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Oracle 1Z0-042 Exam Syllabus Topics:

Oracle database 10g:Administration I Sample Questions:

1. Which two statements are true regarding the SGA_TARGET initialization parameter? (Choose two.)

A) Increasing the value of the SGA_TARGET parameter distributes the increased memory among all the autotuned components.
B) Reducing the value of the SGA_TARGET parameter takes away memory from both autotuned and manually sized components.
C) It can be increased up to the value of the SGA_MAX_SIZE parameter.
D) Increasing the value of SGA_TARGET up to the value of SGA_MAX_SIZE disables the automatic shared memory management feature.

2. Which two statements are true about the primary key constraint in a table? (Choose two.)

A) The primary key constraint can be imposed by combining more than one column.
B) It is possible to have more than one primary key constraint in a single table.
C) The primary key constraint can be referred by only one foreign key constraint.
D) It is not possible to disable the primary key constraint.
E) The non-deferrable primary key constraint creates an unique index on the primary key column if it is not already indexed.

3. 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 DATA_PUMP_DIR directory have higher precedence over the per-file directory.
B) The command fails with an error because no absolute path is specified for log file and dumpfile.
C) The command would execute successfully and the export dump file would be created in the destination of the directory object MY_DIR.
D) 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.

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

5. Users of HR schema complain about slower-than-normal performance. On investigation the DBA found that maintenance was recently performed on some of the tables. The DBA traced the query that takes longer than normal to execute.
View the Exhibit exhibit_before.
After the DBA resolves the problem, the query performs normally.
View the Exhibit exhibit_after.
What action would the DBA have taken to resolve the performance problem?

A) reorganized the associated indexes for the EMPLOYEES table that were in an unusable state
B) analyzed the EMPLOYEES table to collect the current statistics
C) moved the EMPLOYEES table to another location in the same tablespace
D) moved the EMPLOYEES table in to a locally managed tablespace
E) moved the indexes associated with the EMPLOYEES table to the same tablespace where the EMPLOYEES table exists

Solutions: