Jeremy Treague of Schreiber Foods discusses their experience upgrading their Oracle SOA Suite from version 11g Patch Set 5 to Patch Set 6 in October 2014. Key reasons for the upgrade were to use the new User Messaging Service adapter and align their SOA and ADF development efforts on a common version. The upgrade process took around 90 minutes and involved stopping services, backing up files and schemas, upgrading WebLogic Server, applying patches, upgrading schemas, and verifying services. Lessons learned include backing up data, paying close attention to post-patch procedures, and resolving issues like missing JMS queues. Future plans include upgrading the SOA database in 2015 and potentially moving to SOA 12c in 2016.