The log file for errors, warnings, and informational messages is instance-path/logs/errors. All messages go to the same log so you can easily determine the order in which events occurred.
As shown in this example, messages consist of a timestamp, followed by an identifier, followed by the other information in the log message. Note that this log message is broken for the printed page.
[02/Jan/2006:16:54:57 +0100] - INFORMATION - start_tls - conn=-1 op=-1 msgId=-1 - Start TLS extended operation request confirmed. |
Use the identifiers to filter what you do not need.