Overview

The JADE Object Manager enables you to:

• Use system instrumentation and diagnosis methods in your JADE applications to examine your JADE system, nodes, or processes. These methods, which are summarized in the following subsection, are used by the JADE Monitor and when node sampling.

  For details about using the JADE Monitor to monitor and examine your JADE environment, see the JADE Monitor User’s Guide. For details about using the Web services JADE Monitor, see "Monitoring Your Web Sessions", in Chapter 2 of the JADE Web Application Guide.

• Sample JADE node activities and gather extensive details and statistics in addition to those provided by the statistics windows in the JADE Monitor or by calling the System class getStatistics or getStatistics64 method. For details, see "Node Sampling", later in this chapter.

  You can use the JADE Monitor to analyze the contents of your node sampling files.

Returned method values include cumulative counters that do not get reset during the lifetime of the node. To work out the value differences, JADE applications that use a method that retrieves statistical information need to compare values from one call to the next.

Cumulative values are held as unsigned 64-bit Integer values, and are copied to the dynamic object as Integer64 values. Although unlikely, you should be aware that the cumulative values can overflow to negative values. The maximum value before cumulative values overflow to a negative value is 2^63 – 1 (approximately 8 Exabytes).