Exam Sample 1Z1-182 Questions & 1Z1-182 Reliable Mock Test

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Oracle 1Z1-182 Exam Syllabus Topics:

Topic	Details
Topic 1	Configuring Oracle Net Services: This section measures the skills of Network Administrators and Database Administrators in configuring Oracle Net Services. It includes identifying administration components, describing connection methods, and ensuring seamless communication between clients and databases.
Topic 2	Managing Undo: This domain measures the skills of Database Administrators in using undo data effectively. It compares undo data with redo data and explains temporary undo usage for efficient transaction management.
Topic 3	Describe Managing Database Instances: This section tests the knowledge of Database Administrators in performing essential tasks for managing database instances. It includes starting and shutting down databases, utilizing dynamic performance views, managing initialization parameter files, and using the Automatic Diagnostic Repository (ADR) for troubleshooting.
Topic 4	Managing Users, Roles, and Privileges: This domain evaluates the expertise of Security Administrators in implementing user security measures. It focuses on creating and managing users, roles, and privileges to ensure secure access to Oracle databases.
Topic 5	Introduction to Performance: This section evaluates the expertise of Performance Analysts in summarizing Oracle database performance management techniques. It includes measuring database performance using SQL execution plans, directives, and advisors to ensure optimal system efficiency.
Topic 6	Managing Tablespaces and Datafiles: This section assesses the abilities of Storage Administrators in creating, modifying, and describing tablespaces. It also covers recognizing data storage requirements and understanding datafile placement for efficient storage management.

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Exam Sample 1Z1-182 Questions & Oracle 1Z1-182 Reliable Mock Test: Oracle Database 23ai Administration Associate Pass Certainly

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Oracle Database 23ai Administration Associate Sample Questions (Q79-Q84):

NEW QUESTION # 79
Which statement is true about database links?

A. A database link can be created only between two Oracle databases.
B. A public database link can be used by a user connected to the local database instance to connect to any schema in the remote database instance.
C. Private database link creation requires the same user to exist in both the local and the remote databases.
D. A database link created in a database allows a connection from that database's instance to the target database's instance, but not vice versa.
E. A public database link can be created only by SYS.

Answer: D

Explanation:
Database links enable cross-database queries in Oracle. Let's analyze each option with extensive detail:
A . A public database link can be created only by SYS.
False. Any user with the CREATE PUBLIC DATABASE LINK privilege (not just SYS) can create a public link (e.g., CREATE PUBLIC DATABASE LINK remote_db CONNECT TO scott IDENTIFIED BY tiger USING 'orcl'). While SYS typically has this privilege, it's not exclusive to SYS.
Mechanics:Privilege is granted via GRANT CREATE PUBLIC DATABASE LINK TO user;. Public links are accessible to all users in the local DB.
Why Incorrect:Overly restrictive; Oracle's security model allows delegation.
B . A database link can be created only between two Oracle databases.
False. Database links can connect to non-Oracle databases using Oracle Heterogeneous Services or gateways (e.g., ODBC or JDBC drivers), such as linking to SQL Server. Example: CREATE DATABASE LINK mssql_link USING 'hsodbc';.
Mechanics:Requires configuration of hs_ parameters in init.ora and a gateway listener.
Historical Note:Heterogeneous links were introduced in 8i, expanded in 23ai for cloud integration.
C . A database link created in a database allows a connection from that database's instance to the target database's instance, but not vice versa.
True. A database link is unidirectional; it enables queries from the local instance to the remote instance (e.g., SELECT * FROM emp@remote_db), but the remote instance can't use it to query back unless a separate link is created there.
Mechanics:Stored in DBA_DB_LINKS, the link defines a one-way connection via a TNS alias or connect string.
Practical Use:Ensures controlled access; bidirectional access requires explicit configuration.
Edge Case:Loops are prevented unless explicitly designed with mutual links.
D . A public database link can be used by a user connected to the local database instance to connect to any schema in the remote database instance.
False. Public links allow all local users to use them, but access to remote schemas depends on the link's credentials (e.g., CONNECT TO scott) and the user's remote privileges. "Any schema" overstates it; access is limited to what the link's user can see.
Why Incorrect:Misrepresents privilege scope; remote schema access isn't universal.
E . Private database link creation requires the same user to exist in both the local and the remote databases.
False. A private link (e.g., CREATE DATABASE LINK my_linkCONNECT TO scott IDENTIFIED BY tiger USING 'orcl') requires the remote user (scott) to exist, but the local creator (e.g., HR) need not match. The link is owned locally and authenticated remotely.
Mechanics:Only the CREATE DATABASE LINK privilege is needed locally.

NEW QUESTION # 80
Which data dictionary view describes the data sources of external tables?

A. DBA_ALL_USER_TAB_COLUMNS
B. DBA_ALL_USER_EXTERNAL_LOCATIONS
C. DBA_ALL_USER_EXTERNAL_TABLES
D. DBA_ALL_USER_TABLES

Answer: B

Explanation:
A .True. DBA_EXTERNAL_LOCATIONS (or prefixed variants) shows external table data sources (e.g., file paths).
B-D .False. These views cover columns or tables but not external sources specifically.

NEW QUESTION # 81
Which two statements are true about views used for viewing tablespace and datafile information?

