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Index causes increased memory usage

? Are they cached in any way? Here's a bit about our environment: OS is 64-bit Linux Java 7 ObjectDB version 2.37_22. Thanks in advance. cvtsc Dev Team There is no special cache for indexes. Pages that contain indexes are cached in the page cache, exactly as pages that contain data. Try analyzing a heap

In memory processing for ObjectDB

Transaction per second limit and making sure if ObjectDB can help us here. Additionally the only cache I see in settings is query cache, is it only that query result sets are cached or I can actually have a all of my Objects in Cache ? We can run the embeeded mode for perfomance, or embeeded + in memory

How to Use a SF with extended Persistence Context?

-as-ejb3-7.1.1.Final.jar:7.1.1.Final] at org.jboss.as.ejb3.cache.TransactionAwareObjectFactory ... .jboss.as.ejb3.cache.impl.backing.NonPassivatingBackingCacheImpl.create(NonPassivatingBackingCacheImpl.java:97) [jboss-as-ejb3-7.1.1.Final.jar:7.1.1.Final] at org.jboss.as.ejb3.cache.impl.backing

Out of memory

with sharing page cache? lwalkowski Lukasz Walkowski Could you please provide more details about the byte ... consumption. Currently it seems that most of the heap space is in use for various caching activities ... the ObjectDB configuration file (to show cache sizes, etc.). support Support I just uploaded


Enum Constant javax.persistence.CacheStoreMode REFRESH Insert/update entity data into cache when read from database and when committed into database. Forces refresh of cache for items read from database. Since: JPA 2.0


Enum Constant javax.persistence.CacheStoreMode USE Insert/update entity data into cache when read from database and when committed into database: this is the default behavior. Does not force refresh of already cached items when reading from database. Since: JPA 2.0

Blocked by find

the page cache when it becomes too loaded, but the reason for this exception is unclear. support ... in purging pages from the cache, i.e. #1 and #3 indeed reflect the same problem. "ODB-FileWriter ... that somehow a list of cached pages contains a circle since there are no other apparent reasons


Method javax.jdo.identity.SingleFieldIdentity int hashCode() Return the cached hash code. Returns: the cached hash code. Since: JDO 1.0


" and "property". Since: JDO 2.1 String cacheable Whether this field/property is cacheable in a Level2 cache. Whether this field/property is cacheable in a Level2 cache. Default value: "true" Since: JDO 2.2


control should be used for the current transaction, whether instances may hold values in the cache outside transactions, and whether values should be retained in the cache after transaction completion

Getting Started

ObjectDB is very easy to use. Follow the Getting Started Tutorial and the Quick Tour manual chapter and in minutes you may be able to write and run first Java programs against ObjectDB.

Prior knowledge or experience in database programming (SQL, JDBC, ORM, JPA, etc.) is not required, but some background in using the Java language is essential.

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