Examine the following statements:

1)MOUNT mounts the database for certain DBA activities, but does not provide user access to the database.

2)The NOMOUNT command creates only the Data Buffer, but does not provide access to the database.

3)The OPEN command enables users to access the database.

4)The STARTUP command starts an instance.

Which of these statements are correct?

You issue the following SQL statement to re-create your database and reuse all the existing database files: CREATE DATABASE Sales DATAFILE '/u01/oradata/Sales/system0l.dbf' SIZE 100M REUSE LOGFILE GROUP 1 ('/u01/oradata/Sales/logla.rdo', '/u02/oradata/Sales/loglb.rdo') SIZE 50K REUSE, GROUP 2 ('/u01/oradata/Sales/log2a.rdo', '/u02/oradata/Sales/log2b.rdo') SIZE 50K REUSE MAXLOGFILES 5 MAXLOGHISTORY 100 MAXDATAFILES 10; The CREATE DATABASE statement fails. Why?

Your company hires a DBA named Allen. He will be starting the database remotely, as he is going to work from home. You created a password file for your database and set REMOTE_LOGIN_PASSWORDFILE = EXCLUSIVE in the parameter file. Which of the following commands will help you add Allen to the password file to allow him to have remote DBA access?

With the help of the Database Configuration Assistant, you can create a template using an existing database structure. Which of the following will be included in this template?

You check the alert log for your database and discover that there are many lines that say 'Checkpoint Not Complete' Which of the following options help solve this problem?

Extents are logical collection of contiguous _________________.