Oracle 1z0-1093-23 Exam Dumps, 1z0-1093-23 Practice Test Questions

Oracle 1z0-1093-23 Exam Dumps & Practice Test Questions

Question No 1:

In the context of Oracle Exadata Database Service, which set of users created on the Database Servers are configured to manage both the Oracle Database itself and the underlying host operating system?

A. root, opc, oracle, and grid users
B. root, opc, oracle, grid, and cloud users
C. opc, oracle, and grid users
D. root, oracle, and grid users

Correct Answer: C. opc, oracle, and grid users

Explanation:

In Oracle Exadata Database Service, a number of default users are set up on the database servers to manage specific administrative roles. Recognizing these users and their functions is crucial for effective system administration and database management.

opc (Oracle Platform CLI): This default operating system user has SSH access to Exadata compute nodes. With sudo privileges, it is primarily used for host-level tasks such as system updates, patching, and general system administration.

oracle: This user manages the Oracle database system. It owns the Oracle software and database binaries, handling responsibilities such as starting and stopping database instances, configuring database settings, and monitoring performance.

grid: This user is in charge of Oracle Grid Infrastructure, including Oracle Clusterware and Automatic Storage Management (ASM). It manages shared storage and clustering services that are essential for high availability in an Exadata setup.

These three users — opc, oracle, and grid — are vital for both host-level and database-level management. While the root user exists, direct SSH login is usually disabled for security purposes, with admin tasks delegated to opc through sudo privileges.

The inclusion of the cloud user is incorrect because this user does not exist by default in Exadata Database Service environments and does not play a standard role in managing either the database or the host system.

Thus, the correct answer is the combination of opc, oracle, and grid users (Option C), as they provide complete control over the Exadata system’s infrastructure and database services.

Question No 2:

You are managing an Oracle Exadata Cloud@Customer environment and have enabled automatic backups to ensure the safety and recoverability of your databases. Oracle's automatic backup process is designed to protect most of the critical database files, including datafiles, control files, SPfile, and archived redo logs. However, certain sensitive or security-related files may require manual intervention and customer-side responsibility to back up.

Which of the following file types is NOT included in the automatic backup process by default and must be manually backed up by the customer to ensure full recoverability of the environment, especially during disaster recovery scenarios?

A. Database archived redo log files
B. Transparent Data Encryption (TDE) keystore (wallet)
C. Server parameter file (SPfile)
D. Database control files

Correct Answer: B. Transparent Data Encryption (TDE) keystore (wallet)

Explanation:

Oracle Exadata Cloud@Customer offers a secure and managed database infrastructure, while also allowing customers to manage database-level operations. With automatic backups enabled, Oracle automatically backs up critical components needed for database restoration, such as datafiles, control files, archived redo logs, and the server parameter file (SPfile). These backups are crucial for point-in-time recovery and ensuring data consistency.

However, the Transparent Data Encryption (TDE) keystore, also known as the wallet, is not automatically included in backups. TDE encrypts sensitive data in the database to protect it from unauthorized access. The keystore holds the master encryption keys, and without it, any TDE-encrypted data cannot be decrypted, even if the other database files are restored.

Due to the sensitive nature of the TDE keystore and its potential security implications, Oracle requires customers to manually manage and back it up. Regular backups are necessary, especially after changes like generating new keys or rotating existing ones. If the keystore is not backed up, data may become irrecoverable during disaster recovery scenarios, as the encrypted data will remain inaccessible.

Best practices recommend storing the TDE wallet backup in a secure location separate from other database backups and incorporating it into disaster recovery plans. Automating the keystore backup using secure scripts or integrating it with enterprise backup solutions is also suggested to ensure operational efficiency and compliance.

In summary, although Oracle handles most database backups automatically in Exadata Cloud@Customer, backing up the TDE keystore is the customer's responsibility to maintain data security and accessibility.

Question No 3:

Your organization utilizes Oracle Exadata Database Service on Dedicated Infrastructure (ExaDB-D) within the Oracle Cloud. Although automated backups are already enabled for the system, there is a requirement to manually trigger database backups at specific milestones — such as before major software updates or infrastructure modifications.

Which approach enables you to manually initiate a backup without interfering with the automatic backup settings?

A. Select the Create Backup option found under the Backup section on the Database Details page via the OCI Console to start a manual backup.
B. Log into the database VM using the Oracle operating system user and initiate a manual backup using terminal-based tools.
C. Temporarily disable automatic backups and then perform the manual backup process.
D. Manual backup functionality is not available in Exadata DB Service; only scheduled automatic backups are supported.

Correct Answer:
A. Select the Create Backup option found under the Backup section on the Database Details page via the OCI Console to start a manual backup.

