UCM Search Cache Turned Off in UCM PS3 (18.104.22.168.0)
By Kevin Smith-Oracle on Mar 16, 2011
I just recently found this problem at a customer. There is a bug in the PS3 (22.214.171.124.0) release of UCM that leaves the search cache turned off by default.
I had the searchcache and searchquery trace sections enabled to examine the queries coming to UCM and saw there were no searchcache statements in the trace output. I set UseSearchCache=true in config.cfg and viola the search cache was turned on.
I have confirmed with Oracle Support that this is known bug. I have not seen any patches available for PS3 yet. For now just make sure that for any PS3 installs you set UseSearchCache=true in config.cfg to make sure the search cache is turned on.
In my case this was a fresh install of PS3. I would also expect, although I have not tested it, that this would also occur on instances that were upgraded to PS3 from an earlier release. So, just set UseSearchCache=true to be safe.