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Oracle 1Z0-182 Exam Syllabus Topics:

Topic	Details
Topic 1	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 2	Employ Oracle-Supplied Database Tools: This section evaluates the abilities of Database Engineers and Support Specialists in identifying and using Oracle-supplied tools for managing databases. It focuses on leveraging tools to monitor, troubleshoot, and optimize database performance effectively.
Topic 3	Describe Oracle Database Architecture: This section of the exam measures the skills of Database Administrators and System Architects in understanding the Oracle database architecture. It covers the configurations of Oracle database instances, memory structures like SGA and PGA, and process structures such as background processes. It also explains the logical and physical database structures, including datafiles, control files, and redo log files.
Topic 4	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 5	Automated Maintenance: This section measures the skills of Database Administrators in describing automated maintenance tasks within Oracle databases. It focuses on applying automated features to streamline routine maintenance activities.
Topic 6	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 7	Introduction to Auditing: This domain tests the abilities of Compliance Specialists in implementing database auditing practices. It includes creating, modifying, and maintaining auditing policies while applying value-based auditing techniques like Fine-Grained Auditing (FGA).
Topic 8	Moving Data: This section evaluates the expertise of Data Migration Specialists in moving data within Oracle databases. It includes using external tables, executing Oracle Data Pump operations, and distinguishing SQL*Loader commands for importing data efficiently.

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Oracle Database 23ai Administration Associate Sample Questions (Q62-Q67):

NEW QUESTION # 62
Which two statements describe how Optimizer Statistics are collected?

A. Optimizer Statistics are collected by the Statistics Advisor.
B. Optimizer Statistics are collected in real-time as data is inserted, deleted, or updated.
C. Optimizer Statistics can be manually collected at multiple levels using DBMS_STATS.GATHER_*_STATS PL/SQL procedures.
D. Optimizer Statistics are collected automatically by an automatic maintenance job that runsduring predefined maintenance windows.
E. Optimizer Statistics are collected automatically by Automatic Workload Repository (AWR) Snapshot.

Answer: C,D

Explanation:
Optimizer Statistics drive the cost-based optimizer's query plans. Let's dissect each option:
A . Optimizer Statistics are collected automatically by an automatic maintenance job that runs during predefined maintenance windows.
True. Oracle 23ai uses the AutoTask framework to gather stats automatically during maintenance windows (e.g., nightly 10 PM-2 AM). The GATHER_STATS_PROG job, managed by DBMS_AUTO_TASK_ADMIN, collects stats for stale or missing objects.
Mechanics:Controlled by STATISTICS_LEVEL=TYPICAL (default) and the DEFAULT_MAINTENANCE_PLAN. It prioritizes objects with >10% changes (stale stats) or no stats.
Practical Use:Ensures stats are current without manual intervention, critical for dynamic workloads.
Edge Case:Disabled if STATISTICS_LEVEL=BASIC or the job is manually disabled via DBMS_AUTO_TASK_ADMIN.DISABLE.
B . Optimizer Statistics are collected in real-time as data is inserted, deleted, or updated.
False. Stats aren't updated in real-time; this would be too resource-intensive. Instead, Oracle tracks changes (e.g., via DBA_TAB_MODIFICATIONS) and updates stats periodically via AutoTask or manually. Real-time stats exist in 23ai for specific cases (e.g., GATHER_TABLE_STATS with REAL_TIME_STATS), but it's not the default.
Why Incorrect:Real-time collection would degrade performance for OLTP systems, contradicting Oracle's batch approach.
C . Optimizer Statistics can be manually collected at multiple levels using DBMS_STATS.GATHER_*_STATS PL/SQL procedures.
True. The DBMS_STATS package offers granular control: GATHER_TABLE_STATS, GATHER_SCHEMA_STATS, GATHER_DATABASE_STATS, etc., allowing stats collection for tables, schemas, or the entire database.
Mechanics:Example: BEGIN DBMS_STATS.GATHER_TABLE_STATS('HR', 'EMPLOYEES'); END;. Options like ESTIMATE_PERCENT and DEGREE fine-tune the process.
Practical Use:Used for immediate stats updates post-DML or for custom schedules outside maintenance windows.
Edge Case:Overuse can lock stats (e.g., FORCE=TRUE), requiring careful management.
D . Optimizer Statistics are collected by the Statistics Advisor.
False. The Statistics Advisor (new in 23ai) analyzes and recommends stats improvements but doesn't collect them. Collection is still via DBMS_STATS or AutoTask.
Why Incorrect:It's a diagnostic tool, not an executor.
E . Optimizer Statistics are collected automatically by Automatic Workload Repository (AWR) Snapshot.
False. AWR snapshots capture performance metrics (e.g., wait times), not optimizer stats. Stats collection is a separate process via AutoTask or manual commands.
Why Incorrect:AWR and stats collection serve distinct purposes-monitoring vs. optimization.

