Thanks. Makes sense. On Mar 6, 3:04 am, Thomas Mueller <thomas.tom.muel...@gmail.com> wrote: > Hi, > > > we are getting explicit System.gc() 's about every 1 - 2 hours > > I don't think this is because of H2. > > > When running the database in process we are getting explicit > > System.gc() 's about every 1 - 2 hours. > > By default, H2 doesn't use memory mapped files. Memory mapped files are only > used if you use the nioMapped file > system:http://h2database.com/html/advanced.html#file_system, meaning if the > database URL starts with jdbc:h2:nioMapped: or similar. > > System.gc() is also called when using LOCK_MODE=2 (if a table is locked for > a longer time, System.gc is called to close forgotten connections), or when > deleting or renaming a file fails (which can happen on Windows, if the file > is still open). But those are all special cases. > > Regards, > Thomas
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