java - Postgresql / Hibernate - Large Objects may not be used in auto-commit mode -


recently migrated application oracle postgresql (9.2.20). used org.hibernate.type.materializedblobtype storing document contents (bytes property) in db:

<hibernate-mapping >   <class name="x.y.z.entities.documentdataentity" table="ds_document_data">     <id name="id" column="id_" type="java.lang.string">       <generator class="uuid2"/>     </id>     <property name="bytes" column="bytes_" type="org.hibernate.type.materializedblobtype"/>   </class> </hibernate-mapping>

bytes property in documentdataentity class: 

private byte[] bytes;

it works fine in oracle in postgresql, loading documentdataentity throws exception: 

18:54:57 error [ds/root] i.a.w.c.d.e.applicationexceptionhandler -| error occured in calling rest method! org.postgresql.util.psqlexception: large objects may not used in auto-commit mode.     @ org.postgresql.largeobject.largeobjectmanager.open(largeobjectmanager.java:265)     @ org.postgresql.largeobject.largeobjectmanager.open(largeobjectmanager.java:251)     @ org.postgresql.jdbc.abstractblobclob.getlo(abstractblobclob.java:283)     @ org.postgresql.jdbc.abstractblobclob.getbinarystream(abstractblobclob.java:127)     @ org.hibernate.type.descriptor.java.primitivebytearraytypedescriptor.wrap(primitivebytearraytypedescriptor.java:115)     ... 163 common frames omitted wrapped by: org.hibernate.hibernateexception: unable access lob stream     @ org.hibernate.type.descriptor.java.primitivebytearraytypedescriptor.wrap(primitivebytearraytypedescriptor.java:118)     @ org.hibernate.type.descriptor.java.primitivebytearraytypedescriptor.wrap(primitivebytearraytypedescriptor.java:26)     @ org.hibernate.type.descriptor.sql.blobtypedescriptor$1.doextract(blobtypedescriptor.java:48)     @ org.hibernate.type.descriptor.sql.basicextractor.extract(basicextractor.java:47)     @ org.hibernate.type.abstractstandardbasictype.nullsafeget(abstractstandardbasictype.java:238)     @ org.hibernate.type.abstractstandardbasictype.nullsafeget(abstractstandardbasictype.java:234)     @ org.hibernate.type.abstractstandardbasictype.nullsafeget(abstractstandardbasictype.java:224)     @ org.hibernate.type.abstractstandardbasictype.hydrate(abstractstandardbasictype.java:300)     @ org.hibernate.persister.entity.abstractentitypersister.hydrate(abstractentitypersister.java:2790)     @ org.hibernate.loader.plan.exec.process.internal.entityreferenceinitializerimpl.loadfromresultset(entityreferenceinitializerimpl.java:306)     @ org.hibernate.loader.plan.exec.process.internal.entityreferenceinitializerimpl.hydrateentitystate(entityreferenceinitializerimpl.java:233)     @ org.hibernate.loader.plan.exec.process.internal.abstractrowreader.readrow(abstractrowreader.java:103)     @ org.hibernate.loader.plan.exec.internal.entityloadquerydetails$entityloaderrowreader.readrow(entityloadquerydetails.java:239)     @ org.hibernate.loader.plan.exec.process.internal.resultsetprocessorimpl.extractresults(resultsetprocessorimpl.java:122)     @ org.hibernate.loader.plan.exec.internal.abstractloadplanbasedloader.executeload(abstractloadplanbasedloader.java:122)     @ org.hibernate.loader.plan.exec.internal.abstractloadplanbasedloader.executeload(abstractloadplanbasedloader.java:86)     @ org.hibernate.loader.entity.plan.abstractloadplanbasedentityloader.load(abstractloadplanbasedentityloader.java:167)     @ org.hibernate.persister.entity.abstractentitypersister.load(abstractentitypersister.java:4019)     @ org.hibernate.event.internal.defaultloadeventlistener.loadfromdatasource(defaultloadeventlistener.java:508)     @ org.hibernate.event.internal.defaultloadeventlistener.doload(defaultloadeventlistener.java:478)     @ org.hibernate.event.internal.defaultloadeventlistener.load(defaultloadeventlistener.java:219)     @ org.hibernate.event.internal.defaultloadeventlistener.doonload(defaultloadeventlistener.java:116)     @ org.hibernate.event.internal.defaultloadeventlistener.onload(defaultloadeventlistener.java:89)     @ org.hibernate.internal.sessionimpl.fireload(sessionimpl.java:1129)     @ org.hibernate.internal.sessionimpl.immediateload(sessionimpl.java:997)     @ org.hibernate.proxy.abstractlazyinitializer.initialize(abstractlazyinitializer.java:157)     @ org.hibernate.proxy.abstractlazyinitializer.getimplementation(abstractlazyinitializer.java:266)     @ org.hibernate.proxy.pojo.javassist.javassistlazyinitializer.invoke(javassistlazyinitializer.java:73)

note:

  • i'm using spring (4.3.8.release) , hibernate (5.0.12.final).
  • i used @transactional annotaion in documentdatamanager bean's load method.
  • saving/loading works fine in oracle.


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