NEW QUESTION # 63
Which three statements are true about Oracle Managed Files (OMF)?

A. If DB_RECOVERY_FILE_DEST is specified, at least two different locations must be specified for DB_CREATE_ONLINE_LOG_DEST_n.
B. If only DB_CREATE_ONLINE_LOG_DEST_1 is specified, only redo logs and control files are Oracle Managed.
C. If only DB_CREATE_FILE_DEST is specified, only data files and temp files are Oracle managed.
D. If DB_CREATE_ONLINE_LOG_DEST_1 is specified but DB_CREATE_FILE_DEST is not, new data files and temp files are stored in DB_CREATE_ONLINE_LOG_DEST_1 by default.
E. If DB_CREATE_FILE_DEST is specified but DB_CREATE_ONLINE_LOG_DEST_n is not, new redo logs and control files are stored in DB_CREATE_FILE_DEST by default.
F. If DB_RECOVERY_FILE_DEST is specified but DB_CREATE_ONLINE_LOG_DEST_n is not, the redo logs and control files are placed in DB_RECOVERY_FILE_DEST by default.

Answer: D,E,F

Explanation:
A .True. Without DB_CREATE_ONLINE_LOG_DEST_n, redo logs and control files default to DB_RECOVERY_FILE_DEST.
B .False. If only DB_CREATE_FILE_DEST is set, redo logs and control files also use it unless overridden.
C .True. DB_CREATE_ONLINE_LOG_DEST_1 becomes the default for data files and temp files if DB_CREATE_FILE_DEST is unset.
D .True. DB_CREATE_FILE_DEST serves as the default for all file types if no log-specific parameter is set.
E .False. Data files and temp files would also use DB_CREATE_ONLINE_LOG_DEST_1 if no other parameter is specified.
F .False. No such requirement exists; DB_RECOVERY_FILE_DEST operates independently.

NEW QUESTION # 64
Examine these commands:
[oracle@host01 ~]$ sqlplus u1/oracle
SQL> SELECT * FROM emp;
ENO ENAME DN
-------------------------
1 Alan 2
2 Ben 2
SQL> exit
[oracle@host01 ~]$ cat emp.dat
1, Alan, 2
3, Curl, 4
4, Bob, 4
[oracle@host01 ~]$ sqlldr u1/oracle TABLE=emp
Which two statements are true?

A. It appends data from EMP.DAT to EMP.
B. It overwrites the data for Alan and adds data for Curl and Bob.
C. It generates a log that contains control file entries, which can be used with normal SQL*Loader operations.
D. It overwrites all data in EMP with data from EMP.DAT.
E. It generates a SQL script that it uses to load data from EMP.DAT to EMP.

