Hi all,

Working with not updated 1.3.8295 (I would like to avoid to update it 
right now, if possible) I have received an error message while attaching 
a "big" (around 13Mb) file. This error read:

*****
2008-04-27 10:24:58,604 
[http://xpescaderias.environmentalchange.net/xwiki/bin/upload/Main/VideoPromocional]
 
[http-193.144.34.240-80-9] WARN  web.XWikiAction                 - 
Uncaught exception: Error number 3232 in 3: Exception while saving 
attachment pescaderiasLongo.wmv of document Main.VideoPromocional
Wrapped Exception: Could not execute JDBC batch update
com.xpn.xwiki.XWikiException: Error number 3232 in 3: Exception while 
saving attachment pescaderiasLongo.wmv of document Main.VideoPromocional
Wrapped Exception: Could not execute JDBC batch update
    at 
com.xpn.xwiki.store.XWikiHibernateAttachmentStore.saveAttachmentContent(XWikiHibernateAttachmentStore.java:99)
    at 
com.xpn.xwiki.doc.XWikiDocument.saveAttachmentContent(XWikiDocument.java:2517)
    at 
com.xpn.xwiki.doc.XWikiDocument.saveAttachmentContent(XWikiDocument.java:2499)
    at com.xpn.xwiki.web.UploadAction.action(UploadAction.java:129)
    at com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:188)
    at 
org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:431)
    at 
org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:236)
    at 
org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196)
    at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:432)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:710)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
    at 
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
    at 
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at 
com.xpn.xwiki.web.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:117)
    at 
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
    at 
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at 
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:228)
    at 
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
    at 
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
    at 
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:104)
    at 
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
    at 
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:216)
    at 
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
    at 
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:634)
    at 
org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:445)
    at java.lang.Thread.run(Unknown Source)


Wrapped Exception:


java.sql.BatchUpdateException: Data truncation: Data too long for column 
'XWA_ARCHIVE' at row 1
    at 
com.mysql.jdbc.PreparedStatement.executeBatchSerially(PreparedStatement.java:1669)
    at 
com.mysql.jdbc.PreparedStatement.executeBatch(PreparedStatement.java:1085)
    at 
org.apache.commons.dbcp.DelegatingStatement.executeBatch(DelegatingStatement.java:294)
    at 
org.apache.commons.dbcp.DelegatingStatement.executeBatch(DelegatingStatement.java:294)
    at 
org.hibernate.jdbc.BatchingBatcher.doExecuteBatch(BatchingBatcher.java:48)
    at 
org.hibernate.jdbc.AbstractBatcher.executeBatch(AbstractBatcher.java:246)
    at 
org.hibernate.jdbc.AbstractBatcher.prepareStatement(AbstractBatcher.java:92)
    at 
org.hibernate.jdbc.AbstractBatcher.prepareStatement(AbstractBatcher.java:87)
    at 
org.hibernate.jdbc.AbstractBatcher.prepareBatchStatement(AbstractBatcher.java:222)
    at 
org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:2224)
    at 
org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:2660)
    at 
org.hibernate.action.EntityInsertAction.execute(EntityInsertAction.java:56)
    at org.hibernate.engine.ActionQueue.execute(ActionQueue.java:250)
    at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:234)
    at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:141)
    at 
org.hibernate.event.def.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:298)
    at 
org.hibernate.event.def.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:27)
    at org.hibernate.impl.SessionImpl.flush(SessionImpl.java:1000)
    at org.hibernate.impl.SessionImpl.managedFlush(SessionImpl.java:338)
    at 
org.hibernate.transaction.JDBCTransaction.commit(JDBCTransaction.java:106)
    at 
com.xpn.xwiki.store.XWikiHibernateBaseStore.endTransaction(XWikiHibernateBaseStore.java:778)
    at 
com.xpn.xwiki.store.XWikiHibernateBaseStore.endTransaction(XWikiHibernateBaseStore.java:749)
    at 
com.xpn.xwiki.store.XWikiHibernateAttachmentStore.saveAttachmentContent(XWikiHibernateAttachmentStore.java:94)
    at 
com.xpn.xwiki.doc.XWikiDocument.saveAttachmentContent(XWikiDocument.java:2517)
    at 
com.xpn.xwiki.doc.XWikiDocument.saveAttachmentContent(XWikiDocument.java:2499)
    at com.xpn.xwiki.web.UploadAction.action(UploadAction.java:129)
    at com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:188)
    at 
org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:431)
    at 
org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:236)
    at 
org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196)
    at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:432)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:710)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
    at 
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
    at 
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at 
com.xpn.xwiki.web.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:117)
    at 
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
    at 
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at 
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:228)
    at 
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
    at 
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
    at 
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:104)
    at 
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
    at 
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:216)
    at 
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
    at 
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:634)
    at 
org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:445)
    at java.lang.Thread.run(Unknown Source)
*****

In spite of this message, the document seems has been correctly 
attached. After this action, I've attached a new file and got:

