Apache Derby is a sub-project of the Apache DB project. Derby is a pure Java relational database engine which conforms to the ISO/ANSI SQL and JDBC standards. Derby aims to be easy for developers and end-users to work with.
Derby 10.15.2.0 contains bug and documentation fixes and it can be obtained from the Derby download site:
http://db.apache.org/derby/derby_downloads.html. Please try out this new release.