Understanding WebLogic Logging Services 2-11
WebLogic Server subsystems generate many messages of lower severity and fewer messages of higher severity. For example, under normal circumstances, they generate
many INFO messages and no EMERGENCY messages.
If your application uses WebLogic logging services, it can use an additional severity level, DEBUG. See Writing Debug Messages in Using Logging Services for Application
Logging for Oracle WebLogic Server.
2.7 Viewing WebLogic Server Logs
The WebLogic Server Administration Console provides a log viewer for all the log files in a domain. The log viewer can find and display the messages based on any of
the following message attributes: date, subsystem, severity, machine, server, thread, user ID, transaction ID, context ID, timestamp, message ID, or message. It can also
display messages as they are logged or search for past log messages. See
Figure 2–3 .
DEBUG A debug message was generated.
INFO Used for reporting normal operations; a low-level informational message.
NOTICE An informational message with a higher level of importance.
WARNING A suspicious operation or configuration has occurred but it might not affect
normal operation. ERROR
A user error has occurred. The system or application can handle the error with no interruption and limited degradation of service.
CRITICAL A system or service error has occurred. The system can recover but there
might be a momentary loss or permanent degradation of service. ALERT
A particular service is in an unusable state while other parts of the system continue to function. Automatic recovery is not possible; the immediate
attention of the administrator is needed to resolve the problem. EMERGENCY The server is in an unusable state. This severity indicates a severe system
failure or panic.
Table 2–2 Cont. Message Severity
Severity Meaning
2-12 Configuring Log Files and Filtering Log Messages for Oracle WebLogic Server
Figure 2–3 Log Viewer
For information about viewing, configuring, and searching message logs, see the following topics in the Oracle WebLogic Server Administration Console Help:
■
View and configure logs
■
View server logs
■
View the domain log For a detailed description of log messages in WebLogic Server message catalogs, see
Oracle Fusion Middleware Oracle WebLogic Server Message Catalog. This index of messages describes all of the messages emitted by WebLogic subsystems and provides
a detailed description of the error, a possible cause, and a recommended action to avoid or fix the error. To view available details, click on the appropriate entry in the
Range column if viewing by range or the Subsystem column if viewing by subsystem.
2.8 Server Logging Bridge
