Transaction Service Statistics; Jvm Statistics; Jvm Statistics For Java Se- Class Loading - Sun Microsystems GlassFish Enterprise Server 2.1 Administration Manual

Transaction Service Statistics

TABLE 18–15
Statistic Data Type
CountStatistic
committedcount
CountStatistic
rolledbackcount
StringStatistic
state
Java Virtual Machine (JVM) Statistics
The JVM has monitorable attributes that are always enabled. The statistics available for the
JVM are shown in the following table.

JVM Statistics

TABLE 18–16
Statistic Data Type
BoundedRangeStatistic
heapsize
CountStatistic
uptime
JVM Statistics in Java SE
With Java SE, additional monitoring information can be obtained from the JVM. Set the
monitoring level to LOW to enable the display of this additional information. Set the
monitoring level to HIGH to also view information pertaining to each live thread in the system.
More information on the additional monitoring features for Java SE is available in a document
titled Monitoring and Management for the Java Platform, which is available from
http://java.sun.com/javase/6/docs/technotes/guides/management/.
The Java SE monitoring tools are discussed at
http://java.sun.com/javase/6/docs/technotes/tools/#manage.
The statistics available for class loading in the JVM in Java SE are shown in the following table.

JVM Statistics for Java SE- Class Loading

TABLE 18–17
Statistic
loadedclasscount
Chapter 18 • Monitoring Components and Services
(Continued)
Description
Number of transactions that have been
committed.
Number of transactions that have been
rolled back.
Indicates whether or not the transaction
has been frozen.
Description
The resident memory footprint with the
higher and lower bounds of the JVM's
memory heap size.
The amount of time the JVM has been
running.
Data Type Description
CountStatistic Number of classes that are currently
loaded in the JVM.
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