These are the release notes for ExtremeTransactions 3.9.29
Removed unnecessary synchronisation overhead to optimize performance.
IMPORTANT: this release is a highly recommended fix for your installation if you are using release 3.7.8 or later. If you don't upgrade then you risk losing part of the transaction.
During an earlier fix for case 102827 in release 3.7.8 (connection leak for errors during XAResource.end), we disabled throwing exceptions originating from XAResource.end, assuming that XAResource.prepare would subsequently refuse to prepare or commit the Xid in question. It turns out that there was a problem with this assumption and the way it was implemented in the code, which caused this issue. This has been fixed, and of course we've added a test to prevent future regression.
There was a bug in removing obsolete sessions, caused by incompatibility of the equals method and dynamic proxies. This has now been fixed.
initConnectionSql. When set, the connection pool will trigger the specified SQL when a new connection is added to the pool.