To answer this question, you need to understand how to add a member to a redo log file group in a database.
Let's go through each option to understand why it is correct or incorrect:
Option A) ALTER DATABASE ADD LOGFILE ‘/logs/redo22.log’ TO GROUP 2;
This option is incorrect because it uses the keyword "LOGFILE" instead of "LOGFILE MEMBER". The correct syntax to add a member to a redo log file group is "LOGFILE MEMBER".
Option B) ALTER DATABASE ADD LOGFILE MEMBER ‘/logs/redo22.log’ TO GROUP 2;
This option is correct because it uses the correct syntax to add a member to a redo log file group. The keyword "LOGFILE MEMBER" is used to specify the path of the member to be added.
Option C) ALTER DATABASE ADD MEMBER ‘/logs/redo22.log’ TO GROUP 2;
This option is incorrect because it uses the keyword "ADD MEMBER" instead of "ADD LOGFILE MEMBER". The correct syntax to add a member to a redo log file group is "ADD LOGFILE MEMBER".
Option D) ALTER DATABASE ADD LOGFILE ‘/logs/redo22.log’;
This option is incorrect because it does not specify the group to which the redo log file should be added. The correct syntax to add a member to a redo log file group requires specifying the group number.
The correct answer is Option B) ALTER DATABASE ADD LOGFILE MEMBER ‘/logs/redo22.log’ TO GROUP 2. This option is correct because it uses the correct syntax to add a member to the redo log file group 2.