*****
2008-04-27 10:28:59,810 
[http://xpescaderias.environmentalchange.net/xwiki/bin/upload/Main/VideoPromocional]
 
[http-193.144.34.240-80-9] ERROR jdbc.AbstractBatcher            - 
Exception executing batch: 
org.hibernate.StaleStateException: Batch update returned unexpected row 
count from update [1]; actual row count: 0; expected: 1
    at 
org.hibernate.jdbc.Expectations$BasicExpectation.checkBatched(Expectations.java:61)
    at 
org.hibernate.jdbc.Expectations$BasicExpectation.verifyOutcome(Expectations.java:46)
    at 
org.hibernate.jdbc.BatchingBatcher.checkRowCounts(BatchingBatcher.java:68)
    at 
org.hibernate.jdbc.BatchingBatcher.doExecuteBatch(BatchingBatcher.java:48)
    at 
org.hibernate.jdbc.AbstractBatcher.executeBatch(AbstractBatcher.java:246)
    at 
org.hibernate.jdbc.AbstractBatcher.prepareStatement(AbstractBatcher.java:92)
    at 
org.hibernate.jdbc.AbstractBatcher.prepareStatement(AbstractBatcher.java:87)
    at 
org.hibernate.jdbc.AbstractBatcher.prepareBatchStatement(AbstractBatcher.java:222)
    at 
org.hibernate.persister.entity.AbstractEntityPersister.update(AbstractEntityPersister.java:2354)
    at 
org.hibernate.persister.entity.AbstractEntityPersister.updateOrInsert(AbstractEntityPersister.java:2307)
    at 
org.hibernate.persister.entity.AbstractEntityPersister.update(AbstractEntityPersister.java:2607)
    at 
org.hibernate.action.EntityUpdateAction.execute(EntityUpdateAction.java:92)
    at org.hibernate.engine.ActionQueue.execute(ActionQueue.java:250)
    at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:234)
    at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:142)
    at 
org.hibernate.event.def.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:298)
    at 
org.hibernate.event.def.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:27)
    at org.hibernate.impl.SessionImpl.flush(SessionImpl.java:1000)
    at org.hibernate.impl.SessionImpl.managedFlush(SessionImpl.java:338)
    at 
org.hibernate.transaction.JDBCTransaction.commit(JDBCTransaction.java:106)
    at 
com.xpn.xwiki.store.XWikiHibernateBaseStore.endTransaction(XWikiHibernateBaseStore.java:778)
    at 
com.xpn.xwiki.store.XWikiHibernateBaseStore.endTransaction(XWikiHibernateBaseStore.java:749)
    at 
com.xpn.xwiki.store.XWikiHibernateAttachmentStore.saveAttachmentContent(XWikiHibernateAttachmentStore.java:94)
    at 
com.xpn.xwiki.doc.XWikiDocument.saveAttachmentContent(XWikiDocument.java:2517)
    at 
com.xpn.xwiki.doc.XWikiDocument.saveAttachmentContent(XWikiDocument.java:2499)
    at com.xpn.xwiki.web.UploadAction.action(UploadAction.java:129)
    at com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:188)
    at 
org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:431)
    at 
org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:236)
    at 
org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196)
    at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:432)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:710)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
    at 
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
    at 
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at 
com.xpn.xwiki.web.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:117)
    at 
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
    at 
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at 
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:228)
    at 
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
    at 
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
    at 
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:104)
    at 
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
    at 
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:216)
    at 
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
    at 
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:634)
    at 
org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:445)
    at java.lang.Thread.run(Unknown Source)
2008-04-27 10:28:59,811 
[http://xpescaderias.environmentalchange.net/xwiki/bin/upload/Main/VideoPromocional]
 
