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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 ... time (100k absolute maximum). We will probably have multiple instances per client for availability
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1

ArrayIndexOutOfBoundsException

that you have different versions of your classes in different clients? In that case - each client may send ... , and one client may see an object with a version that it doesn't know yet. Please verify that your classes on all the clients are identical. Here is the output from the Doctor: ObjectDB Doctor [version 2.3.4
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ClassCastException on SELECT NEW ... after UPDATE over Java RMI

a Java RMI interface which allows remote RMI clients to run JPQL queries on the DB. The application ... .id, r.fileName) FROM RecordingMetaData AS r WHERE ... A remote RMI client runs SELECT (but not SELECT ... is that once we UPDATE a record from the client (via the RMI interface), all SELECT NEW ... queries
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How to open a running db in ObjectDB Explorer?

. There are two possible solutions. You can switch from embedded mode to client-server mode. Unlike embedded mode, client server mode supports accessing a database concurrently from multiple processes ... to that server in client-server mode. That's really cool. It works! Thank
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1

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

the master from the client web application (e.g. due to a networking issue). >  Is it possible ... and WRITE requests are rejected. Firstly, we do not use combined master/slave url in our client as read ... , maybe because of repeating attempts?) As I mentioned, our clients are not configured to connect
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1

The server cannot start in CentOS

it in the background, try: java -cp objectdb.jar com.objectdb.Server start &   Really? My client ... .jar, it turns out use my client's objectdb.conf in jpab. Could you please give a runnable example ... yet. Would you please give me a setting for client? My server setting is:  
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1

Connecting to a remote objectdb server

I am trying to configure my application in a client-server objectdb setup via tcp/ip. So I first ... ://db.mydomain.com/db" /> The objectdb: prefix is used on the client to connect to the database ... directory. That means our app is not connected to db server even if I had configured our client app like
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1

Database size is much larger than expected (x2)

the problem is the responsibility of clients, and designing a test case is the one of providers. This can be relative to Fat client or thin client problem. I believe since a client points the problem, a provider should give a well-advised test case to proof themselves. Not all client are stubborn as
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1

Double persist of Entity field with Cascade.ALL

on the client side (i.e. by adding or removing new Chapters), merging the Book class on the server ... . It contains 1. App client (Book_dberror_client), 2. The enterprise application (Book_dberror) which contains ... for some use-cases. Running it is same as above, only replace: Book_dberror_client with Book_db_client
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1

find() cost unreasonable time!

. However, my situation is multiple clients maintaining a tree, each will make CRUD operations independently, so one have to refresh the status of a node since other clients will change it. A List in memory is just for the current client, which is unknown to the other clients.     Would you please give another advices