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Mismatch client-server protocol prefix

Hello! We migrated one of our legacy webservices to Spring Boot/Spring MVC. Now i have a strange problem. At first the app runs perfectly for a couple of hours. After that it stops working and I get the following exception: ... diagnosis. It is definitely weird. Maybe it is a conflict between embedded Tomcat / new Spring and ObjectDB. ...

 
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Occasionally slow requests in load testing

We are running load testing against objectdb version 2.3.7_18. The performance is generally OK, however there are quite a few "spikes" in the performance where we are getting a lot of very slow response times from the DB, around 10 - 15 seconds. Looking at the DB server process with AppDynamics we can see that most of the requests get stuck in one of 2 places: com.objectdb.o.PGC:w: line number 232 com.objectdb.o.LFL:U: line number 1068 Please see the attached callgraph examples for full stack trace examples. ... compare it to Tomcat. In ObjectDB sharing of resources between the working threads (e.g. database pages) is much more extensive so ...

 
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newbie - lots of exeptions

Hi  I'm very new to objectdb . I have bought a server and really want to use it. Our code works well with eclipselink and postgresql - until we stress it which is why I'm trying to get objected to work.   realy wierd things are going on ... we are using hessian to connect our remote clients to glass fish and invoke methods there (fine with postgresql) . here is our log (part of it at least .... exceptions are happening all the time when we're working with objected). ... the problem with build 16. There is no known difference between build 6 and 16 that may cause this exception. If this ...

 
issue

Blocked by find

I have a container object which wraps an objectdb database. There is a "putIfAbsent(String id, Object obj)" method which is synchronized and attempts to load an object by id using the EntityManager "find" method. If nothing is returned from the db the passed object is persisted to the db. I have 5 threads which use this method. In a run today one of the threads seems to have got stuck somewhere in the find. The thread dump looks like: ... hit similar problems. See attached test - you can switch between delete statements and find/remove by commenting/uncommenting the ...

 
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Error using query with MAX() function

I have a class that is persisting a Entity that holds remarks and a time. Then when I query for the latest remark I get a internal error when the remark is larger than 1966 chars. Here is a test class and entity that reproduces the problem on my system. ... There seems to be a link between how often I commit and the results of success or failure. If I ...

 
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Modifying something with Explorer -> app JPQL with Enum doesn't work anymore

Hi! Scenario: Copy attached DB into localhost ObjectDB server (I'm running 2.5.1_03). Open attached project JavaEE Maven with NetBeans (7.4 beta in my case). Start ObjectDB on localhost as server. Run project on Apache Tomee 1.5.2 standard. Take a look at NetBeans' output to see how many entities are found with field type GOOD. There are 2 ways generate the bug: ... was affected because enum query arguments have been passed between the client and the server using their ordinal representation rather ...

 
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Performance problem

Hi, we have a strange performance problem with ObjectDB 2.5.3_01 and JBoss 7.1.1. We have two ObjectDB databases on one ObjectDB server. Production database is running 5-10 times slower than test database. Their size and number of records are almost identical. When running production database in separate test environment its speed is very good. We did a performance analysis on our 2 linux servers one running JBOSS and other running ObjectDB. - CPU utilization of JBOSS server is max 5-10% (per core)... mentioned are not the problem, we have two  relation between class USER and class MESSAGES, one from USER to MESSAGES other from ...

 
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Unexpected internal exception during set field of an Embeddable to null

Hello, we get an Unexpected internal exception and have no idea what goes wrong. We can reproduce (mostly) the error in a very big use case. In the big use case and we create and persist millions of SignalValueImpl objects (Embeddables). Partly as in the stack trace an Embeddable contain another Embeddable. It seems like that we can't reproduce the problem in smaller use cases with less objects. Stack trace: ... to build a test case that reflects the same relationships between your objects as in your application, bur for that we will need more ...

 
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Problem with distinct select, order by and equivalent alias/attribute path

Hi, while working with a (standard-)JPA-query generating framework we run into an exception when ordering the results of some projection when the order by expression is different (though logically equivalent) to the projection expression. Here is the example: ... real sense to me switching from alias to attribute path between projection and order by part... ...

 
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Index causes increased memory usage

Hello, ... the biggest memory user was byte arrays - usually hitting between 75-90% of the memory in use .  Is this normal? ...