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Servers: Logging: General

Configuration Options     Advanced Configuration Options     Related Tasks     Related Topics

Use this page to define the general logging settings for this server.

In addition, you can use this page to specify the types of messages that the server sends to standard out.

The server message log does not contain HTTP requests, JMS messages, or JTA transaction messages. Instead, you can configure separate log files for those requests and messages.

In addition to maintaining its local message log, by default, each server forwards all messages of severity NOTICE and higher to the domain log.

Debug Messages

If you create applications to run on WebLogic Server, you can configure your applications to generate messages of severity DEBUG. These messages are never forwarded to the domain log and are intended to contain detailed information about the operation of an application or the server.

Configuration Options

Name	Description
Log file name	The name of the file that stores current log messages. Usually it is a computed value based on the name of the parent of this MBean. For example, for a server log, it is serverName.log. However, if the name of the parent cannot be obtained, the file name is weblogic.log. If you specify a relative pathname, it is interpreted as relative to the server's root directory. To include a time and date stamp in the file name when the log file is rotated, add java.text.SimpleDateFormat variables to the file name. Surround each variable with percentage (%) characters. For example, if the file name is defined to be myserver_%yyyy%_%MM%_%dd%_%hh%_%mm%.log, the log file will be named myserver_yyyy_mm_dd_hh_mm.log. When the log file is rotated, the rotated file name contains the date stamp. For example, if the log file is rotated on 2 April, 2003 at 10:05 AM, the log file that contains the old messages will be named myserver_2003_04_02_10_05.log. If you do not include a time and date stamp, the rotated log files are numbered in order of creation. For example, myserver.log00007. MBean Attribute: LogMBean.FileName Changes take effect after you redeploy the module or restart the server.
Rotation type	Criteria for moving old log messages to a separate file. NONE Messages accumulate in a single file. You must erase the contents of the file when the size is too large. Note that WebLogic Server sets a threshold size limit of 500 MB before it forces a hard rotation to prevent excessive log file growth. SIZE When the log file reaches the size that you specify in FileMinSize, the server renames the file as FileName.n. TIME At each time interval that you specify in TimeSpan, the server renames the file as FileName.n. After the server renames a file, subsequent messages accumulate in a new file with the name that you specified in FileName. MBean Attribute: LogMBean.RotationType Secure value: byTime Changes take effect after you redeploy the module or restart the server.
Rotation file size	The size (1 - 65535 kilobytes) that triggers the server to move log messages to a separate file. After the log file reaches the specified minimum size, the next time the server checks the file size, it will rename the current log file as FileName.n and create a new one to store subsequent messages. (Requires that you specify a file rotation type of Size.) MBean Attribute: LogMBean.FileMinSize Minimum value: 1 Maximum value: 65535
Begin rotation time	Determines the start time (hour and minute) for a time-based rotation sequence. At the time that this value specifies, the server renames the current log file. Thereafter, the server renames the log file at an interval that you specify in File Time Span. If the specified time has already past, the server rotates the log file at the next scheduled interval that you specify. Use the following format: k:mm, where k is the hour in a 24-hour format. mm is the minute MBean Attribute: LogMBean.RotationTime
Rotation interval	The interval (in hours) at which the server saves old log messages to another file. (Requires that you specify a file rotation type of TIME.) MBean Attribute: LogMBean.FileTimeSpan Minimum value: 1
Limit number of retained files	Indicates whether to limit the number of log files that this server instance creates to store old messages. (Requires that you specify a file rotation type of SIZE or TIME.) After the server reaches this limit, it deletes the oldest log file and creates a new log file with the latest suffix. If you do not enable this option, the server creates new files indefinitely and you must clean up these files as you require. MBean Attribute: LogMBean.NumberOfFilesLimited
Files to retain	The maximum number of log files that the server creates when it rotates the log. This number does not include the file that the server uses to store current messages. (Requires that you enable Number of Files Limited.) MBean Attribute: LogMBean.FileCount Minimum value: 1 Maximum value: 99999
Log file rotation directory	The directory where the rotated log files will be stored. By default the rotated files are stored in the same directory where the log file is stored. MBean Attribute: LogMBean.LogFileRotationDir Changes take effect after you redeploy the module or restart the server.
Rotate log file on startup	Specifies whether a server rotates its log file during its startup cycle. MBean Attribute: LogMBean.RotateLogOnStartup Changes take effect after you redeploy the module or restart the server.

