1Z0-183 sample questions

Question 1

You are the Senior DBA for a healthcare provider running Oracle Database 23ai. You need to configure a new backup strategy for a mission-critical PDB named `PATIENTS`. The requirements state that you must be able to recover the PDB to any point in time within the last 30 days, and you must minimize the backup window. You decide to use RMAN with Block Change Tracking (BCT). Where must the Block Change Tracking file be enabled?

Accepted Answer

At the CDB root level only.

Answer

At the PDB level using `ALTER PLUGGABLE DATABASE`.

Answer

At the tablespace level within the specific PDB.

Answer

At the PDB level, but only if the PDB is in `READ WRITE` mode.

Question 2

A developer approaches you with a performance issue in an Oracle 23ai database. They have a table `SALES_DATA` with 500 million rows. They frequently run analytic queries that filter on `REGION_ID` and aggregate `SALES_AMOUNT`. The query performance is sluggish. You decide to implement the In-Memory Column Store. Which action will most effectively improve the performance of these specific queries without affecting the OLTP performance of the application?

Accepted Answer

Enable the In-Memory Column Store for the `SALES_DATA` table and specify `PRIORITY CRITICAL`.

Answer

Partition the table by `REGION_ID` and enable Row Movement.

Answer

Create a B-Tree index on `REGION_ID` and `SALES_AMOUNT`.

Answer

Use the `DBMS_ADVISOR` package to create a SQL Profile for the analytic queries.

Question 3

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?

Accepted Answer

AI Vector Search with the `VECTOR` data type

Answer

JSON Relational Duality with the `JSON` data type

Answer

SecureFiles LOBs with the `BLOB` data type

Answer

Oracle Text with the `CLOB` data type

Question 4

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?

Accepted Answer

opatchauto

Answer

AutoUpgrade

Answer

DBUA

Answer

OPatch

Question 5

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?

Accepted Answer

Lock-Free Reservations

Answer

Automatic Indexing

Answer

Blockchain Tables

Answer

True Cache

Question 6

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?

Accepted Answer

AWR_PDB_SNAPSHOT

Answer

V$SYSSTAT

Answer

V$SESSION

Answer

DBA_HIST_SNAPSHOT

Free 1Z0-183 sample questions

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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