About memory

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Custom Classloader: Issues with the Enhancer Agent

my call to defineClass(), makes the enhancement to the class and loads the modified version in memory ... the modified version in memory first. Not exactly. The enhancer loads the class before enhancement, as
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database optimization

, on the same set of objects.       Memory management in Java is a complex topic and in some cases smaller cache might be slightly more efficient because keeping objects in memory for longer time has some
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Database(*.odb) file size on disk

memory always used by new entities? -Will be the database file automatically reduced?   We have created a small test, in which we create and delete entities. It looks like that the released memory
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find repeated records by JPQL

an OutOfMemoryError while trying to load all the entity objects into a memory data structure is expected ... minutes and memory crash! So is there existing solutions to clean the repeated records? I
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First query takes 4+ minutes to complete

memory is available but never used (no swapping occurs).   POJO We store object of a single class in ... ,  and sorting them in memory in order to pick the first 50 that will be returned. With the suggested
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GC overhead limit exceeded

I had some memory problems with a process running over the weekend and received the following exceptions in the objectdb log: 1) [ObjectDB 2.3.2_04] Unexpected exception (Error 990) Generated by ... a result of heavy memory usage. Read about a configuration change that may help in this forum thread. felixobjectdb
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huge heap usage

we are using objectdb 2.7.2_6. At a custumer we have huge problems with the memory consumption (see the heap dump attached). The database size is pretty small (1.4 GByte). Any idea ... that keep these objects in memory (particularly roots and paths that keep your entity objects and ObjectDB's
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InternalException when using MEMBER OF on a large list in a query

we can represent the Key (UUID) most efficient? Both in terms of memory usage of the database files, memory
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Is 2 level cache in use?

performance. ODB on server uses the same amount of CPU and memory. I'm calling the same url in benchmark ... the L2 cache may slow the application because of the overhead in keeping it up to date and the memory
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Iterating over large result set

Hi, Few days ago I was writing some code to iterate over quite a large dataset. Fitting those data in memory was quite a challenge even with 3GB heap space. So I did paging using two loops ... memory. You may be able to replace the loop of paging queries with one query by running the query