About lock

111-120 of 180Refresh
Issue
2

ObjectDB 2 JDO Manual

commit) pessimistic locking is something I miss, for example, and it to some degree it is a compromise ... , and in some of them JPA is better (e.g. in locking, as you noted). I think you need really good reasons
Forum
2

ODB IndexActivation NullPointerException

:  Sometimes we get still the Nullpointer (IXM.java:322) and then it happens again that we run into a dead lock   Maybe ... (e.g. by using join). We run still into a dead lock. I adding a few screenshots and I hope it help
Forum
2

Replication issue, Replayer failing due to NullPointerException.

="512mb" /> <locking version ... " /> <locking version-check="true" />
Forum
2

500Mb ObjectDb database opening issue

500Mb ObjectDb database opening issue
Forum
2

Transaction isolation support?

of that specific object using the first EntityManager, due the default optimistic locking (unless disabled in ... the same object by different users concurrently (even for read) you can use explicit locking
Issue
2

Unexpected error when loading all entity instance

process that function as two separate processes)? ObjectDB locks the database file to avoid concurrent access by different processes, but the lock may not be effective on some systems, or in the same
Forum
2

Deadlock, if two threads try to close an entity manager

order to see a deadlock. The profiling info does not include lock and deadlock information ... require locks on both the EntityManager and the EntityManagerFactory but in a different order
Result
2

ObjectDB version 2.7.6

(no enhancement) by minimising  tracking backups. Improved concurrency by using lock free Synchronization (issue #2327). Fixed a regression optimistic lock exception bug (due to fix of issue #2280). Fixed
Forum
1

Connection is closed Caused by: java.io.EOFException

" /> <locking version-check="true
Forum
1

Database Inconsistency or corruption

all locked objects     System.out.println("Trying to merge first object " + em.getLockMode(ov