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Oracle database 10g:Administration I Sample Questions:

1. User Scott has updated the salary of one of the employees in the EMPLOYEES table and has not committed the transaction. What are the two types of locks that this scenario would lead to? (Choose two.)

A) null lock on the row being updated
B) shared row-exclusive lock for the row being updated
C) ROW SHARE lock for the row being updated
D) null lock on the table containing the row
E) exclusive table-level lock for the table containing the row
F) ROW EXCLUSIVE lock for the row being updated
G) a shareable table lock for the table containing the row

2. Which step do you need to perform to enable a user with the SYSDBA privilege to log in as SYSDBA in iSQL*Plus?

A) The user must be listed in the password file for the authentication.
B) Set up a user in the Oracle Application Server Containers for J2EE (OC4J) user manager, and grant the webDba role to the user.
C) No special setup is needed for the user to connect as SYSDBA in iSQL*Plus.
D) The user must be granted the database administrator (DBA) privilege.

3. You plan to use static database registration for a new listener when you create it. What could be the two reasons for this? (Choose two.)

A) The Oracle Enterprise Manager is to be used to monitor an Oracle9i database.
B) More than one database is to be registered with the listener.
C) The users will connect the database by using the host naming method.
D) The listener is not configured on the default port of 1521 and the instance is not configured to register with a nondefault port.
E) The database that is to be registered with the listener is configured in shared server mode.

4. 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) bitmap
B) B-tree
C) reverse key
D) function based

5. Your database is functional with peak load for one hour. You want to preserve the performance statistics collected during this period so that they can be used for comparison while analyzing the performance of the database in the future. What action would you take to achieve this task?

A) Create a baseline on a pair of snapshots that have the statistics of the peak-load period in the database.
B) Set the snapshot retention period in the Automatic Workload Repository (AWR) to zero to avoid the automatic purging of the snapshots.
C) Decrease the snapshot interval in the AWR to collect more number of snapshots during the peak-load period.
D) Set the STATISTICS_LEVEL initialization parameter to ALL.

Solutions: