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forum_thread

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. ... <enhancement agent = "false" reflection = "warning" /> <cache ref = "weak" level2 = "0" ...

 
release

2.4.6

... Changed logging of incomplete recovery records from WARNING to TRACE  ( issue #88 ). Changed main ...

 
release

2.4.7

... Changed logging of incomplete recovery records from WARNING to TRACE  ( issue #88 ). Changed main ...

 
forum_thread

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: ... 00:52 See also the warning (regarding using enum types)  in the manual . ...

 
forum_thread

locks on pure query activities

analyzing the dynamic behavior we can see from the thread dump that a lot of our threads that are just doing simple queries show locks like these (question is: why there are locks and how could we get rid of that):   log1:   ... <enhancement agent = "false" reflection = "warning" /> <cache ref = "weak" level2 = "4096mb" ...

 
release

2.4.5

... Changed logging of incomplete recovery records from WARNING to TRACE  ( issue #88 ). Changed main ...

 
forum_thread

500Mb ObjectDb database opening issue

Hi, I have observed that 500 Mb objectDb database opening time is very slow (~3 seconds) for following code m_EntityMgrFactory = Persistence.createEntityManagerFactory( "objectdb:" + aFilename ); m_EntityManager = m_EntityMgrFactory.createEntityManager(); Does exist any way to speed-up open time for big databases? Definitely, it's too long for 500 Mb database! ... <enhancement agent="false" reflection="warning" />   <cache ref="weak" level2="64mb" />   ... <enhancement agent="false" reflection="warning" />   <cache ref="weak" level2="64mb" />   ...

 
forum_thread

Insertion Speed Rate and Batch Load

1. I got about 10K inserts / second, is it normal? I would expect more than that, like close to 100K/second. I can definitely do 80K inserts/seconds on Oracle with batch insert on table with one primary key. 2. Is batch update/insert operation supported? I attached the files. ... <enhancement agent = "true" reflection = "warning" /> <cache ref = "weak" level2 = "0" ...

 
forum_thread

Out of memory

Hi, Today in the middle of the night ODB just crashed leaving this on console screen: ... <enhancement agent = "false" reflection = "warning" /> <cache ref = "weak" level2 ...

 
forum_thread

The server cannot start in CentOS

Hi, I try to run ObjectDB from Linux, but failed. My command is: java -cp objectdb.jar com.objectdb.Server start The result is attached. After typing the command, the system seems halting. ... <enhancement agent = "true" reflection = "warning" /> <cache ref = "weak" level2 = "0" ...