A. A datafile can be renamed when the database is in MOUNT state and the new file name is displayed when querying DBA_DATA_FILES after the database is opened.
B. V$TABLESPACE displays information that is contained in the control file about tablespaces.
C. Tablespace free space can be viewed in V$TABLESPACE.
D. V$TABLESPACE displays information about tablespaces contained in the data dictionary.
E. Tablespace free space can be viewed in DBA_TABLESPACES.

Answer: A,B

Explanation:
A .False. V$TABLESPACE doesn't show free space directly.
B .False. It's from the control file, not the data dictionary.
C .True. Renaming in MOUNT state updates DBA_DATA_FILES post-open.
D .False. DBA_TABLESPACES shows attributes, not free space directly (use DBA_FREE_SPACE).
E .True. V$TABLESPACE reflects control file data.

NEW QUESTION # 82
Which two AWR-based tools listed below are part of Oracle Database self-tuning components?

A. Automatic Application Tracing used to collect High-Load SQL statements and statistics.
B. ADDM, a server-based expert that reviews database performance statistics captured by Snapshots to identify potential problems before system performance degrades noticeably.
C. Automatic Application Tracing used to collect High-Load SQL statements and statistics.
D. Automatic capture of statistical information from the SGA and storing it in the AWR using Automatic Database Diagnostic.
E. Automatic population of performance views (V$ views) from statistical data stored in AWR repository and using Automatic Database Diagnostic.
F. Automatic Diagnostic Collector used to capture and store database errors and hung analysis.

Answer: B,D

Explanation:
False. No "Automatic Application Tracing" exists as an AWR tool. SQL tracing (e.g., DBMS_MONITOR) is manual, and high-load SQL is captured by AWR indirectly via V$SQL snapshots, not a distinct tracing tool.
Why Incorrect:Conflates manual tracing with AWR's passive collection.
Explanation:
The Automatic Workload Repository (AWR) is a cornerstone of Oracle's self-tuning capabilities, collecting and storing performance statistics for analysis. Let's dissect each option:
A : Automatic capture of statistical information from the SGA and storing it in the AWR using Automatic Database Diagnostic.
True. AWR automatically captures statistics (e.g., wait events, SQL stats) from the System Global Area (SGA) via the MMON (Manageability Monitor) process, storing them in the AWR repository (in SYSAUX). This is part of the Automatic Database Diagnostic Monitor (ADDM) framework, though "Automatic Database Diagnostic" likely refers to this broader mechanism.
Mechanics:Snapshots are taken hourly by default (configurable via DBMS_WORKLOAD_REPOSITORY.MODIFY_SNAPSHOT_SETTINGS), persisting data like DBA_HIST_SYSSTAT for self-tuning analysis.
Practical Use:Enables historical performance tracking, feeding tools like ADDM and SQL Tuning Advisor.
Edge Case:If STATISTICS_LEVEL=BASIC, AWR collection is disabled, haltingself-tuning.
Historical Note:Introduced in 10g, enhanced in 23ai for finer granularity.
B : ADDM, a server-based expert that reviews database performance statistics captured by Snapshots to identify potential problems before system performance degrades noticeably.
True. The Automatic Database Diagnostic Monitor (ADDM) analyzes AWR snapshots to proactively detect issues (e.g., high CPU usage, I/O bottlenecks) and recommend fixes. It runs automatically after each snapshot in maintenance windows.
Mechanics:ADDM uses DBA_ADVISOR_FINDINGS to log issues, leveraging AWR data like DBA_HIST_SQLSTAT. Example: It might suggest adding an index for a slow query.
Practical Use:Prevents performance degradation in production systems by catching trends early.
Edge Case:Limited by snapshot frequency; real-time issues may need manual intervention.
C : Automatic Diagnostic Collector used to capture and store database errors and hung analysis.
False. No such tool exists as an "Automatic Diagnostic Collector" in AWR context. This likely confuses the Incident Packaging Service (IPS) or ADR (Automatic Diagnostic Repository), which handles errors but isn't AWR-based or self-tuning.
Why Incorrect:ADR collects trace files and logs, not AWR statistics, and isn't part of self-tuning.
D : Automatic population of performance views (V$ views) from statistical data stored in AWR repository and using Automatic Database Diagnostic.
False. V$ views (e.g., V$SESSION) are real-time memory structures in the SGA, not populated from AWR, which is historical (e.g., DBA_HIST_*). AWR doesn't back-feed V$ views; the reverse occurs via snapshots.
Why Incorrect:Misunderstands the data flow; AWR is a sink, not a source for V$ views.

NEW QUESTION # 83
Which three statements are true about the tools used to configure Oracle Net Services?

A. Enterprise Manager Cloud Control can be used to centrally configure net service names for any database server target.
B. The Oracle Net Configuration Assistant is only used when running the Oracle installer.
C. Oracle Net Manager can be used to centrally configure listeners on any database server target.
D. The lsnrctl utility requires a listener.ora file to exist before it is started.
E. Enterprise Manager Cloud Control can be used to centrally configure listeners on any managed database server.
F. Oracle Net Manager can be used to locally configure naming methods on a database server.

Answer: A,E,F

Explanation:
A .False. Net Manager is local, not centralized.
B .False. NetCA can run standalone.
C .True. EMCC manages service names centrally.
D .True. EMCC configures listeners on managed targets.
E .False. lsnrctl starts a default listener if no listener.ora exists.
F .True. Net Manager configures local tnsnames.ora.

NEW QUESTION # 84
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