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Oracle 1Z0-485 Online Practice Questions and Exam Preparation

1Z0-485 Exam Details

  • Exam Code
    :1Z0-485
  • Exam Name
    :Oracle Exadata Database Machine
  • Certification
    :Oracle Certifications
  • Vendor
    :Oracle
  • Total Questions
    :71 Q&As
  • Last Updated
    :Jul 11, 2026

Oracle 1Z0-485 Online Questions & Answers

  • Question 21:

    Which three statements accurately describe update of software on Exadata Database Machine?

    A. The Oracle Database patchset software (for example, 11.2.0.3) requires the Exadata-specific version.
    B. Rolling patching is faster than non-rolling patching, but database down time is longer.
    C. The Oracle Database software on Exadata is updated using standard OPatch and the Oracle Universal Installer.
    D. Running Exadata with different storage server software versions is supported, but should be minimized to rolling patching scenarios.
    E. The database server operating system software (other than kernel and OFED) may be installed or updated from non-Exadata sources
    F. Storage server updates require access to an Unbreakable Linux Network (ULN) based repository.

  • Question 22:

    Why is ASM High redundancy an important configuration choice when rolling Exadata Storage Server patching is planned?

    A. High redundancy protects from partner disk failure while a cell is offline being updated.
    B. High redundancy forces ASM rebalance before allowing disks to be taken offline.
    C. High redundancy speeds up ASM fast mirror resync when a cell is brought back online after patching.
    D. Normal redundancy provides the same protection during rolling patching, so High redundancy is not important in this case

  • Question 23:

    Identify two tasks that the Database Resource Manager can perform, which the I/O Resource Manager cannot.

    A. Manage I/O based on the application that is connected to the database.
    B. Manage the number of parallel sessions for a query.
    C. Manage I/O and CPU between databases on the same cluster or physical database host.
    D. Terminate database sessions when certain limits have been reached.
    E. Manage the throughput of an I/O-bound application based on the service name used for the connection.

  • Question 24:

    Consider the following software changes that are performed manually on a Linux server:

    1.

    Changes for Linux kernel firewall configuration

    2.

    Changes for custom performance monitoring tools

    3.

    Changes for security scan tools

    4.

    Changes for Linux system performance optimization

    Which of the software changes listed are permitted on Exadata Storage Servers?

    A. 1, 2, 3, and 4
    B. only 3 '
    C. none
    D. only 2
    E. only 1 and 2
    F. only 2 and 3

  • Question 25:

    Exadata Database Machine offers an Intelligent Platform Management Interface for the various components in the Exadata product. Which option is true?

    A. IPMI can be used to remotely start and stop servers.
    B. IPMI can be used to remotely log in to the operating system.
    C. IPMI commands can be executed by using SNMP traps.
    D. IPMI settings can be secured by backing up the Oracle Linux installation on the storage system.

  • Question 26:

    Storage indexes are unique to the Exadata Database Machine and their primary goal is to reduce the amount of I/O required to service I/O requests for Exadata Smart Scan. Put the following steps in order:

    1. The Exadata cell services software conducts I/O requests on I MO storage regions.

    2. cellsrv checks the high and low values, and determines the storage region does not contain any values meeting the predicate.

    3. The database is started.

    4. Physical I/O to the region is bypassed if the query selection falls outside the high/low storage index storage.

    5. A query is issued against the MYOBJ_CTRL table that has a predicate OBJECT_ID=1500.

    6. A subsequent query is Issued against the MYOBJ_CTRL table that has a predicate OBJECT_ID=2234.

    7. MYOBJ_STATE'S region index is populated with high and low values for the OBJECT_ID column during the I/O request.

    A. 3. 7, 5, 2, 1, 6, and 4
    B. 3, 7, 1, 5, 6, 2, and 4 C. 3, 6, 1. 7, 2, 5 and 4
    D. 3, 5, 1, 7, 6, 2. and 4

  • Question 27:

    After migrating from legacy disk-based configuration, which three approaches would you use to evaluate the efficiency of Exadata Flash Cache?

    A. Review the Flash Hit rate via cellcli metrics.
    B. Compare Optimized Physical Reads and Total Read Requests in Automatic Workload Repository (AWR).
    C. Review the IOSTAT data that is gathered from each compute node by OS Watcher.
    D. Evaluate the Smart Flash Logging efficiency metrics via CellCLI.
    E. Check I/O latency on large I/O to Temp in AWR.

  • Question 28:

    Identify three Exadata Storage Server software processes and their purpose?

    A. CELLSRV: The Cell Server is responsible for servicing disk I/O and predicate processing offload.
    B. CELLSRV: The Cell Server is responsible for balancing workload to other storage servers.
    C. MS: The Management Server is responsible for storage cell management and configuration.
    D. MS: The Management Server is responsible for starting a local Enterprise Manager agent.
    E. RS: The Restart Server is responsible for Automatic Storage Management (ASM) instance restart.
    F. RS: The Restart Server is responsible for CELLSRV and MS monitoring and restart.

  • Question 29:

    Which two statements are true about Exadata memory capabilities?

    A. X3-8 can be purchased in a Half Rack configuration with 2 TB of memory.
    B. X3-2 memory can be expanded to 512 GB per node from 256 GB.
    C. X3-2 memory can be upgraded to use Flash in the compute nodes.
    D. X3-8 memory is fixed at 4 TB per a Rack.
    E. X3-2 can be purchased in a Half Rack configuration with 256 GB per node.

  • Question 30:

    Which two DML operations will add rows compressed by Hybrid Columnar Compression (HCC) to a table that is created to use HCC?

    A. INSERT
    B. INSERT with an APPEND hint
    C. UPDATE
    D. CREATE TABLE AS SELECT

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