Explanation:

Oracle Cloud Infrastructure offers robust automated backup features for Exadata Database Service on Dedicated Infrastructure, ensuring that daily recovery points are consistently available. However, operational scenarios like system upgrades often demand the flexibility to take immediate, on-demand backups.

To accommodate such needs, Oracle allows users to trigger backups manually via the OCI Console without suspending or impacting the existing automated backup configurations. From the Database Details page of the specific database instance, the Create Backup button under the Backup section provides a streamlined method to launch a full backup instantly. This feature ensures that data integrity is safeguarded before critical tasks are performed.

Notably, this process does not require command-line access, changes to backup scheduling, or downtime. It seamlessly integrates with the automated backup retention and storage strategy already in place, using the same Oracle-managed Object Storage for backup data.

Hence, Option A is the correct choice, as it reflects the recommended and supported method for on-demand backups in Exadata on OCI.

Question No 4:

In Oracle Cloud Infrastructure, when setting up Oracle Data Guard for Exadata Database Service, it's essential to grasp the built-in automation tools, supported configurations, and best practices to establish a resilient disaster recovery (DR) strategy.

Which two of the following statements accurately reflect how Data Guard functions and should be deployed in Exadata Database Service on OCI?
(Choose two correct answers.)

A. It is advisable to align the hardware and configuration of both Primary and Standby databases to ensure stable performance during role transitions.
B. Oracle Cloud offers automated provisioning of Data Guard using either a simple API invocation or a single action in the OCI Console.
C. Active Data Guard enables both reading and writing operations on the Standby database while synchronization is ongoing.
D. Manual intervention is required to create and configure the Standby database since automation is not supported in OCI for Exadata.
E. After enabling Data Guard, the transport mode (synchronous or asynchronous) becomes fixed and cannot be altered.

Correct Answers:
A. It is advisable to align the hardware and configuration of both Primary and Standby databases to ensure stable performance during role transitions.
B. Oracle Cloud offers automated provisioning of Data Guard using either a simple API invocation or a single action in the OCI Console.

Explanation:

Oracle Data Guard provides a reliable method for maintaining a synchronized replica of your production database, ensuring data protection and high availability. Within OCI, setting up Data Guard for the Exadata Database Service is highly streamlined and user-friendly.

Option A is valid because consistency in CPU, storage type, and configuration across the Primary and Standby systems guarantees seamless transitions during failover or switchover events. Mismatched setups can result in degraded performance or incompatibility issues.

Option B is accurate, as Oracle has simplified the configuration of Data Guard in OCI. Administrators can initiate the entire setup — including creation, configuration, and monitoring of the Standby system — via a single action in the Console or through the OCI API. This eliminates the complexities typically associated with DR setups.

Option C is incorrect since Active Data Guard supports read-only access to the Standby system. Write access is exclusive to the Primary database unless a switchover or failover occurs.

Option D is also incorrect. Manual setup is not required; OCI automates the entire Data Guard setup for Exadata services.

Option E is not accurate either. Transport modes (such as synchronous and asynchronous) can be adjusted post-deployment depending on your RTO/RPO needs.

Together, these features offer a robust, easily manageable disaster recovery framework for enterprise environments hosted on OCI.

Question No 5:

You are overseeing two Oracle Homes: OH193_A and OH193_B, both located under the /u02 directory, which is currently 80% full. Each Oracle Home supports its own test database—193A on OH193_A and 193B on OH193_B. To improve storage efficiency, you decide to consolidate both databases into OH193_A and decommission OH193_B.

During this migration, your goal is to move database 193B to OH193_A with minimal service disruption. Which two actions are essential for completing this consolidation successfully?

A. Plan a scheduled downtime with the team responsible for using the 193B database
B. Copy the sqlnet.ora and spfile configuration files from OH193_B to OH193_A and restart all Pluggable Databases (PDBs)
C. Create a new container database under OH193_B and migrate the Pluggable Databases (PDBs) from 193B to 193A
D. Use the "Move Database" functionality from the Oracle console to migrate the database to the desired Oracle Home (OH193_A)

Correct Answer:
A. Schedule a downtime window with the team using the 193B database
D. Use the Move Database option from the console to relocate the database to the target Oracle Home

Explanation:

Consolidating Oracle databases into a single Oracle Home is a strategic way to free up disk space and reduce administrative overhead. With /u02 already nearing capacity, moving database 193B to OH193_A and retiring OH193_B is a practical step.

Why A is correct: Migration typically involves shutting down services, updating configurations, and testing the new setup. These actions can disrupt users, so planning and communicating a downtime period ensures a smooth transition without impacting operations.

Why D is correct: Oracle tools such as DBCA or Enterprise Manager offer a "Move Database" feature that streamlines the process of relocating a database between Oracle Homes. This tool handles binary relinking, listener reconfiguration, and environment updates with minimal manual intervention.

