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Mismatch client-server protocol prefix

years now. It's from the early days of our software when we used MySQL. This method is called thousands of times a day by different daemons and webapps. It only fails in our webservice after the NPE ... during the day: com.objectdb.o.InternalException: Error reading UTF string         at com.objectdb.o.BYR.N

Group by date / time

Hi, I'm trying to create reporting query that will return entities grouped by year / mont / day ... DAY() in ODB. So, how to build queries similar to something like this: SELECT COUNT(id) FROM ... (YEAR, MONTH, DAY, HOUR, MINUTE, SECOND) was just added to ObjectDB in build 2.2.8_02. For example

ObjectDB is opening too many sockets

on that 2 times a during day the ODB Server went crazy, created cuple of threads and started ... it running for several hours. thamal Tomas Hamal Based on that 2 times a during day the ODB Server went ... for days for observations. So no connections. The heap dump was taken from scripts, which is reading

Incremental online backup

to perform backups more often, several times a day, in order to always have a backup that's closer ... up incrementally twice a day, and one day we realize that the database has been corrupted (by which i mean the data

Date field Index is corrupted due to time change

for the fisrt time in the actual day light saving time zone. 3. Add records - as you can see from the attached DB file we added about 30K records over 2 days. 4. Try a DELETE - exception thrown ... );         calendar.set(Calendar.MONTH, Calendar.JANUARY);         calendar.set(Calendar.DAY_OF_MONTH, 1

InternalException when reading a HashMap

Hi, our app threw this exception during saving an object after running for several days (using ... ) at com.objectdb.jpa.EMImpl.commit(EMImpl.java:289) ... 16 more a few days later an instance of the same class was saving fine - no exception thrown. 8 days later the same exception was thrown

ObjectDB shuts down

Hi, we have a problem with OBjectDB shuts down every few days, sometimes every day. It always happens in the morning ie. after several hours of inactivity although we are not sure ... the proces. Will analyse more in the folowing days and provide more detailed info. lp peric.emil Emil Perić

Online Backup degrades responsiveness.

days: try { CoreService.getLogger(this).info("DB Backup Start ... { em.close(); } These 2 days I notice that the server, or mainly database ... , this only started happening these 2 days, and only when the server is busy, e.g. the DB is getting hit harder

again merger missing logs + objectdb exception

to have a solution (at least a workaround to prevent future corruption) in the next days ... Support again we have an assert (we could only stop and copy the database 2 days ago, there was not ... that you can run the Doctor on it every day after the repair it would help monitoring the issue

log entry and massive performance issues

times per day we have a simple object remove (entityManager.remove) that takes more than 5 minutes ... it cannot be reproduced as it just happens spuriously several times a day. the class is: ObjectNode an example ... to this slow behaviour we have several times a day the situation that a normal select query is blocking

Getting Started

ObjectDB is very easy to use. Follow the Getting Started Tutorial and the Quick Tour manual chapter and in minutes you may be able to write and run first Java programs against ObjectDB.

Prior knowledge or experience in database programming (SQL, JDBC, ORM, JPA, etc.) is not required, but some background in using the Java language is essential.

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