About PESSIMISTIC_READ

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Issue
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Page cache File handling produced an java.io.IOException: Negative seek offset

  The Exception: Failed to read from file 'C:\Users\DEVELO~1\AppData\Local\Temp\objectdb ... .PersistenceException Failed to read from file 'C:\Users\DEVELO~1\AppData\Local\Temp\objectdb ... (Thread.java:745) Caused by: com.objectdb.o.UserException: Failed to read from file 'C:\Users\DEVELO~1
Forum
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Unable to execute update query

to do it: [ObjectDB 2.6.5_04] javax.persistence.PersistenceException Failed to read from file '/tmp/objectdb ... .objectdb.o.UserException: Failed to read from file '/tmp/objectdb_1504640757207474899/UpdateQuery_589.mrg ... more [ObjectDB 2.6.5_04] javax.persistence.PersistenceException Failed to read from file '/tmp/objectdb
Forum
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Which storage fits best to ObjectDB?

is reading/writing the files. The tests are showing that the HW RAID5/6 of HDDs deliver comparable ... , so in fact it means sequential reads/writes. If it is tested on small files the speed is getting ... read/write the DB files by large chunks and then it parses it within the RAM (so it would mean
Forum
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zip file or JAR manifest missing

/objectdb.jar Some of projects can read the DB, but others can not read or write the DB. Exception in ... .getEntityManager(); public void read(){   int iCnt = 10;   while (--iCnt>=0){    trans.begin();    Page ... ");   SingleManager.clearDB("URI");   new PageTest().read(); } } the version 2.2.8_6 can not pass, saying "use
Result
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ObjectDB version 2.2.1

Version 2.2.1 Added support for using ObjectDB with JBoss AS 6.0 / 6.1. Fixed several bugs in handling eager fetch. Fixed a pessimistic locking bug. Fixed a bug in using primary key fields in queries. Fixed a bug in queries on deleted objects before commit / flush.
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ObjectDB version 2.2.8

NullPointerException-s (issues #365, #366, #368). Fixed a pessimistic locking deadlock (issue #342).
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ObjectDB version 2.3.1

. Improved UnsupportedOperationException error message. Fixed a pessimistic lock timeout bug (issue #520
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ObjectDB version 2.3.2

of Long) and then updated. Fixed retrieval with pessimistic lock to bypass cache and to force refresh.
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ObjectDB version 2.6.8

Version 2.6.8 Added JPA XML validation schema files to Maven/JEE objectdb.jar. Added automatic release of pessimistic locks on client-server connection failure. Fixed an OptimisticLockException bug on commit after flushing a removed modified entity object. Fixed a NullPointerExeption on new index
Issue
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InternalException during producer/consumer scenario

and LockMode set to PESSIMISTIC_WRITE. This results in the exceptions below. Could you advise on the errors