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Oracle 1Z0-042 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Data Movement | 6% | - SQL*Loader & Data Pump - Export/Import Utilities |
| Installation & Creation | 10% | - Creating a Database with DBCA - Installing Oracle Database Software |
| Network Environment | 6% | - Connectivity & Naming Methods - Configuring the Listener |
| Schema Objects | 10% | - Views, Sequences & Synonyms - Managing Tables, Indexes & Constraints |
| Database Architecture & ASM | 8% | - Oracle Database Architecture - Automatic Storage Management (ASM) |
| User & Security Administration | 10% | - Creating & Managing Users - Privileges & Roles - Database Security Implementation |
| Instance Management | 12% | - Data Dictionary & Dynamic Performance Views - Starting and Stopping Database - Initialization Parameters |
| Backup & Recovery | 16% | - Complete & Incomplete Recovery - Backup Concepts & Strategies - Flashback Technology - Using RMAN for Backups |
| Storage Structures | 12% | - Control Files & Redo Log Files - Managing Undo Data - Tablespaces & Datafiles |
| Performance & Maintenance | 10% | - Scheduler & Automated Tasks - Automatic Database Diagnostic Monitor (ADDM) - Automatic Workload Repository (AWR) |
Oracle database 10g:Administration I Sample Questions:
Which two statements are true about the primary key constraint in a table? (Choose two.)
- A. It is not possible to disable the primary key constraint.
- B. The non-deferrable primary key constraint creates an unique index on the primary key column if it is not already indexed.
- C. The primary key constraint can be imposed by combining more than one column.
- D. It is possible to have more than one primary key constraint in a single table.
- E. The primary key constraint can be referred by only one foreign key constraint.
Correct Answer: B,C 🗳️
After being hired as a database administrator, you find that there is only one database that is functional and that is being accessed by the applications. You want to create a replica of the database, to be used for testing purposes. What is the best method to create the replica?
- A. use DBCA to create a template from the existing database to contain the database structure with data files and then use the same template to create the database in the new location
- B. create a database by using CREATE DATABASE .. command and manually copy the data
- C. use Database Configuration Assistant (DBCA) to create a template from the existing database to contain the database structure
- D. use DBCA to create a template from the existing database to contain the database structure and then manually copy the data using Oracle Data Pump
Correct Answer: A 🗳️
The user SCOTT executes the following command successfully to increase the salary values in one of his sessions:
SQL> UPDATE emp SET sal=sal*1.15 WHERE deptno=20;
Before SCOTT ends the transaction, user HR who has the privileges on EMP table executes a query to fetch the salary details but finds the old salary values instead of the increased values.
Why does HR still see the old data?
- A. because of data from database buffer cache
- B. because of undo data from the undo tablespace
- C. because of redo data from redo log file
- D. because of data from a temporary tablespace
Correct Answer: B 🗳️
The SAVE_AMT column in the ACCOUNTS table contains the balance details of customers in a bank. As part of the year-end tax and interest calculation process, all the rows in the table need to be accessed. The bank authorities want to track access to the rows containing balance amounts exceeding $200,000, and then send an alert message to the administrator. Which method would you suggest to the bank for achieving this task?
- A. implementing value-based auditing by using triggers
- B. performing standard database auditing to audit object privileges by setting the AUDIT_TRAIL parameter to EXTENDED
- C. performing standard database auditing to audit SQL statements with granularity level set to ACCESS
- D. implementing fine-grained auditing with audit condition and event handler
Correct Answer: D 🗳️
You are working on an online transaction processing (OLTP) system. You notice that a PL/SQL procedure got executed twice at 2:00 p.m. This has incorrectly updated the EMP_SAL table. How would you revert the table to its state at 2:00 p.m.?
- A. Perform point-in-time recovery to 2:00 p.m.
- B. Issue the rollback statement with system change number (SCN).
- C. Use Flashback Table feature to revert the changes.
- D. Restore the entire database from the recent backup and open it.
Correct Answer: C 🗳️
