Which two statements are true about the default configuration for automatic database backups? Archive redo log files are backed up every 30 minutes. The retention period is set at 14 days. Backups are executed in the primary site. Backups occur weekly.

Without specific context or reference to a particular database system, it's challenging to definitively answer this question. However, generally speaking:

1. "Archive redo log files are backed up every 30 minutes." - This statement could be true or false depending on the specific configuration of the database system. Some systems may be set to backup every 30 minutes, while others may have a different schedule.

2. "The retention period is set at 14 days." - This statement could also be true or false depending on the specific configuration of the database system. A 14-day retention period is common, but the actual period can be set to any length of time.

3. "Backups are executed in the primary site." - This statement is typically true. Backups are usually executed in the primary site to ensure data integrity and availability. However, backups can also be configured to run on secondary or backup sites.

4. "Backups occur weekly." - This statement could be true or false depending on the specific configuration of the database system. Weekly backups are common, but the actual schedule can vary.

In conclusion, without specific context or reference to a particular database system, it's impossible to definitively say which two statements are true. The truth of these statements depends on the specific configuration of the database system in question.