Niagara N4: Adjusting NRE Memory Pools - Java Heap

Error

Software Version: Niagara N4 4.0, 4.1, 4.2

Error Code: java.lang.OutOfMemoryError - Insufficient heap space

Solution

Default maximum heap size for Windows Supervisor station is 256MB which may be too small. To increase:

1. Open Workbench as administrator (right-click, Run as administrator)
2. Connect to local platform and view Platform Administration page
3. Note location of User Home for Niagara Daemon
4. Navigate to etc/nre.properties file under User Home
5. Open nre.properties in text editor
6. On line for station.java.options, modify -Xmx256M to custom value. Oracle recommends 1/4th of physical memory or 1GB (whichever is smaller)
7. Save and restart station