Answer: A,C

Explanation:
SQL*Loader (sqlldr) loads data from external files into Oracle tables. The command sqlldr u1/oracle TABLE=emp uses defaults since no control file is specified. Let's evaluate:
A . It overwrites the data for Alan and adds data for Curl and Bob.
False. SQLLoader's default mode is APPEND, not REPLACE. It doesn't "overwrite" existing rows unless REPLACE or TRUNCATE is specified in a control file. Here, row 1, Alan, 2 exists, and SQLLoader will either skip it (if a primary key rejects duplicates) or raise an error, but it won't overwrite. 3, Curl, 4 and 4, Bob, 4 are appended.
Mechanics:Without a control file, SQL*Loader assumes APPEND and matches columns positionally (ENO, ENAME, DN).
B . It generates a log that contains control file entries, which can be used with normal SQL*Loader operations.
True. SQL*Loader always generates a log file (e.g., emp.log) when invoked. With no control file specified, it auto-generates one internally and logs it, including entries like LOAD DATA INFILE 'emp.dat' APPEND INTO TABLE emp FIELDS TERMINATED BY ',' (ENO, ENAME, DN). This can be reused.
Practical Use:The log's control section is editable for future runs (e.g., changing to REPLACE).
C . It appends data from EMP.DAT to EMP.
True. Default behavior without a control file is APPEND, adding new rows (3, Curl, 4 and 4, Bob, 4) to EMP. Existing rows (1, Alan, 2, 2, Ben, 2) remain unless constrained (e.g., unique key violations).
Mechanics:SQL*Loader processes each line of emp.dat, skipping duplicates if constrained, appending otherwise.
D . It generates a SQL script that it uses to load data from EMP.DAT to EMP.
False. SQL*Loader doesn't generate SQL scripts; it uses direct path or conventional path loading, not SQL scripts. The log contains control file syntax, not a script.
E . It overwrites all data in EMP with data from EMP.DAT.
False. REPLACE or TRUNCATE would overwrite, but these require a control file with those options. Default APPEND preserves existing data.

NEW QUESTION # 65
Script abc.sql must be executed to perform a certain task. User HR with password HR exists in the target database and the account is unlocked. The TNSNAMES.ORA file is up to date. Examine this command attempted by the user: $ sqlplus hr/hr@orcl @abc. What will happen and why?

A. The command succeeds and HR will be connected to the orcl database instance, and the abc script will be executed.
B. The command fails because the script must refer to the full path name.
C. The command fails and reports an error because @ is used twice.
D. The command succeeds and HR will be connected to the orcl database instance, and the abc script will be executed.
E. The command succeeds and HR will be connected to the orcl database and after logging out to the abc database.

Answer: D

Explanation:
A .False. "Logging out to the abc database" is nonsensical; abc is a script, not a database.
B .False. SQL*Plus finds abc.sql in the current directory by default; a full path isn't required unless it's elsewhere.
C .False. The first @ specifies the TNS alias (orcl), the second runs the script (@abc); this is valid syntax.
D & E.True (identical options). The command connects to orcl via TNSNAMES.ORA, authenticates HR, and executes abc.sql.
Mechanics:sqlplus hr/hr@orcl resolves orcl to a listener address, connects, and@abc runs the script post-login.

NEW QUESTION # 66
You must create a tablespace of nonstandard block size in a new file system and plan to use this command: CREATE TABLESPACE ns_tbs DATAFILE '/u02/oracle/data/nstbs_f01.dbf' SIZE 100G BLOCKSIZE 32K; The standard block size is 8K, but other nonstandard block sizes will also be used. Which two are requirements for this command to succeed?

A. DB_32K_CACHE_SIZE should be set to a value greater than DB_CACHE_SIZE.
B. DB_32K_CACHE_SIZE must be set to a value that can be accommodated in the SGA.
C. The operating system must use a 32K block size.
D. The /u02 file system must have at least 100G space for the datafile.
E. DB_32K_CACHE_SIZE must be less than DB_CACHE_SIZE.

Answer: B,D

Explanation:
A .False. No such restriction exists; DB_32K_CACHE_SIZE is independent of DB_CACHE_SIZE.
B .True. A nonstandard block size (32K) requires a corresponding cache (DB_32K_CACHE_SIZE) set to a non-zero value within SGA limits.
C .False. OS block size is irrelevant; Oracle manages its own block sizes.
D .False. No requirement for it to exceed DB_CACHE_SIZE.
E .True. The file system must have 100G available for the datafile.

NEW QUESTION # 67
......

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PASS GUARANTEED QUIZ EFFICIENT 1Z0-182 - LATEST ORACLE DATABASE 23AI ADMINISTRATION ASSOCIATE TRAINING

Pass Guaranteed Quiz Efficient 1Z0-182 - Latest Oracle Database 23ai Administration Associate Training