To set the maximum heap size when starting VoltDB, define the environment variable VOLTDB_HEAPMAX as an integer value (in megabytes) before issuing the voltdbcommand. For example, the following commands start VoltDB with a 3 gigabyte heap size (the default is 2 gigabytes):ui
$ export VOLTDB_HEAPMAX="3072" $ voltdb create -d deployment.xml -H serverA