JVM File Descriptors Test

This test reports useful statistics pertaining to file descriptors.

Target of the test : An Oracle 9i Application Server

Agent deploying the test : An internal/remote agent

Outputs of the test : One set of results for the Java application being monitored.

Configurable parameters for the test
Parameter Description

Test Period

How often should the test be executed.


The IP address of the host for which this test is to be configured.


Refers to the port at which the specified host listens to.

JMX Remote Port

Here, specify the port at which the JMX listens for requests from remote hosts. Ensure that you specify the same port that you configured in the management.properties file in the <JAVA_Home>\jre\lib\management folder used by the target application (refer to the Java Applications Monitoring Model for details).

User, Password,
and Confirm Password

If JMX requires authentication only (but no security), then ensure that the User and Password parameters are configured with the credentials of a user with read-write access to JMX. To know how to create this user, refer to the Java Applications Monitoring Model. Confirm the password by retyping it in the Confirm Password text box.


This parameter appears only if the Mode is set to JMX. The JNDIName is a lookup name for connecting to the JMX connector. By default, this is jmxrmi. If you have registered the JMX connector in the RMI registery using a different lookup name, then you can change this default value to reflect the same. 


This parameter appears only if the Mode is set to JMX. This test uses a JMX Provider to access the MBean attributes of the target Java application and collect metrics. Specify the package name of this JMX Provider here. By default, this is set to com.sun.jmx.remote.protocol.


Specify the duration (in seconds) for which this test should wait for a response from the target Java application. If there is no response from the target beyond the configured duration, the test will timeout. By default, this is set to 240 seconds.

Measurements made by the test
Measurement Description Measurement Unit Interpretation

Open file descriptors in JVM

Indicates the number of file descriptors currently open for the application.



Maximum file descriptors in JVM

Indicates the maximum number of file descriptors allowed for the application.



File descriptor usage by JVM

Indicates the file descriptor usage in percentage.