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Oracle 1Z0-042 Exam Syllabus Topics:

Oracle database 10g:Administration I Sample Questions:

1. You received complaints about the degradation of SQL query performance. You identified top SQL queries that consume time. What would be your next step to find out recommendations about statistics collection and restructuring of the SQL statement to improve query performance?

A) run the Automatic Database Diagnostic Monitor (ADDM) on top SQL statements
B) run SQL Tuning Advisor on top SQL statements
C) run Segment Advisor
D) run the Automatic Workload Repository (AWR) report

2. The HR user creates a view with this command:
SQL> CREATE VIEW emp_v AS SELECT * FROM scott.emp;
Now HR wants to grant the SELECT privilege on the EMP_V view to the JIM user. Which statement is true in this scenario?

A) HR can grant the privilege to JIM because HR is the owner of the view.
B) HR can grant the privilege to JIM but without GRANT OPTION.
C) SCOTT has to grant the SELECT privilege on the EMP table to JIM before this operation.
D) HR needs the SELECT privilege on the EMP table with GRANT OPTION from SCOTT for this operation.

3. Your database instance is started using the server parameter file (SPFILE). Control files are multiplexed and stored on different disks. Because of a disk failure, you lost one of these control files. You replaced the damaged disk. What is the correct sequence of steps that you would follow to recover the control file?
1.Shut down the instance, if not already done.
2.Copy one of the remaining control files to a new location.
3.Change the value of the CONTROL_FILES initialization parameter to correspond to the new location of the control files.
4.Start up the database instance to the NOMOUNT stage.
5.Recover the database to the point of failure of the control file.
6.Open the database.

A) 5,2,3,4
B) 4,5,6,2,3
C) 1,2,4,3,5
D) 2,4,3,4,5

4. You backed up the control file to trace. Which statement is true about the trace file generated?

A) The trace file is an image copy of the control file created during the backup of the control file.
B) The trace file contains the instructions to manually re-create the control file.
C) The trace file is a backup set created during the backup of the control file.
D) The trace file has a SQL script to re-create the control file.
E) The trace file is in binary format.

5. User SCOTT executes the following command on the EMP table but has not issued COMMIT, ROLLBACK, or any data definition language (DDL) command:
SQL> SELECT job FROM emp
2 WHERE job='CLERK' FOR UPDATE OF empno;
SCOTT has opened another session to work with the database. Which three operations would wait when issued in SCOTT's second session? (Choose three.)

A) INSERT INTO emp(empno,ename) VALUES (1289,'Dick');
B) SELECT job FROM emp WHERE job='CLERK' FOR UPDATE OF empno;
C) LOCK TABLE emp IN SHARE MODE;
D) LOCK TABLE emp IN EXCLUSIVE MODE;
E) DELETE FROM emp WHERE job='MANAGER';

Solutions: