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3

OutofMemory error with Object DB 2.0

The application works fine with only 256MB heap size with objectdb 1.0  But on 2.0 even with max heap size ... " /> max="8mb" stdout="false" stderr="false" /> max="128mb" />
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3

Performance tuning, best practices

processor cores.  What is strange for us is that max 20% of the cpu resources are used and the IO subsystem ... path="$objectdb/log/" max="8mb" stdout="false" stderr="false" />     max="128mb
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3

Queries are slow on a large database

to get the object with the highest Id. I tried a query like "count(this.Id)" or "max(this.Id)" but I ... query, with very fast execution time. Similarly to get MAX/MIN values: SELECT MAX(m.id) FROM MessageImpl m or in JDOQL (with a single query string): SELECT MAX(id) FROM MessageImpl If the field
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3

significant performance decrease

" user="true" password="true" /> max="8mb" stdout="false" stderr="false ... ="true" sync="false" path="." max="128mb" /> max-threads="10
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2

Connection is closed Caused by: java.io.EOFException

="$objectdb/log/" max="8mb" stdout="false" stderr="false" /> max="128mb ... " /> max-threads="10" />
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2

Degrading performance overtime

/" max="8mb" stdout="false" stderr="false" /> max="128mb ... " /> max-threads="10" />
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2

First query takes 4+ minutes to complete

-history size="50" user="true" password="true" /> max="8mb" stdout="false ... " /> max="512mb" /> max-threads="10" />
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2

JBOSS AS7 7.1.1 - Entity not persisted and createNamedQuery fire exception

mode="NON_XA"/>                     max-entries="10000"/>                     max-idle="100000"/>                                 max-entries="10000"/>                     max-idle="100000
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2

locks on pure query activities

" password="true" /> max="8mb" stdout="false" stderr="false" /> max="128mb" /> max-threads="48" />
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2

Out of memory

" /> max="8mb" stdout="false" stderr="false ... ="256kb" page="2kb" /> max="128mb ... " /> max-threads="64