Correct transaction management. cf. bug https://openrdf.atlassian.net/browse/SES-2295 and tomcat default management of PUT request with form data (application/x-www-form-urlencoded encoded)
# The Fastcgi Apache module configuration file is being
# managed by Puppet and changes will be overwritten.
<IfModule mod_fastcgi.c>
AddHandler fastcgi-script .fcgi
FastCgiIpcDir "<%= @fastcgi_lib_path %>"
</IfModule>