The default SOA heap size setting for 64-bit JRockit JVM is-Xms768m -Xmx1536m. You can increase the SOA heap size as needed for large installations. For example, to set both the initial and maximum SOA heap size to 2 GB, open the MIDDLEWARE_HOME/user_projects/domains/EPMSystem/bin/setSOADomainEnv.cmd file with a text editor, and set PORT_MEM_ARGS=-Xms2048m -Xmx2048m -XXcompressedRefs:size=32GB.