[midPoint] DB error starting midPoint 3.4

[Gustavo J Gallardo]

Hi,
we are running midPoint 3.4 with database PostgreSQL 9.2, and getting this
error:
*2016-07-17 13:00:49,887 [] [midPointScheduler_Worker-2] ERROR
(org.hibernate.engine.jdbc.spi.SqlExceptionHelper): Batch entry 0 update
m_object set booleansCount=0,
createChannel='http://midpoint.evolveum.com/xml/ns/public/gui/channels-3#init
<http://midpoint.evolveum.com/xml/ns/public/gui/channels-3#init>',
createTimestamp='2016-06-02 17:23:48.969000 -03:00:00',
creatorRef_relation=NULL, creatorRef_targetOid=NULL, creatorRef_type=NULL,
datesCount=1, fullObject=?, longsCount=0, modifierRef_relation=NULL,
modifierRef_targetOid=NULL, modifierRef_type=NULL, modifyChannel=NULL,
modifyTimestamp=NULL, name_norm='validity scanner', name_orig='Validity
Scanner', objectTypeClass='9', polysCount=0, referencesCount=0,
stringsCount=0, tenantRef_relation=NULL, tenantRef_targetOid=NULL,
tenantRef_type=NULL, version=13637 where
oid='00000000-0000-0000-0000-000000000006' was aborted.  Call
getNextException to see the cause.*
*2016-07-17 13:00:49,887 [] [midPointScheduler_Worker-2] ERROR
(org.hibernate.engine.jdbc.spi.SqlExceptionHelper): ERROR: could not
serialize access due to read/write dependencies among transactions*
*  Detail: Reason code: Canceled on identification as a pivot, during
write.*
*  Hint: The transaction might succeed if retried.*
*2016-07-17 13:00:49,892 [] [midPointScheduler_Worker-2] ERROR
(org.hibernate.engine.jdbc.batch.internal.BatchingBatch): HHH000315:
Exception executing batch [could not execute batch]*


Any ideas?

Attached is complete idm.log trying to start the server.

Thanks,

GJG
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