Why B is incorrect: Simply copying configuration files can introduce mismatches or errors. Files like spfile and sqlnet.ora may contain references specific to the old environment, which may not be valid in the new Oracle Home.

Why C is incorrect: Creating a new container under OH193_B contradicts the objective of decommissioning it. Instead of reducing its footprint, this action would extend its lifecycle and consume additional resources.

Question No 6:

During this migration, your goal is to move database 193B to OH193_A with minimal service disruption. Which two actions are essential for completing this consolidation successfully?

Correct Answer:
A. Schedule a downtime window with the team using the 193B database
D. Use the Move Database option from the console to relocate the database to the target Oracle Home

Explanation:

Question No 7:

You are responsible for patching databases hosted on Oracle Exadata Database Service, with the goal of achieving the highest possible availability and minimizing disruption to users during the patching process.

Which patching method should you choose to ensure the lowest possible downtime?

A. Perform in-place patching on the existing database home
B. Use Patchmgr to apply patches directly to the current database home
C. Utilize Oracle Data Guard to set up a standby database and apply patches to the standby system first
D. Use the Opatch utility to patch the active database home
E. Relocate the database to a newly provisioned database home that includes the desired patch level

Correct Answer: E. Move the database to a new Home with the desired patch level

Explanation:

The most effective strategy for patching databases with minimal service interruption is Out-of-Place Patching. This approach involves provisioning a new Oracle Home, applying and validating patches on it in advance, and then relocating the database to this new environment. The transition causes minimal downtime, often just a brief moment during the switch.

Why E is correct: Moving to a pre-patched Oracle Home avoids altering the current environment, reduces risk, and shortens downtime significantly.

Why A, B, D are incorrect: In-place patching on an active Oracle Home requires stopping services, which results in more downtime and poses a higher risk in case of failure.

Why C is incorrect: Using Data Guard for patching involves additional setup and complexity, and while effective for disaster recovery, it's not the preferred method for routine patching in all environments.

Question No 8:

You have executed the "Stop" command via the OCI Console for a virtual machine (VM) that belongs to an Exadata Database Service (virtual machine cluster) within Oracle Cloud Infrastructure (OCI). This command shuts down only the specified VM, while the remainder of the Exadata infrastructure continues functioning as configured.

Which two statements accurately describe the outcomes of stopping a VM in an Exadata VM cluster? (Select two)

A. Billing for the CPU usage (OCPU) stops, but charges for the Exadata Infrastructure continue.
B. The resources of the stopped VM remain isolated and are not reassigned to other systems or clusters.
C. Executing the "Stop" command halts every VM within the same VM cluster.
D. All databases running across the entire VM cluster are automatically stopped.
E. Both OCPU and Exadata Infrastructure charges are suspended until the VM is restarted.

Correct Answers:
A. Billing for the CPU usage stops, but infrastructure billing continues.
B. The stopped VM is isolated and not reallocated.

Explanation:

Stopping a VM within an Exadata Database Service on Oracle Cloud affects only the selected virtual machine. This operation does not interfere with other VMs in the cluster or the Exadata Infrastructure as a whole.

Explanation A:
Once the VM is stopped, Oracle suspends billing for the OCPUs dedicated to that specific VM. This provides cost efficiency when the compute capacity is not required. However, infrastructure components like storage, networking, and other system-level services remain provisioned, so charges for the Exadata Infrastructure continue.

Explanation B:
Even after stopping the VM, its configuration and assigned resources are preserved. These resources are not made available to other clusters or tenants. This ensures isolation, security, and a seamless restart experience.

Explanation C:
The "Stop" operation affects only the VM it is applied to. Other VMs within the same cluster remain operational unless explicitly managed.

Explanation D:
Stopping one VM does not halt all databases in the cluster. Only databases tied specifically to the stopped VM are affected.

Explanation E:
Billing for the infrastructure does not stop, even if the VM is inactive. Only OCPU charges are paused.

Therefore, the most accurate statements about this scenario are A and B.

Question No 9:

You have chosen to shut down a specific virtual machine (VM) within an Exadata Database Service VM cluster in Oracle Cloud Infrastructure (OCI) through the Console interface. This action powers off the designated VM but does not interrupt the ongoing operation of the Exadata Infrastructure or the remaining VMs in the cluster.

Which two of the following statements correctly reflect what happens when a VM in this Exadata VM cluster is stopped? (Select two)

A. CPU-related charges are suspended, but costs for the infrastructure continue to accumulate.
B. The deactivated VM retains its configuration and is not made available to other clusters or services.
C. Initiating a stop command through the Console causes all VMs in the cluster to shut down.
D. Every database running on the VM cluster shuts down automatically.
E. All billing, including for CPUs and Exadata Infrastructure, is put on hold until the VM restarts.

