) is correct as it provides the scheduling and automation framework for patching activities.
Option D (SMTP Server) is incorrect because SMTP is for email notifications, not patching automation.
This configuration enhances operational efficiency and reliability.
References
Nutanix Database Service (NDB) User Guide, Chapter 4: Managing Software Profiles, Section: Scheduling Maintenance Windows Nutanix Certified Professional - Database Automation (NCP-DB) v7.5Blueprint, Section 4: Manage Database Software Profiles
NEW QUESTION # 58
A new administrator is tasked with changing the NDB GUI password via CLl.
Which command will accomplish this task?
Answer: A
Explanation:
To change the NDB GUI password via the CLI, the administrator should use the command era-server > security password reset. This command interacts with the NDB server (referred to as era-server in the CLI context) to reset the password for the GUI admin user. The process typically prompts for the new password and confirmation, ensuring secure password management. This is the supported method for CLI-based password changes in NDB.
Other options are incorrect:
A). sudo passwd era: The passwd command is for Linux user accounts, not NDB-specific GUI credentials.
B). sudo user name admin password: This is not a valid command syntax for NDB CLI.
C). era-server > username admin password: This lacks the correct subcommand (security password reset) and syntax.
Thus, the verified answer is D, aligning with NDB's CLI security management.
Official Nutanix Database Automation References
Nutanix Database Management & Automation (NDMA) course, Module 2: Deploying and Configuring an NDB Solution, Lesson 2.6: Managing NDB via CLI.
Nutanix Certified Professional - Database Automation (NCP-DB) v7.5Knowledge Objectives, Section 2:
Deploy and Configure an NDB Solution, Objective 2.5: Manage NDB Security (applicable to v7.5).
Nutanix NDB Administration Guide: "Changing GUI Password via CLI" section, detailing era-server commands.
NEW QUESTION # 59
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