>People have made similar observations in the past, but we've never >identified a clear reproducible case
Is there some information that would help you guys solve this problem? I have a thread dump of the issue, and a heap dump. However, I can't give them to you, because of confidentiality concerns. I would be happy to look through them with someone. Also, do you think updating to the latest version of derby may help? I am using 10.6.2000001.999685 as an embedded server. GC -- View this message in context: http://apache-database.10148.n7.nabble.com/What-creates-rawStoreDaemon-threads-in-embedded-derby-db-tp145096p145120.html Sent from the Apache Derby Users mailing list archive at Nabble.com.