Leak Suspects

One instance of "com.objectdb.o.MST" loaded by "sun.misc.Launcher$AppClassLoader @ 0x853f0440" occupies 375,301,672 (17.92%) bytes. The memory is accumulated in one instance of "com.objectdb.o.MST" loaded by "sun.misc.Launcher$AppClassLoader @ 0x853f0440".

Keywords
com.objectdb.o.MST
sun.misc.Launcher$AppClassLoader @ 0x853f0440

598,700 instances of "com.objectdb.o.PAG", loaded by "sun.misc.Launcher$AppClassLoader @ 0x853f0440" occupy 1,436,097,296 (68.58%) bytes. These instances are referenced from one instance of "com.objectdb.o.PAG[]", loaded by "sun.misc.Launcher$AppClassLoader @ 0x853f0440"

Keywords
com.objectdb.o.PAG[]
sun.misc.Launcher$AppClassLoader @ 0x853f0440
com.objectdb.o.PAG

The problem suspects 1 and 2 may be related, because the reference chains to them have a common beginning.