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Oracle 1Z0-042 Actual Tests : Oracle database 10g:Administration I
About Oracle 1Z0-042 Exam Actual Tests
Oracle 1Z0-042 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Performance & Maintenance | 10% | - Scheduler & Automated Tasks - Automatic Database Diagnostic Monitor (ADDM) - Automatic Workload Repository (AWR) |
| Topic 2: Storage Structures | 12% | - Control Files & Redo Log Files - Tablespaces & Datafiles - Managing Undo Data |
| Topic 3: Database Architecture & ASM | 8% | - Oracle Database Architecture - Automatic Storage Management (ASM) |
| Topic 4: Data Movement | 6% | - Export/Import Utilities - SQL*Loader & Data Pump |
| Topic 5: Backup & Recovery | 16% | - Flashback Technology - Backup Concepts & Strategies - Using RMAN for Backups - Complete & Incomplete Recovery |
| Topic 6: Schema Objects | 10% | - Managing Tables, Indexes & Constraints - Views, Sequences & Synonyms |
| Topic 7: User & Security Administration | 10% | - Privileges & Roles - Creating & Managing Users - Database Security Implementation |
| Topic 8: Network Environment | 6% | - Configuring the Listener - Connectivity & Naming Methods |
| Topic 9: Installation & Creation | 10% | - Creating a Database with DBCA - Installing Oracle Database Software |
| Topic 10: Instance Management | 12% | - Data Dictionary & Dynamic Performance Views - Initialization Parameters - Starting and Stopping Database |
Oracle database 10g:Administration I Sample Questions:
You executed the following command to start the database:
SQL> STARTUP ORACLE instance started.
Total System Global Area 281018368 bytes
Fixed Size
789000 bytes
Variable Size
229635576 bytes
Database Buffers
50331648 bytes
Redo Buffers
262144 bytes
ORA-00205: error in identifying controlfile, check alert log for more info
Which view would you query at this stage to investigate this missing control file?
- A. V$INSTANCE
- B. DBA_CONTROL_FILES
- C. V$DATABASE_PROPERTIES
- D. V$CONTROLFILE
- E. V$CONTROLFILE_RECORD_SECTION
Correct Answer: D 🗳️
Your database is having two control files, three redo log file groups with two members in each group. Failure of which file would cause an instance to shut down?
- A. one of the redo log members
- B. loss of the initialization parameter file
- C. any archive log file
- D. any data file belonging to the default permanent tablespace
- E. any control file
Correct Answer: E 🗳️
Which naming method uses the tnsnames.ora file to store the connect descriptor used by the client while connecting to the database instance from a remote machine?
- A. external naming method
- B. host naming method
- C. local naming method
- D. directory naming method
Correct Answer: C 🗳️
Which three statements are true regarding the logical structure of the Oracle database? (Choose three.)
- A. It is possible to have tablespaces of different block sizes in a database.
- B. Each data block in the database always corresponds to one OS block.
- C. Multiple tablespaces can share single data file.
- D. Each segment contains one or more extents.
- E. A data block is the smallest unit of I/O for data files.
Correct Answer: A,D,E 🗳️
User A executes the following command to update the TRANS table:
SQL> UPDATE B.trans SET tr_amt=tr_amt+500 WHERE c_code='C005';
Before user A issues a COMMIT or ROLLBACK command, user B executes the following
command on the TRANS table:
SQl> ALTER TABLE trans MODIFY (tr_type VARCHAR2(3));
What would happen in this scenario?
- A. The ALTER TABLE command waits until user A ends the transaction.
- B. The ALTER TABLE command fails due to the resource being busy.
- C. The ALTER TABLE command modifies the column successfully.
- D. The transaction for user A is rolled back.
Correct Answer: B 🗳️
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