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Oracle 1Z0-042 Exam Syllabus Topics:

Oracle database 10g:Administration I Sample Questions:

1. Your test database is running in NOARCHIVELOG mode. What are the implications of this?

A) You can perform open database backups.
B) You cannot perform schema-level logical backups.
C) You can perform closed database backups.
D) You can perform the backup of only the SYSTEM tablespace when the database is open.

2. The ST_INFO master table has millions of rows that are updated very rarely. It has a STATE_CODE column that contains the value for 25 states. The table is frequently queried on the STATE_CODE column. Which type of index would you suggest to improve the query performance?

A) function based
B) bitmap
C) B-tree
D) reverse key

3. The application workload on your database is same between 10 a.m. and 11 a.m. on weekdays. Suddenly you observe poor performance between 10 a.m. and 11 a.m. in the middle of the week. How would you identify the changes in configuration settings, workload profile, and statistics to diagnose the possible causes of the performance degradation?

A) by analyzing the output of the V$ACTIVE_SESSION_HISTORY view
B) by using the Automatic Workload Repository Compare Period report
C) by using the Automatic Workload Repository report
D) by using the SQL access advisor
E) by running the Automatic Database Diagnostic Monitor (ADDM)

4. You executed the following command to export the EMPLOYEES table from a remote machine:
$ EXPDP hr/[email protected]
DUMPFILE=my_dir:exp_hr.log
LOGFILE=data_pump_dir:log_hr.log
TABLES=employees
What would be the outcome of this command?

A) The command fails with an error because no absolute path is specified for log file and dumpfile.
B) The command would execute successfully. But log file would not be created as DATA_PUMP_DIR directory is only accessible to user with SYSDBA privilege.
C) The command fails with an error because DATA_PUMP_DIR directory have higher precedence over the per-file directory.
D) The command would execute successfully and the export dump file would be created in the destination of the directory object MY_DIR.

5. Which three statements are correct about temporary tables? (Choose three.)

A) Both the data and the structure of temporary tables can be exported.
B) Data manipulation language (DML) locks are never acquired on the data of temporary tables.
C) Temporary tables are always created in a user's temporary tablespace.
D) The data inserted into a temporary table in a session is available to other sessions.
E) Indexes and views can be created on temporary tables.

Solutions: