Chapter 8. Administering Berkeley DB Java Edition Applications
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## Chapter 8. Administering Berkeley DB Java Edition Applications

There are a series of tools and parameters of interest to the administrator of a Berkeley DB Java Edition database. These tools and parameters are useful for tuning your JE database's behavior once it is in a production setting, and they are described here. This chapter, however, does not describe backing up and restoring your JE databases. See Backing up and Restoring Berkeley DB Java Edition Applications for information on how to perform those procedures.

## The JE Properties File

JE applications can be controlled through a Java properties file. This file must be placed in your environment home directory and it must be named `je.properties`.

The parameters set in this file take precedence over the configuration behavior coded into the JE application by your application developers.

Usually you will use this file to control the behavior of JE's background threads, and to control the size of your in-memory cache. These topics, and the properties parameters related to them, are described in this chapter. Beyond the properties described here, there are other properties identified throughout this manual that may be of interest to you. However, the definitive identification of all the property parameters available to you is in the sample `example.properties` located in the directory where your JE distribution was unpacked.

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