About users

forum_thread

Remove not working

Hello! We have a strange problem. ... including with ObjectDB (maybe less than 5% of the active users), you may find other minor issues (at the wrapper level, as the ObjectDB ...

 
forum_thread

PersistenceException: Failed to locate field

Hi, have recently been running into this issue when changing the schema: com.objectdb.o._PersistenceException: Failed to locate field in this case, adding a primitive String field to an Entity. pretty sure that in the past schema evolution would not have triggered errors, is this case, a simple new field, shouldn't the policy be to add a null in that field, or other default for that primitive. #1 2017-10-05 03:14 Hi, have recently been running into this issue when changing the schema: com.objectdb.o._PersistenceExcep ...

 
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. #1 2011-05-03 22:01 1. I got about 10K inserts / second, is it normal? I would expect more than that, like close to 100K/second. I ca ...

 
issue

Enhanced classes problem

Hell, we have problem with the OEM enhancement licencing. When we used runtime licencing using machine activation code, everything works fine. But when we enhanced our classes with OEM licence, following errors occurs: Bug Version: Priority: High Status: Fixed Replies: 13 Type:  Bug ...

 
forum_thread

java 8 LocalDateTime is not working in query

My entity class has a field of type java.time.LocalDateTime. I'm able to persist entities and I'm able to query without datetime field in where clause, but with datetime in where clause doesn't return anything and not exception.   #1 2014-08-25 00:19 My entity class has a field of type java.time.LocalDateTime. I'm able to persist entities and I'm able to ...

 
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. #1 2012-04-26 12:56 We are running load testing against objectdb version 2.3.7_18. The performance is generally OK, however there are ...

 
forum_thread

Eager Fetch is not stable for collection or map types?

Hi, thanks very much for your helpful software. The problem is the storage of collection or map types is not stable, we lost them sometimes after JVM restarted. Eager fetch is properly set.And we still found that the storage is stable when we not use generic, such as "private List users = new ArrayList();" instead of "private List<User> users = new ArrayList<User>();".   The code about entity and fetch is: ... is stable when we not use generic, such as "private List users = new ArrayList();" instead of "private List<User> users = new ArrayList<User>();".   The code about ...

 
forum_thread

How to resolve 404 errors with Eclipse/Maven Spring MVC

I have created a project as guided by www.objectdb.com/tutorial/jpa/eclipse/spring/run. When I abandon eclipse and use the maven command line to deploy this Spring MVC web app to jetty and point my browser to localhost:8080/Guestbook/ it works as your tutorial says! #1 2013-02-07 17:57 I have created a project as guided by www.objectdb.com/tutorial/jpa/eclipse/spring/run. When I abandon eclipse an ...

 
forum_thread

find() delay

Hi, I tried objectdb in following steps: 1, for 1 to 30 {trans.begin(); create typeC o; em.persist(o); trans.commit();} 2, for 1 to 30 {p = em.find(typeC.class, i); print(p)} So simple a test, there is no result in one go; I have to disable step 1 and run again, then Step 2 output the expected results. I tried em.flush(), em.clear(), etc.. that do not work. Any idea? TIA #1 2011-05-23 09:54 Hi, I tried objectdb in following steps: 1, for 1 to 30 {trans.begin(); create typeC o; em.persist(o); tr ...

 
issue

Issue with DISTINCT Select

It is getting more and more frustrating :( We've introduced distinct select instead of regular selection in our code (no changes else) and suddenly receive invalid identifiers in queries exceptions in various queries. Here's the stacktrace: Bug Version: Priority: Normal Status: Closed Replies: 12 Type:  Bug ...