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I can provide? sjzlondon Steve Zara Please check for a longer stack trace (including nested stack traces) in the log file. support Support

String representation of a query

.JpaQuery.class).getQueryString() I would like to measure time of query execution and log

Database crash

just running objectdb we run into a crash situation as described in the attached log. What can be the reason for such a behaviour ? Objectdb doctor just hanging completely without message after reading the database file File

Eclipse/JPA database tutorial

, check if there are exceptions in the console or in the server log. support Support Thanks

ArrayIndexOutOfBoundsException at com.objectdb.o.ALS.c(ALS.java:89)

.getResultList.asScala // Convert to scala collection // Check stuff and log certain events em.close emf

multiple LEFT JOINs do not work as expected

has null as it's parent. The log generated when I run this against the DB is attached

Server connection management

The server does not appear to release broken connections. My typical development pattern is to keep reloading my war file in tomcat until the permgen space runs out, and then I kill and restart tomcat. After a few days of this, the server stops responding, and I see the following in the server logs

ClassCastException: com.objectdb.o.SLV cannot be cast to com.objectdb.o.RSV

Hello, we have found another exception in objectdb.log: java.lang.ClassCastException: com.objectdb.o.SLV cannot be cast to com.objectdb.o.RSV at com.objectdb.o.RSV.compareTo(RSV.java:158) at com.objectdb.o.INV.compareTo(INV.java:215) at com.objectdb.o.INV.J(INV.java:315) at com.objectdb.o.PAG


No idea what happened. A simple getResultList() opearation. DB table affected size is ~ 26000 records, physical DB file size is ~ 8.5MB Thanks for any help ! Leon log file: ------------------------------------------------------------------------------------------------------------------------ [2016

Exception Failed to read from file

Hello, we have found several these exceptions in our log [ObjectDB 2.5.0_06] javax.persistence.PersistenceException Failed to read from file 'C:\SafeQORS\server\cache\MainORSCache.odb' (error 117) at com.objectdb.jpa.EMImpl.find(EMImpl.java:596) at com.objectdb.jpa.EMImpl.find(EMImpl.java:514

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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