Log Configuration

Each broker has a single log configuration MBean, used for configuring Message Queue logging.

Object Name

The log configuration MBean has the following object name:

com.sun.messaging.jms.server:type=Log,subtype=Config

A string representing this object name is defined as a static constant LOG_CONFIG_MBEAN_NAME in the utility class MQObjectName.

Attributes

The log configuration MBean has the attributes shown in Table 3–84. The names of these attributes are defined as static constants in the utility class LogAttributes.

Table 3–84 Log Configuration Attributes

Name	Type	Settable?	Description
Level	String	Yes	Logging level  Specifies the categories of logging information that can be written to an output channel. See Table 3–85 for possible values.
RolloverBytes	Long	Yes	File length, in bytes, at which output rolls over to a new log file  A value of -1 denotes an unlimited number of bytes (no rollover based on file length).
RolloverSecs	Long	Yes	Age of file, in seconds, at which output rolls over to a new log file  A value of -1 denotes an unlimited number of seconds (no rollover based on file age).

Table 3–85 shows the possible values for the Level attribute. Each level includes those above it (for example, WARNING includes ERROR). These values are defined as static constants in the utility class LogLevel.

Table 3–85 Log Configuration Logging Levels

Name	Utility Constant	Meaning
NONE	LogLevel.NONE	No logging
ERROR	LogLevel.ERROR	Log error messages
WARNING	LogLevel.WARNING	Log warning messages
INFO	LogLevel.INFO	Log informational messages
UNKNOWN	LogLevel.UNKNOWN	Logging level unknown

Notification

The log configuration MBean supports the notification shown in Table 3–86.

Table 3–86 Log Configuration Notification

Name	Description
jmx.attribute.change	Attribute value changed