1Z0-183 Sample Questions

1Z0-183 Sample Questions & Answers

Explores performance tuning and diagnostics, the single biggest weight, plus managing CDBs and PDBs, RMAN backup and recovery, patching and upgrading Grid Infrastructure, and new AI Database capabilities such as AI Vector Search.

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Showing 6 of 12 free samples.

  1. Question 1Beginner

    New Feature in Oracle AI Database · Implement AI Vector Search

    Your organization is adopting Oracle Database 23ai to leverage its new AI capabilities. You are designing a schema for a Retrieval-Augmented Generation (RAG) application. You need to store vector embeddings generated from product descriptions to enable semantic search. Which Oracle Database 23ai feature and data type should you use to store these embeddings natively and efficiently?

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    Correct answer: B

    Oracle Database 23ai introduces a native VECTOR data type specifically designed to store and process vector embeddings. This is part of the AI Vector Search feature set, which allows for similarity searches using SQL. This is more efficient and semantically correct than using BLOB or JSON types for vectors.

  2. Question 2Intermediate

    Deploying, Patching and Upgrades · Patching Grid Infrastructure and Databases

    You are managing an Oracle Database 23ai environment and need to perform an out-of-place patching operation for the Grid Infrastructure. Which utility should you use to automate the entire process, including the unlocking and locking of the Grid home, with minimal manual intervention?

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    Correct answer: A

    opatchauto is the preferred tool for patching Oracle Grid Infrastructure and Oracle Database homes in a clustered environment (and standalone GI). It automates the complex steps of stopping services, unlocking the home, applying the patch, relinking, and restarting services. It supports out-of-place patching automation.

  3. Question 3Intermediate

    New Feature in Oracle AI Database · Enhance OLTP and Core Database Features

    A developer is building a high-concurrency ticketing system on Oracle Database 23ai. They are concerned about row contention when multiple users try to reserve tickets simultaneously, leading to wait events. Which new feature in Oracle 23ai should you recommend to automatically handle this concurrency without manual locking code?

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    Correct answer: B

    Lock-Free Reservations allow concurrent transactions to proceed without being blocked by row locks on numeric columns that are being updated (e.g., decremented inventory). The database tracks the reservation intent and defers the actual constraint check until commit time, significantly improving throughput for 'hot' rows.

  4. Question 4Intermediate

    Managing and Tuning Performance · Using AWR-Based Tools to explore and analyze AWR data

    You are troubleshooting a performance issue in a specific PDB SALES_PDB. You suspect that a recent application deployment introduced inefficient SQL. You want to analyze the Automatic Workload Repository (AWR) data specifically for this PDB to identify the problematic SQL statements. Which view should you query to see the AWR snapshots available for this specific PDB?

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    Correct answer: C

    The AWR_PDB_SNAPSHOT view (or DBA_HIST_SNAPSHOT when connected to the PDB) displays AWR snapshots relevant to the PDB. In a multitenant environment, AWR data can be captured at both the CDB and PDB levels. Querying this view from within the PDB gives the snapshot IDs needed to generate a PDB-specific AWR report.

  5. Question 5Intermediate

    Deploying, Patching and Upgrades · Upgrade Oracle Database

    While planning an upgrade from Oracle 19c to Oracle 23ai, you want to ensure that the upgrade process is automated and follows best practices. You decide to use the AutoUpgrade utility. You have created a configuration file config.txt. Which command successfully initiates the upgrade process in DEPLOY mode?

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    Correct answer: A

    The AutoUpgrade utility is a Java-based tool. The correct syntax to run it involves invoking the jar file with the -config parameter pointing to your configuration file and the -mode parameter set to deploy to actually perform the upgrade (as opposed to analyze or fixups).

  6. Question 6Intermediate

    Managing Multitenant Architecture · Securing Multitenant Databases

    You are implementing a security strategy for a multitenant environment. You need to restrict the privileges of a common user C##ADMIN when they connect to a specific PDB HR_PDB. The user should not be able to execute ALTER SYSTEM commands within that PDB, even though they have the privilege granted commonly. Which feature should you use?

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    Correct answer: C

    Lockdown Profiles allow you to restrict operations that are otherwise allowed by privileges. By creating a lockdown profile that disables ALTER SYSTEM and applying it to HR_PDB, you can restrict the common user's ability to perform that action within that specific PDB scope, regardless of their granted privileges.

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