Expert Answers to Oracle Exam 1z0-182 Questions

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Oracle Database 23ai Oracle Database 23ai Administration Associate

Oracle Database 23ai Administration Associate

Last Update Feb 21, 2026
Total Questions : 94

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Questions 2

Which two statements are true regarding Oracle database space management within blocks managed by Automatic Segment Space Management (ASSM)?

Options:

ASSM assigns blocks to one of the four fullness categories based on what percentage of the block is allocated for rows.

Update operations always relocate rows into blocks with free space appropriate to the length of the row being updated.

Insert operations always insert new rows into blocks with free space appropriate to the length of the row being inserted.

The first block with enough free space to accommodate a row being inserted will always be used for that row.

PCTFREE defaults to 10% for all blocks in all segments for all compression methods.

Discussion 0

Questions 3

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?

Options:

It overwrites the data for Alan and adds data for Curl and Bob.

It generates a log that contains control file entries, which can be used with normal SQL*Loader operations.

It appends data from EMP.DAT to EMP.

It generates a SQL script that it uses to load data from EMP.DAT to EMP.

It overwrites all data in EMP with data from EMP.DAT.

Discussion 0

Answer:

B, 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.

Explanation: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.

Explanation: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.

Explanation: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.

Explanation: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.

Explanation:False. REPLACE or TRUNCATE would overwrite, but these require a control file with those options. Default APPEND preserves existing data.

[References:Oracle Database Utilities 23ai, "SQL*Loader Command-Line Reference.", , ]

Questions 4

Which two statements are true about views used for viewing tablespace and datafile information?

Options:

Tablespace free space can be viewed in V$TABLESPACE.

V$TABLESPACE displays information about tablespaces contained in the data dictionary.

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.

Tablespace free space can be viewed in DBA_TABLESPACES.

V$TABLESPACE displays information that is contained in the control file about tablespaces.

Discussion 0

Questions 5

What are Oracle Database Metrics?

Options:

Oracle Database Metrics monitor performance using thresholds to generate alerts.

Oracle Database Metrics are part of the Oracle Database Notification system to email information about major database events.

Oracle Database Metrics are a set of measured statistics per unit of time (per second), transaction, or sessions that are used to evaluate performance.

Oracle Database Metrics are part of Oracle Enterprise Manager Cloud Control's Notification system used to email alerts.

Oracle Database Metrics are a set of statistics built in Oracle Enterprise Manager Cloud Control and used for automation.

Discussion 0

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