About space

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3

Shrinking Database Files

never shrinks when large number of objects are deleted and the only way to reclaim that space would be with Database Doctor. Is there a way to reclaim database file space? Is it worth trying to reclaim space?  (It may not be if it is a lengthy operation, or it tends to make the file more fragmented
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3

Inserted entities with strings as keys and indices needs more and more ram memory in comparing to primitive integers as keys and indices

of that type in the database increases. Less space is wasted in database when the storing objects ... less  space than String UID and are processed faster. Thank you for the clarification. The example with long ... (due to using UID primary key) will  take less space. Use flush during large transactions with temp file
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2

Database size is much larger than expected (x2)

transaction: Java heap space (error 613)         at com.objectdb.jpa.EMImpl.commit(EMImpl.java:277 ... :123) Caused by: java.lang.OutOfMemoryError: Java heap space         at com.objectdb.o.BYW.r(BYW.java ... by: java.lang.OutOfMemoryError: Java heap space at com.objectdb.o.OBH.c(OBH.java:150) at com
Forum
2

Doctor - high memory usage

to set heap space to at least 450MB. Even then whole process takes ages. Optimal setting ... , but it might become even slower.     Not working - still need about 450MB of heap space to only scan database file. Since new ... ..............................java.lang.OutOfMemoryError: Java heap space at com.objectdb.o.VLV.p(VLV.java:270) at com.objectdb.o
Issue
2

GC overhead limit exceeded

.InternalException: java.lang.OutOfMemoryError: Java heap space java.lang.OutOfMemoryError: Java heap space ... the process failed to produce a heap dump as the server was running out of disk space at the time so feel
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2

in-memory and on-disk support?

at least run defragmentation before allocating this space. Getting a continuous unfragmented disk space is the main advantage. Eliminating the need for space allocation later is a small additional
Issue
2

out of memory error

have sufficient heap space then it may throw an OutOfMemoryError (sometimes the error message is "GC overhead limit exceeded", but usually it still indicates a shortage in heap space). Increasing ... to overcome heap space shortage automatically, but unfortunately currently an OutOfMemoryError is possible. hgzwicker
Issue
2

[ObjectDB 2.5.6_05] Unexpected exception (Error 990)

/new com.objectdb.o.InternalException: java.lang.OutOfMemoryError: Java heap space java.lang.OutOfMemoryError: Java heap space at com.objectdb.o.PAG.(PAG.java:175) at com.objectdb.o.PGC.x(PGC ... space. Please try to increase the size of the JVM heap or change the configuration to use less heap size. jastorga
Issue
2

Best practise loading big data

databases. Use this thread if loading big data consumes memory space that is not released by ObjectDB ... caches do not use weak references and therefore may use the allocated space for unlimited time ... it may be essential to micro optimise space. For example in your last test case large amount of memory is used by
Forum
2

Compress ODB file with XML content

and not for minimum storage space, but compression ratio of 1:50 does look extreme. Compression ... database file. Most of the database space is used by field value in entity class LogVolatileEntityImpl