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1

Failed to read DB file while online backup is running

access (with PersistenceManagerFactory), but for the online backup I use JPA (hence I found in the manual
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1

Feature Request: Improved ObjectDB Explorer

to frequently, manually enter new information into the database (suppose we need to maintain a booklist
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Feedback on new site

Font size on new site is huge! This is especially a problem when browsing the api.   Difficult to find info on ODB1, including api javadocs. Thank you for your useful comments. The ObjectDB 1 manual is available using the Support > Knowledge Base menu. You can use the JDO menu to browse the API
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Filename.odb$ Persisting Issue

Hi, I seem to have a frequent issue with my Filename.odb$ remaining in my /db directory after my program terminates which prevents me from running my program again due to a persistence error thrown by Eclipse. I can't seem to manually terminate the file either. I usually have to fully close Eclipse
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find() cost unreasonable time!

"? TIA It means loading the graph eagerly (see Retrieval by Eager Fetch in the manual). the effect
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Getting a list of all the entity class names

I was wondering if there is any way to get a list of the entity names in the database? You can use the Metamodel API as explained by the JPA Metamodel API page in the manual. Actually, there is a simpler way to get the class names (in one line of code). It requires a JDO' s PersistenceManager
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1

How to creat a Query with Sql which returns a List<Mark> marks

); } commitAndClose(); } You may need a JOIN query as explained and demonstrated in the manual. ggrassi
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1

How to define Default Entity Listeners without persistence.xml and orm.xml

JPA you will need either listeners or callback methods as explained in chapter 3 of the manual
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1

How to open a running db in ObjectDB Explorer?

which configuration file it should use ??? See this manual page regarding the configuration file
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how to persist an object twice into two diff. collections of two diff. classes

. See the Updating Entity Objects page in the manual and this forum thread. ggrassi