https://community.oracle.com/thread/1776723?start=0&tstart=0
<context-param>
<param-name>org.apache.myfaces.trinidad.UPLOAD_MAX_DISK_SPACE</param-name>
<param-value>20480000</param-value>
</context-param>
<context-param>
<param-name>org.apache.myfaces.trinidad.UPLOAD_MAX_DISK_SPACE</param-name>
<param-value>20480000</param-value>
</context-param>