61 | Benchmark native JPA of Versant database (without datanucleous)Now Versant DB (db4o commercial) has JPA implementation Can you benchmark this Object Oriented DB to compare with Object DB? joseaio Jose A. Illescas Since the Versant Object Database (unlike db4o) is not open source it would be impossible to include it in the JPAB benchmark results |
61 | database optimizationHi, 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? 2 |
61 | Database is locked when in use a database when it is in active use is unsafe. With ObjectDB 2.x you should use online backup |
61 | config file for embedded databaseHi, I'm going back to embedded mode after some time with client/server mode. Question: how does the embedded jar find it's config file? Dave ps: thanks for the improvements to the explorer - still need a way to view (view only) an open embedded database. dmoshal David Moshal The same procedure |
61 | What is the query to fetch all schema list of my database?Can you please tell me how to fetch all schema available in my database? Deepak_1996 Deepak Kumar Maharana You can use the JPA metamodel API. support Support |
61 | Need to close+open database for a commit to be taken into accountHi, 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 |
61 | how to create in memery database in objectdbplz can u give or help me how to create in memory database in objectdb with example yadavanil anil yadav See answer in this forum thread (also use that other thread for further discussion). support Support |
61 | Cache configuration of database file pages, query programs, query resultsAre there some possibilities to configure following caches in order to keep cache data for only some important entity types and for the entire life cycle of the EntityManagerFactory. Cache of database file pages. Cache of query programs. Cache of query execution results. btc_es BTC EmbeddedSystems |
12 | new database errorException in thread "main" [ObjectDB 2.7.3] Unexpected exception (Error 990) Generated by Java HotSpot(TM) Client VM 1.8.0_31 (on Windows 8.1 6.3). Please report this error on http://www.objectdb.com/database/issue/new com.objectdb.o.InternalException: com.objectdb.o.UserException: Failed |
12 | config file for embedded databaseHi, I'm going back to embedded mode after some time with client/server mode. Question: how does the embedded jar find it's config file? Dave ps: thanks for the improvements to the explorer - still need a way to view (view only) an open embedded database. dmoshal David Moshal Please read and follow |
