Your AccuRev infrastructure, server and clients are behind a firewall and a proxy is needed to get to the internet.
Use the environment variable "_JAVA_OPTIONS". (Yes the leading underscore is needed)
For the following shells:
export _JAVA_OPTIONS='-Dhttp.proxyHost=www.yourCompanyProxy.com -Dhttp.proxyPort=8123'
CSH and variants
setenv _JAVA_OPTIONS '-Dhttp.proxyHost=www.yourCompanyProxy.com -Dhttp.proxyPort=8123'
set _JAVA_OPTIONS="-Dhttp.proxyHost=www.yourCompanyProxy.com -Dhttp.proxyPort=8123"
Be sure to substitute the correct names for the proxy and port, changing both yourCompanyProxy and 8123 as appropriate for your location / site.