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1Z0-023 - Architecture and Administration - Real Exam Questions

Vendor Name Oracle
Exam Code 1Z0-023
Exam Name Architecture and Administration
Questions and Answers 151 Q & A
Updated On September 19, 2017
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1Z0-023 Demo and Sample

Note: Answers are below each question.
Samples are taken from full version.



Which command is NOT a valid syntax?

A. ALTER INDEX summit.orders_region_id_idx COALESCE B. ALTER INDEX summit.orders_region_id_idx RESIZE 500M

  1. ALTER INDEX summit.orders_region_id_idx REBUILD ONLINE

  2. ALTER INDEX summit.orders_region_id_idx REBUILD TABLESPACE indx02

Answer: B


Answer B is correct. You cannot resize index to particular value. This command is incorrect.

Incorrect Answers:

A: You can coalesce unused space in index by this command. C: It's possible to rebuild index online.

D: It's possible to use this command to move index data into different tablespace. Oracle 8, DBA Certification Exam Guide, Jason S. Couchman, p. 416-425

Chapter 9: Managing Database Objects II


In which two cases do you need to perform a conventional path load? (Choose two)

  1. When clustered tables must be loaded.

  2. When you need to reorganize the database tables.

  3. When the load should not generate redo log entries.

  4. When the data should be loaded as fast as possible.

  5. When transactions must make changes the tables being loaded.

    Answer: A, E


    Answers A and E are correct. To make changes to the tables being loaded and load clustered tables you need perform a conventional path load, not direct load.

    During conventional path loads:

    1. COMMITs are used to make changes permanent.

    2. Redo log entries are always generated.

    3. All enabled constraints are enforced.

    4. INSERT triggers fire.

    5. Clustered tables can be loaded.

    6. Other users can make changes to the tables being loaded.

      Incorrect Answers:

      B: You cannot reorganize the database tables by using conventional path load. C: Conventional path load will generate redo log entries by definition.

      D: When the data should be loaded as fast as possible, use direct path load, not conventional one. Oracle 8, DBA Certification Exam Guide, Jason S. Couchman, p. 531-534

      Chapter 11: Data Loads and National Language Support

      QUESTION 148:

      Which SQL statement allows direct path loads?


      2. INSERT /*+DIRECT*/...

      3. UPDATE /*+DIRECT*/...

      4. INSERT INTO...VALUES...

Answer: B


Answer B is correct. Statement INSERT /*+DIRECT*/... allows direct path loads.

Incorrect Answers:

A: This statement allows conventional path loads. C: Updates cannot be done with direct path loads. D: This statement allows conventional path loads.

Oracle 8, DBA Certification Exam Guide, Jason S. Couchman, p. 531-534 Chapter 11: Data Loads and National Language Support


Which two statements about direct load in SQL *Loader are true? (Choose two)

  1. Insert triggers fire.

  2. Redo is always generated.

  3. All constraint types are enforced.

  4. The data can be loaded in parallel.

  5. The tables are locked to prevent DML.

  6. Clustered tables can be used with direct loads.

Answer: D, E


Answers D and E are correct. During the direct load in SQL*Loader the data can be loaded in parallel and the tables are locked to prevent DML operations with tables.

Incorrect Answers:

A: Insert triggers will not fire during direct load process by definition.

B: Redo log entries will not be generated during direct load process by definition.

C: Only PRIMARY KEY, UNIQUE and NOT NULL constraints are enforced during direct load process.

F: Clustered tables cannot be loaded with direct loads by definition.


How can DBA enable restricted sessions at startup?





Answer: A


Answer A is correct. STARTUP RESTRICT command enables restricted sessions at startup. Other way to restrict database access is command ALTER SYSTEM ENABLE RESTRICTED SESSION after the database is open.

Incorrect Answers:

B: This command will not enable restricted sessions at startup. C: This command will not enable restricted sessions at startup.

D: This command will enable restricted session, but only AFTER the database is open, not at startup.

Oracle 8, DBA Certification Exam Guide, Jason S. Couchman, p. 287-288 Chapter 6: Basics of the Oracle Database Architecture


Which two database tasks can be performed in nomount stage? (Choose two)

  1. Renaming data files.

  2. Creating a database.

  3. Creating a control file.

  4. Creating a database user.

  5. Opening the redo log files.

Answer: B, C


Answers B and C are correct. It's possible only create database and control file in NOMOUNT stage.

Incorrect Answers:

A: To rename data files you need to have mounted database.

D: To create a database user database must be mounted and opened for usage. E: The redo log files are opened only after database was opened.

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