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WebSphere Liberty Configuration

Hi! I've been trying to get ObjectDB configured with WebSphere Liberty server. I have been able to get the sample app running in TomCat but when I run the jee version of the guestbook in WebSphere I get a combination of errors depending on how I tweak the configuration the most promising error I get is this one: ... of the traditional WAS's craziness. Thanks for getting the fix out there so quickly!   -Aaron ...

 
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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. ... 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. ... a large IO write spike at the same time the issue has started (picture also attached), but after that IO looked normal. As before, ...

 
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Replication not working anymore

Hello! I upgraded my ODB Version to 2.5.4 to get rid of some bugs. Now i tried to start my replica server. It starts fine and then crashes after a few seconds with the following exception: #1 2014-01-10 15:39 Hello! I upgraded my ODB Version to 2.5.4 to get rid of some bugs. Now i tried to start my replica server ...

 
release

2.4.7

Release date: 2013-02-25 Download (5.42 MB) Binary:  objectdb-2.4.7.zip You should start by following a  tutorial or reading the manual ...

 
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Query perfromance problem

Hi, I was playing with paging and sorting recently and after trying few different aproaches got some strange behavior from ODB. First of all, I will show you results from page rendering times, but trust me - when debugging application, getting data from ODB takes a long time in one case. Anyway, one of my methods in DAO looks like this: ... times, but trust me - when debugging application, getting data from ODB takes a long time in one case. Anyway, one of my methods ...

 
release

2.5.5

Release date: 2014-04-06 Download (5.46 MB) Binary:  objectdb-2.5.5.zip You should start by following a  tutorial or reading the manual ...

 
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Using the wrong class to access a database

Hello, just starting to test ObjectDB and ran into a problem. I've created a small program to test the Point database described in the Getting Started section: ... small program to test the Point database described in the Getting Started section: package com. objectdb . tutorial ;   ...

 
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Activated ObjectDB still throws "Too many persistable types"

I have upgraded from 2.3.7 to 2.4.4 and now my activation won't work, throwing the dreaded com.objectdb.o.UserException: Too many persistable types (>10) - exceeds evaluation limit I have already reactivated and checked that my objectdb.conf is correctly used (by inserting random chars at the beginning of the file, which lead to an error). Yet I still get the error thrown. Nothing in my configuration changed except the version. What could possibly be the problem with that? ... with that? Is there any way to find out whether a started ObjectDB server is activated, without having to resort to an actual ... for that machine. I did that, too, and I keep getting the same activation code. I tried it out with 2.4.4_02 and ...

 
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Replication error on slave restart

I'm trying to enable replication on master server that was running with "recovery" enabled previously. I have copied database file to slave... and so on by manual. It worked fine. But if I restart slave server: ... slave:ODB was stoped since end of case 1) 2) started slave ODB server [NO EXCEPTIONS! DATA IS UP TO DATE](how? why?) ...

 
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Master database switching to read-only mode, possibly caused by slave failure

We had a database failure causing a production outage. Both master and slave databases have failed, slave became unresponsive and the master switched to read-only mode. By the look of it the slave database failed first and possibly caused the master to switch to read-only mode. The sequence of events was: ... Is it possible that actually the failure started on the master? In that case, if you use a combined master/slave url ... >  Is it possible that actually the failure started on the master? It is possible that the failure started on the ...