Correct Answers:
A. CPU-related charges are suspended, but costs for the infrastructure continue to accumulate.
B. The deactivated VM retains its configuration and is not made available to other clusters or services.

Explanation:

In Oracle Cloud Infrastructure (OCI), Exadata Database Service on virtual machines (VMs) offers fine-grained control over each virtual machine within a cluster. When you stop a VM through the OCI Console, it performs a clean shutdown of that specific VM but does not impact the broader environment such as the Exadata rack, storage, or the other active VMs within the cluster.

Explanation for Option A:
Charges in OCI are broken down into separate components: OCPU usage and Exadata Infrastructure. When you stop a VM, the OCPUs (Oracle CPUs) allocated to it are no longer billed. However, the Exadata Infrastructure—comprising storage, network, and management services—remains provisioned for your tenancy. As a result, infrastructure charges continue to apply regardless of whether a VM is active or stopped. This helps customers optimize costs for compute but not necessarily for the entire platform.

Explanation for Option B:
A stopped VM in a virtual machine cluster does not relinquish its assigned resources. Its configuration, IP assignments, block storage, and metadata remain intact. This means Oracle does not reallocate that VM to other tenants or clusters, preserving data security and environment consistency. This allows administrators to stop a VM for maintenance, patching, or temporary suspension without losing its state or requiring reconfiguration.

Clarification for Option C:
The stop action is localized to the selected VM. Other VMs in the same cluster continue operating normally unless you manually perform a similar action on them. This design supports flexible workload management.

Clarification for Option D:
Databases running across the cluster do not automatically shut down when a single VM is stopped. Only the databases that are actively running on the stopped VM will be unavailable. Others in the cluster continue operating based on the VMs they reside on.

Clarification for Option E:
While CPU billing is paused for the stopped VM, infrastructure costs persist. Therefore, billing is not entirely paused. This distinction is important for cost planning and resource optimization.

Question No 10:

You decide to power off a single virtual machine (VM) within an Exadata Database Service VM cluster in Oracle Cloud Infrastructure (OCI) using the OCI Console. This action specifically targets the chosen VM without affecting the rest of the infrastructure or the other VMs within the same cluster.

Which two statements accurately describe the outcomes of halting a VM in such a setup? (Select two)

A. Charges related to the VM’s OCPU usage are suspended, but fees for the underlying Exadata infrastructure remain active
B. The stopped VM retains its dedicated resources and configuration, which are not reassigned to other services or clusters
C. Initiating the stop command causes all virtual machines in the cluster to shut down simultaneously
D. All databases running across the cluster are terminated as a result of stopping one VM
E. Billing for both the compute and infrastructure components pauses entirely when the VM is stopped

Correct Answers:
A. Charges related to the VM’s OCPU usage are suspended, but fees for the underlying Exadata infrastructure remain active
B. The stopped VM retains its dedicated resources and configuration, which are not reassigned to other services or clusters

Explanation:

In Oracle Cloud Infrastructure (OCI), when managing an Exadata Database Service that runs on virtual machines, each VM operates independently within a broader cluster. Administrators have the flexibility to stop, start, or modify specific VMs without impacting others in the same cluster. This granular control supports performance optimization and cost efficiency.

Stopping a VM from the OCI Console initiates a controlled shutdown of that particular machine. It is crucial to understand what this shutdown affects and what remains unchanged:

Impact on Billing:
When a VM is shut down, the compute charges—specifically for Oracle CPUs (OCPUs)—linked to that virtual machine are no longer billed. This allows for optimized expenditure by avoiding unnecessary compute costs when the VM is inactive. However, stopping the VM does not suspend charges related to the Exadata Infrastructure. These include storage, networking, and system management layers that remain provisioned and dedicated to the customer’s tenancy. Infrastructure billing continues until the resources are explicitly decommissioned.

Resource Retention and Isolation:
A stopped VM retains its previously allocated resources, including storage volumes, network configuration, and metadata. These resources are not released or reassigned to other clusters or customers. This retention ensures both security and operational continuity, so once the VM is restarted, it returns to its original state with no loss in data or configuration.

Cluster Behavior:
Shutting down one VM does not cascade to others. Each VM functions autonomously within the virtual machine cluster, and stopping one does not halt the entire cluster. Similarly, only the databases running on the stopped VM become unavailable—other databases on active VMs remain accessible and continue operating as normal.

Common Misconceptions:
A frequent misunderstanding is that shutting down a single VM pauses all associated costs or impacts all VMs. In reality, the design of OCI's Exadata VM clusters allows precise control, enabling cost management and operational flexibility without systemic disruption.

To summarize, stopping a VM results in suspended compute billing for that VM and retention of its resources, while infrastructure charges continue. These behaviors are central to OCI’s scalable and secure cloud database architecture.