Advanced Configuration Options

Name	Description
Logging implementation	Specifies whether the server logging is based on a Log4j implementation. By default, WebLogic logging uses an implementation based on the Java Logging APIs which are part of the JDK. Applications that use the WebLogic Message Catalog framework or the NonCatalogLogger will not be affected by the underlying Logging implementation. MBean Attribute: LogMBean.Log4jLoggingEnabled Changes take effect after you redeploy the module or restart the server.
Severity level	The minimum severity of log messages going to the server log file. By default all messages go to the log file. MBean Attribute: LogMBean.LogFileSeverity
Filter	The filter configuration for the server log file. A filter configuration defines simple filtering rules to limit the volume of log messages written to the log file. MBean Attribute: LogMBean.LogFileFilter
Redirect stdout logging enabled	When enabled, this redirects the stdout of the JVM in which a WebLogic Server instance runs, to the WebLogic logging system. The stdout content is published to all the registered log destinations, like the server terminal console and log file. MBean Attribute: LogMBean.RedirectStdoutToServerLogEnabled Changes take effect after you redeploy the module or restart the server.
Severity level	The minimum severity of log messages going to the standard out. Messages with a lower severity than the specified value will not be published to standard out. MBean Attribute: LogMBean.StdoutSeverity
Filter	The filter configuration for log events being sent to the standard out. MBean Attribute: LogMBean.StdoutFilter
Severity level	The minimum severity of log messages going to the domain log from this server's log broadcaster. Messages with a lower severity than the specified value will not be published to the domain log. MBean Attribute: LogMBean.DomainLogBroadcastSeverity
Filter	The filter configuration for log events being sent to the domain log. MBean Attribute: LogMBean.DomainLogBroadcastFilter
Buffer Size	Broadcasts log messages to the domain log in batch mode. The size of the buffer for log messages that are sent to the domain log. The buffer is maintained on the Managed Server and is broadcasted to the domain log when it is full. If you notice performance issues due to a high rate of log messages being generated, set this value higher. This will cause the buffer to be broadcasted less frequently from the Managed Server to the domain log. In production environments, it is not recommended to set the buffer size lower than the production default of 10. MBean Attribute: LogMBean.DomainLogBroadcasterBufferSize Minimum value: 1 Maximum value: 100
Severity level	The minimum severity of log messages going to the memory buffer of recent log events. Messages with a lower severity than the specified value will not be cached in the buffer. MBean Attribute: LogMBean.MemoryBufferSeverity
Filter	The filter configuration for messages that are stored in the log memory buffer. By default, all log messages are cached. MBean Attribute: LogMBean.MemoryBufferFilter
Minimum severity to log	The minimum severity of log messages going to all log destinations. By default all messages are published. MBean Attribute: CommonLogMBean.LoggerSeverity
Logger severity properties	The configuration of the different logger severities keyed by name. The values are one of the predefined Severity strings namely Emergency, Alert, Critical, Error, Warning, Notice, Info, Debug, Trace. MBean Attribute: CommonLogMBean.LoggerSeverityProperties

Related Tasks

• View and configure logs
• Change server log file name and location
• Specify messages for standard out
• Rotate log files
• Forward messages to the domain log
• Specify severity level for Loggers
• Filter log messages

Related Topics

• Understanding WebLogic Logging Services
• Writing Messages to the WebLogic Server Log
• Writing Debug Messages
• Specifying Severity Level for Loggers