About database

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Forum
10

Database is locked when in use

for us :-( Do you have any settings or other way to handle this? Using copy & paste to clone a database when it is in
Forum
10

database optimization

Hi, couple of questions regarding database optimization: 1) Noticed something odd with the level 2 cache configuration:    level2="0mb" -> 20 msec query    level2="2mb" -> 10 msec    level2="10mb" -> 40 msec Question: why is a larger level2 cache worse than no level2 cache, ie 10mb worse than 0mb
Forum
10

Does JPA have any configuration to create DDL's that are database specific

that are database specific.   Maybe what you are looking for is the Table annotation. But this is relevant
Issue
10

Explorer Features - refresh + viewing open embedded database

Request for feature: Ability to auto-refresh an explorer view, say at regular intervals of a few seconds. (at a minimum one ought to be able to manually refresh, for example the list of persistent types). additionally, it would be useful to be able to view an embedded database (read only mode) via the explorer. jastorga olyjosh
Forum
10

Get list of database files

Hi, we would like to know if there is any API we can use to get a list of all database files on an ObjectDB server. The ObjectDB explorer has such a feature (File->Open C/S Connection->Browse...). Thanks for help! There is an undocumented method, which is indeed in use by the Explorer: import
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10

how to create in memery database in objectdb

plz can u give or help me how to create in memory database in objectdb   with example See answer in this forum thread (also use that other thread for further discussion). yadavanil
Forum
10

Is there a way to extract the schema from an existing Database?

Hi ObjectDB, Is there a way to extract the schema from an existing Database? i.e. without using my class files Thanks EKK The schema is available for viewing in the Explorer. You may use the JPA Metamodel API to extract it using your own code. EKK
Forum
10

Many clients access same database

Hi, I have a program to manage clients of my tennis club. But we have several different computer programs open that access the database. How can I implement this topology so that there is one Persistence context for all the client programs on the different computers. For example: When I change
Forum
10

Need to close+open database for a commit to be taken into account

Hi, I have one case where commit (update of entity in this case) is not taken in account unless database is actually closed and re-open, no error. I tried to use flush instead of close+re-open but it does not work. So currently there is a dirty close + open + reload on each update
Issue
10

NullPointerException on initial database creation

I'm getting the following exception on initial creation of a database.  There's no indication as to what's wrong and there's nothing in the log.   com.objectdb.o.InternalException: java.lang.NullPointerException: null java.lang.NullPointerException at com.objectdb.o.SCO.b(SCO.java:209) at com