The log files record the system-level and application-level errors. Since the information you require are now stored in separate log files, it is easier to locate the problems, identify the nature of the problems and address them directly.
The following are the types of log files available:

• Access logs or the performance log- It maintains on a daily basis, a record of all who have visited your site. It even records the IP address of the machine from which your site has been accessed.
• DB verify.Log- This verifies your database schema
• Event-log.txt- It records on a daily basis the operations carried out in the zDE.
• Zcsite_error_log - If Apache is not started or sites are not running, it gets recorded in the error logs
• Zcsite_jserv.log - This shows whether a servlet is initialized or destroyed.