ObjectDB ObjectDB

Internal Website Search

131-140 of 200 resultsRefresh

Left join fetch behaviour doesn't retrieve children?

where is the issue. Yes, without index on the collection, all if fine, but performances are weak. Xirt xirt ... forum thread. Well ! I think i pointed out a HUGE performance issue with mapped-by attribute (yeah ... . So my performance issue in my application is more due to that problem than the left join one. ( Note

Mapped By Fetch is very Slow

Well ! I think i pointed out a HUGE performance issue with mapped-by attribute (yeah ... , go the MyEntity class and remove "mapped-by". You obtain 1 second max of query fetch. So my performance issue ... : Removing mapped-by can still improve performance because there is no need in this additional query

On ensuring ID available after persist

it did. Performing em.flush() immediately after em.persist(e) seems to work (although I'm not sure about the performance hit of flushing every time). This can be encapsulated as a wrapping persist ... ) is performance considerations. Allocating IDs requires a round trip to the server. By postponing ID

Selective merge/cascade of detatched entity

anything' flag, then to perform the modification, and for things that change after the re-attach happens ... /jpa/tool/enhancer#Load_Time_Java_Agent_Enhancement_ This improved performance by between 5-30%, but this is still significantly slower than I'd hoped. I performed printlns at stages in the above code

OEM: Too many persistable types (>10) - exceeds evaluation limit (error 1011)

has indeed been performed. I have this at the entry to my application: public static void main ... ) System.out.format("ObjectDB class enhancing HAS been " + "performed."); else System.out.format("ERROR! ObjectDB class enhancing has NOT been performed."); // todo end ... I

Enhancement Check

instanceof com.objectdb.spi.SignedType support Support Hello, thank you for the hint, it performs ... to the ObjectDB log file when the exception is thrown. support Support The logging performs, thanks ... .7.6_05 fixes the issue! The remaining problems were fixed by performing a proper build

Optimization Question

which rewriting from scratch might be faster. You may also consider improving performance by: Using more embedded ... (and if you can use one transaction for deletion of many updates it can also improve performance ... that has just been released (2.0 RC3) improves performance of insert/update/delete operations

Pooling of EntityManagers

-manager. We start to make them stateless and to increase performance the persistence-managers ... the over-all performance? sorry for bothering you best regards Arne Arne Arne Stocker As it is usually the case ... context). However, whether it improves performance or not depends on too many factors

ObjectDB-2.6.9: Failed to commit transaction: Failed to set numeric value of field property Element.id using reflection

, open in NetBeans8.1, perform Clean and Build, and Run: https://www.webel.com.au/downloads/objectdb ... other errors (and to benefit from other fixes you have performed). webel Dr Darren Kelly I appreciate ... Unpack, open in NetBeans8.1, and then perform Build. There is an Ant script with post-compile

each 1-2 days objects on some objectdb level lock/block each other

one more sequence (system not more performing) hgzwicker Hans-Georg Zwicker we increased the cores to 24 ... % and around 50 threads. When we have the performance issue we are at 80% and around 200 threads hgzwicker Hans ... . The next 5 thread dumps have been taken at 7:54. Did the system return to normal performance between 7

Getting Started

ObjectDB is very easy to use. Follow the Getting Started Tutorial and the Quick Tour manual chapter and in minutes you may be able to write and run first Java programs against ObjectDB.

Prior knowledge or experience in database programming (SQL, JDBC, ORM, JPA, etc.) is not required, but some background in using the Java language is essential.

Need Help?

  1. Search ObjectDB website
  2. Read the FAQ
  3. Follow the Tutorials
  4. View or post in the forum
  5. Search or file an issue
  6. Contact support