How to Load the Persistence Service XML Configuration

Persistence Service loads its XML configuration from multiple locations. This section presents the various approaches, listed in load order.

The first three locations only contain QoS Profiles and are inherited from Connext DDS (see Configuring QoS with XML).

• $NDDSHOME/resource/xml/NDDS_QOS_PROFILES.xml

This file contains the DDS default QoS values; it is loaded automatically if it exists. (First to be loaded.)

• File specified in the NDDS_QOS_PROFILES Environment Variable

The files (or XML strings) separated by semicolons referenced in this environment variable are loaded automatically.

• <working directory>/USER_QOS_PROFILES.xml

This file is loaded automatically if it exists.

The next locations are specific to Persistence Service.

• <NDDSHOME>/resource/xml/RTI_PERSISTENCE_SERVICE.xml

This file contains the default Persistence Service configurations; it is loaded if it exists. There are two default configurations: default and defaultDisk. The default configuration persists all the topics into memory. The defaultDisk configuration persists all the topics into files located in the current working directory.

• <working directory>/USER_PERSISTENCE_SERVICE.xml

This file is loaded automatically if it exists.

• File specified using the command line option, -cfgFile

The command-line option -cfgFile (see Persistence Service Command-Line Options) can be used to specify a configuration file.

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