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api-jdo

javax.jdo.JDOFatalException

This class represents exceptions that are fatal; that is, the condition that caused it cannot be bypassed even if the operation is retried.(Exception of JDO)

 
api-jdo

javax.jdo.JDONullIdentityException

An instance of this class is thrown when attempting to create an object id when the object id constructor parameter is null.(Exception of JDO)

 
api-jdo

javax.jdo.JDOReadOnlyException

This class represents exceptions caused by an attempt to update a datastore when the PMF was created as "read-only".(Exception of JDO)

 
forum_thread

Working with a cleared cache

I'm working on trying to improve the performance of our database processing class and I'm attempting to keep the L1 cache within the PersistenceManager cleared in an effort to reduce its memory footprint. The code snippet below is part of a Callable task that is run repeatedly with a given list of commands. When I run the code as written I start getting the stack traces that are listed.  However, if I comment out the calls to makeTransactionalAll() and evictAll() everything works.... at a time. One of my next steps will be to increase the number of threads so if you have any suggestions on what would help in a ...

 
forum_thread

Server vs embedded mode in multi-instance scenario

We are creating a web app that will have multiple different clients, each on their own EC2 instance(s). The clients do not need to share any data, so each could have its own ObjectDB. Clients have a user base of about 2,000 to 60,000 users that could possibly be using their application at any given time (100k absolute maximum). We will probably have multiple instances per client for availability concerns as well as auto scale during peak usage, at least for the benefit of our web application if not for objectdb.... could be localhost . In order to have a port number you have to specify a port when you open the database in embedded mode, ...

 
api-jdo

javax.jdo.JDOUserException

This class represents user errors that can possibly be retried.(Exception of JDO)

 
api-jdo

javax.jdo.JDOFatalInternalException

This class represents errors in the implementation for which no user error handling is possible.(Exception of JDO)

 
api-jdo

javax.jdo.JDOOptimisticVerificationException

This class represents optimistic verification failures.(Exception of JDO)

 
api-jdo

javax.jdo.JDOObjectNotFoundException

This class represents exceptions caused by the user accessing an object that does not exist in the datastore.(Exception of JDO)

 
api-jdo

javax.jdo.JDOUserCallbackException

This class represents exceptions caused by exceptions thrown during execution of callbacks or listeners.(Exception of JDO)