About configuration

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NullPointerException in ENH.g(ENH.java:401)

Hi, I experience a NullPointerException inside the objectdb code with the following stacktrace: ... this operation with a schema change declaration in the configuration file. Two different classes with a similar name exist in ...

 
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Several parallel threads to speed up query on one DB

Hi, I have an application: producer (from a DB) to a consumer. The current bottleneck is the producer from DB (based on a query) and I would like to speed it up. I have tried using several entity managers (same DB instance) to benefit from the parallelisation - but it looks like I don't get much benefit from doing that.  ... It may be possible to improve performance by tuning the configuration (e.g. the maximum concurrent threads ). ...

 
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Persist not working when ObjectDB and another db is used in the same application (through spring) with different tx managers

Hi,  Object are not being persisted when ObjectDB and another db is used in the same application (through spring) with different tx managers, please find an example of this below. Any help is greatly appreciate as we are currently evaluating ObjectDB to use in our new enterprise application and we need to decide if we are going to purchase it very soon. Many Thanks   Persistence.xml ... amend the ObjectDB persistence unit definition in Spring configuration, and specify the name of the persistence unit (you use a ...

 
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Negative snapshot user count exception

I found the following stack trace in my log files; it's cropped up a number of times: ... additional index problems; I resolved the memory configuration on Sunday night.  I re-ran the database doctor on Monday ...

 
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Difficulty with the BIRT plugin

Hi, am trying to get the BIRT plugin to work. Firstly: connecting to an odb server doesn't seem to work (incompatible versions) - but there isn't any way to find out what version the BIRT plugin is using. Next: connecting directly to a file datasource seems to work, in the sense that I can ping the database, however, there doesn't appear to be any way to create a new Data Set from the Data Explorer, as suggested in the online manual: ... The data path attribute in the server configuration. The path of the server's objectdb.jar ...

 
issue

Unable to stop server after starting in SSL mode

ObjectDB server starts & stops fine in non-SSL mode using start & stop shell scripts. ObjectDB server starts fine in SSL mode using start script but throws error and does not stop using stop shell script. Non-SSL mode server start/stop output: ObjectDB Server started on port 7032. ObjectDB Server stopped. SSL mode server start output: ObjectDB Server (SSL) started on port 7032. SSL mode server stop output: ... Note that SSL should be enabled also in the ObjectDB configuration that is used by the STOP command, and in that case ...

 
issue

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) ... as a result of heavy memory usage. Read about a configuration change that may help in this forum thread . ...

 
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Null returned by Persistence.createEntityManagerFactory

Hi, So I'm currently having an issue where createEntityManagerFactory returns null. When I run the application on the my local machine through Tomcat it works fine, the odb file is created.    ... I'm trying to figure out if there is some kind of configuration issue. Thanks, elks ...

 
issue

InternalException during producer/consumer scenario

Hi, I'm trying to use objectdb in a producer/consumer scenario. Producer threads put message objects into a table while consumer threads remove the objects based on age, priority, etc. There are 2 main motivations for using objectdb for this purpose rather than a queue or similar data structure: 1) The consumer can select the "next" object based on a range of potentially complex criteria. 2) The number of objects produced can be potentially exceed available memory so can be held on disk within the objectdb file. ... try setting the  max-threads attribute in your configuration to 0 ? 1000 ? If this doesn't affect - is it ...

 
issue

out of memory error

we had a system crash on GC overhead limit reached, these are the last logs: ... could solve the problem, or alternatively, tuning ObjectDB configuration to use less heap size. If the exception is thrown in ...