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Oracle 1Z0-042 Exam Syllabus Topics:

Oracle database 10g:Administration I Sample Questions:

1. Your database is in NOARCHIVELOG mode and a logswitch happens every 20 minutes. On Thursday morning, media failure resulted in corruption of a data file belonging to the TOOLS tablespace. Backups are taken on every Sunday. What would you do in this situation?

A) restore the entire database from the most recent backup and start the instance and open the database
B) restore only the corrupted data file and perform tablespace recovery
C) restore the data files from backup and perform cancel-based recovery
D) recover using Oracle Flashback Database technology
E) restore the data files from backup and perform a complete recovery

2. In your database, the snapshot interval is set to 10 minutes for the Automatic Workload Repository (AWR). The database instance is running for the past 30 days.
View the Exhibit to examine the Automatic Database Diagnostic Monitor (ADDM) task.
The ADDM task is performed every 10 minutes, except the last task. What could be the reason for this?

A) The optimizer statistics was collected manually by using the DBMS_STATS package before the last task.
B) The optimizer statistics for few objects in the database were locked before the last task.
C) The STATISTICS_LEVEL initialization parameter was changed to BASIC and reset to TYPICAL before the last task.
D) The snapshot retention period for the AWR was increased before the last task.

3. Your alert log file has the following information:
Tue May 25 17:43:38 2004
ORA-00060: Deadlock detected. More info in file /u01/app/oracle/admin/ORCL/udump/orcl_ora_3173.trc.
What would you do to ensure that database is still running correctly?

A) examine the trace file for details and remember that deadlocks are resolved automatically by Oracle database
B) examine the trace file and kill both the sessions responsible for the deadlock
C) examine the trace file for details and use the Undo Advisor to rollback the transaction that caused the deadlock
D) examine the trace file for details and ask the user who caused the deadlock to roll back the transaction
E) examine the trace file and kill the session that caused the deadlock

4. The HR user owns the EMP table. The HR user grants privileges to the SCOTT user by
using this command:
SQL> GRANT SELECT,INSERT,UPDATE ON emp TO scott WITH GRANT OPTION;
The SCOTT user executes this command to grant privileges to the JIM user:
SQL> GRANT SELECT,INSERT,UPDATE ON hr.emp TO jim;
Now the HR user decides to revoke privileges from JIM by using this command:
SQL> REVOKE SELECT,INSERT,UPDATE ON emp FROM jim;
Which statement is true after HR issues the REVOKE command?

A) The command succeeds and privileges are revoked from JIM.
B) Only HR can perform SELECT, INSERT, and UPDATE operations on the EMP table.
C) The command fails because HR cannot revoke the privileges from JIM.
D) The command fails because SCOTT still has privileges with him.

5. View the Exhibit.
Your Oracle 10g database has 6 tablespaces in which:
-TEMP is the default temporary tablespace
-UNDOTBS1 is the default undo tablespace -USERS is the default permanent tablespace In this database, which two tablespaces can be made read only? (Choose two.)

A) USERS
B) UNDOTBS1
C) TEMP
D) SYSTEM
E) SYSAUX
F) PROD

Solutions: