JDBC plugin and localLocking

[Rod Widdowson]

All out stress tests run with local locking on.  If there is no contention to the table except from your IdP them it should be a 100% fix.  If there is contention (like two IdPs sharing the table) then you may want to turn up the  transactional retry count as well.

All that local locking does is what the databases should be doing (locking the table against multiple insertions) but tend not to.