Oracle 1Z0-042 : Oracle database 10g:Administration I
- Exam Code: 1Z0-042
- Exam Name: Oracle database 10g:Administration I
- Updated: Oct 06, 2026
- Q & A: 185 Questions and Answers
About Oracle 1Z0-042 Exam
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Oracle 1Z0-042 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Data Movement | 6% | - Export/Import Utilities - SQL*Loader & Data Pump |
| Topic 2: Schema Objects | 10% | - Managing Tables, Indexes & Constraints - Views, Sequences & Synonyms |
| Topic 3: Network Environment | 6% | - Connectivity & Naming Methods - Configuring the Listener |
| Topic 4: Database Architecture & ASM | 8% | - Oracle Database Architecture - Automatic Storage Management (ASM) |
| Topic 5: Installation & Creation | 10% | - Creating a Database with DBCA - Installing Oracle Database Software |
| Topic 6: Instance Management | 12% | - Data Dictionary & Dynamic Performance Views - Starting and Stopping Database - Initialization Parameters |
| Topic 7: Performance & Maintenance | 10% | - Scheduler & Automated Tasks - Automatic Database Diagnostic Monitor (ADDM) - Automatic Workload Repository (AWR) |
| Topic 8: User & Security Administration | 10% | - Database Security Implementation - Privileges & Roles - Creating & Managing Users |
| Topic 9: Storage Structures | 12% | - Managing Undo Data - Control Files & Redo Log Files - Tablespaces & Datafiles |
| Topic 10: Backup & Recovery | 16% | - Backup Concepts & Strategies - Using RMAN for Backups - Complete & Incomplete Recovery - Flashback Technology |
Oracle database 10g:Administration I Sample Questions:
You find that the database performance degrades while you backup the PROD database using Recovery Manager (RMAN). The PROD database is running in shared server mode. The database instance is currently using 60% of total operating system memory. You suspect the shared pool fragmentation to be the reason. Which action would you consider to overcome the performance degradation?
- A. Increase Shared Pool size to cache more PL/SQL objects.
- B. Configure Streams Pool to enable parallel processing.
- C. Increase the total System Global Area (SGA) size to increase memory hits.
- D. Increase Database Buffer Cache size to increase cache hits.
- E. Configure Java Pool to cache the java objects.
- F. Configure Large Pool to be used by RMAN and shared server.
Correct Answer: F 🗳️
Your database is not configured for session failover. Your tnsnames.ora file contains the following details:
test.us.oracle.com= (DESCRIPTION= (ADDRESS_LIST= (LOAD_BALANCE=off) (FAILOVER=ON) (ADDRESS=(PROTOCOL=tcp)(HOST=test1-server)(PORT=1521)) (ADDRESS=(PROTOCOL=tcp)(HOST=test2-server)(PORT=1521)))
(CONNECT_DATA=(SERVICE_NAME=test.us.oracle.com)))
Which feature is enabled in this case?
- A. Instance failover
- B. Transparent Application Failover (TAF)
- C. Load balancing
- D. Database failover
- E. Connect-time failover
Correct Answer: E 🗳️
View the Exhibit to see the structure of the EMPLOYEES and DEPARTMENTS tables.
Your organization plans to dissolve the department with department ID 30. You execute the following command to delete rows from the DEPARTMENTS table: SQL>delete from DEPARTMENTS
where DEPT_ID = 30; The command fails and displays the following error: ERROR at line 1:
ORA-02292: integrity constraint (HR.SYS_C005374) violated - child record found Which two actions would you take to overcome this error? (Choose two.)
- A. first, drop the DEPARTMENTS table and then delete the rows from the EMPLOYEES table
- B. first, delete rows from the EMPLOYEES table for department id 30 and then delete the rows from the DEPARTMENTS table for department id 30
- C. first, drop the EMPLOYEES table and then delete the rows from the DEPARTMENTS table
- D. alter the foreign key constraint to include the cascade option
- E. alter the foreign key constraint to include the on delete cascade option
- F. first, delete all of the rows from EMPLOYEES table and then delete the rows from the DEPARTMENTS table for department id 30
Correct Answer: B,E 🗳️
You want to create a new optimized database for your transactional production environment to be used by a financial application. While creating the database, you want the Oracle software to take care of all basic settings to optimize the database performance. Which method would you use to achieve this objective?
- A. Use the Database Configuration Assistant (DBCA) to create the database with Oracle-managed files.
- B. Use the CREATE DATABASE .. command to create the database with Automatic Storage Management (ASM) file system.
- C. Use the CREATE DATABASE .. command to create the database with Oracle-managed files.
- D. Use Enterprise Manager to create a new database with the Online Transaction Processing (OLTP) option.
- E. Use Database Configuration Assistant (DBCA) to create the database with Transaction Processing template.
Correct Answer: E 🗳️
The junior DBA in your organization has accidentally deleted the alert log file. What will you do to create new alert log file?
- A. No action required.The file would be created automatically by the instance.
- B. Create the new text file file as ALERT.LOG.
- C. You have to recover the alert log file from the valid backup.
- D. Change the value for the BACKGROUND_DUMP_DEST parameter.
Correct Answer: A 🗳️
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