[http-193.144.34.240-80-9] ERROR .AbstractFlushingEventListener  - Could 
not synchronize database state with session
org.hibernate.StaleStateException: Batch update returned unexpected row 
count from update [1]; actual row count: 0; expected: 1
    at 
org.hibernate.jdbc.Expectations$BasicExpectation.checkBatched(Expectations.java:61)
    at 
org.hibernate.jdbc.Expectations$BasicExpectation.verifyOutcome(Expectations.java:46)
    at 
org.hibernate.jdbc.BatchingBatcher.checkRowCounts(BatchingBatcher.java:68)
    at 
org.hibernate.jdbc.BatchingBatcher.doExecuteBatch(BatchingBatcher.java:48)
    at 
org.hibernate.jdbc.AbstractBatcher.executeBatch(AbstractBatcher.java:246)
    at 
org.hibernate.jdbc.AbstractBatcher.prepareStatement(AbstractBatcher.java:92)
    at 
org.hibernate.jdbc.AbstractBatcher.prepareStatement(AbstractBatcher.java:87)
    at 
org.hibernate.jdbc.AbstractBatcher.prepareBatchStatement(AbstractBatcher.java:222)
    at 
org.hibernate.persister.entity.AbstractEntityPersister.update(AbstractEntityPersister.java:2354)
    at 
org.hibernate.persister.entity.AbstractEntityPersister.updateOrInsert(AbstractEntityPersister.java:2307)
    at 
org.hibernate.persister.entity.AbstractEntityPersister.update(AbstractEntityPersister.java:2607)
    at 
org.hibernate.action.EntityUpdateAction.execute(EntityUpdateAction.java:92)
    at org.hibernate.engine.ActionQueue.execute(ActionQueue.java:250)
    at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:234)
    at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:142)
    at 
org.hibernate.event.def.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:298)
    at 
org.hibernate.event.def.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:27)
    at org.hibernate.impl.SessionImpl.flush(SessionImpl.java:1000)
    at org.hibernate.impl.SessionImpl.managedFlush(SessionImpl.java:338)
    at 
org.hibernate.transaction.JDBCTransaction.commit(JDBCTransaction.java:106)
    at 
com.xpn.xwiki.store.XWikiHibernateBaseStore.endTransaction(XWikiHibernateBaseStore.java:778)
    at 
com.xpn.xwiki.store.XWikiHibernateBaseStore.endTransaction(XWikiHibernateBaseStore.java:749)
    at 
com.xpn.xwiki.store.XWikiHibernateAttachmentStore.saveAttachmentContent(XWikiHibernateAttachmentStore.java:94)
    at 
com.xpn.xwiki.doc.XWikiDocument.saveAttachmentContent(XWikiDocument.java:2517)
    at 
com.xpn.xwiki.doc.XWikiDocument.saveAttachmentContent(XWikiDocument.java:2499)
    at com.xpn.xwiki.web.UploadAction.action(UploadAction.java:129)
    at com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:188)
    at 
org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:431)
    at 
org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:236)
    at 
org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196)
    at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:432)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:710)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
    at 
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
    at 
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at 
com.xpn.xwiki.web.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:117)
    at 
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
    at 
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at 
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:228)
    at 
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
    at 
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
    at 
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:104)
    at 
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
    at 
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:216)
    at 
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
    at 
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:634)
    at 
org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:445)
    at java.lang.Thread.run(Unknown Source)
2008-04-27 10:28:59,812 
[http://xpescaderias.environmentalchange.net/xwiki/bin/upload/Main/VideoPromocional]
 
[http-193.144.34.240-80-9] WARN  web.XWikiAction                 - 
Uncaught exception: Error number 3232 in 3: Exception while saving 
attachment pdR.ppt of document Main.VideoPromocional
Wrapped Exception: Batch update returned unexpected row count from 
update [1]; actual row count: 0; expected: 1
com.xpn.xwiki.XWikiException: Error number 3232 in 3: Exception while 
saving attachment pdR.ppt of document Main.VideoPromocional
Wrapped Exception: Batch update returned unexpected row count from 
update [1]; actual row count: 0; expected: 1
    at 
com.xpn.xwiki.store.XWikiHibernateAttachmentStore.saveAttachmentContent(XWikiHibernateAttachmentStore.java:99)
    at 
com.xpn.xwiki.doc.XWikiDocument.saveAttachmentContent(XWikiDocument.java:2517)
    at 
com.xpn.xwiki.doc.XWikiDocument.saveAttachmentContent(XWikiDocument.java:2499)
    at com.xpn.xwiki.web.UploadAction.action(UploadAction.java:129)
    at com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:188)
    at 
org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:431)
    at 
org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:236)
    at 
org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196)
    at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:432)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:710)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
    at 
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
    at 
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at 
com.xpn.xwiki.web.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:117)
    at 
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
    at 
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at 
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:228)
    at 
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
    at 
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
    at 
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:104)
    at 
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
    at 
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:216)
    at 
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
    at 
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:634)
    at 
org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:445)
    at java.lang.Thread.run(Unknown Source)


Wrapped Exception:


org.hibernate.StaleStateException: Batch update returned unexpected row 
count from update [1]; actual row count: 0; expected: 1
    at 
org.hibernate.jdbc.Expectations$BasicExpectation.checkBatched(Expectations.java:61)
    at 
org.hibernate.jdbc.Expectations$BasicExpectation.verifyOutcome(Expectations.java:46)
    at 
org.hibernate.jdbc.BatchingBatcher.checkRowCounts(BatchingBatcher.java:68)
    at 
org.hibernate.jdbc.BatchingBatcher.doExecuteBatch(BatchingBatcher.java:48)
    at 
org.hibernate.jdbc.AbstractBatcher.executeBatch(AbstractBatcher.java:246)
    at 
org.hibernate.jdbc.AbstractBatcher.prepareStatement(AbstractBatcher.java:92)
    at 
org.hibernate.jdbc.AbstractBatcher.prepareStatement(AbstractBatcher.java:87)
    at 
org.hibernate.jdbc.AbstractBatcher.prepareBatchStatement(AbstractBatcher.java:222)
    at 
org.hibernate.persister.entity.AbstractEntityPersister.update(AbstractEntityPersister.java:2354)
    at 
org.hibernate.persister.entity.AbstractEntityPersister.updateOrInsert(AbstractEntityPersister.java:2307)
    at 
org.hibernate.persister.entity.AbstractEntityPersister.update(AbstractEntityPersister.java:2607)
    at 
org.hibernate.action.EntityUpdateAction.execute(EntityUpdateAction.java:92)
    at org.hibernate.engine.ActionQueue.execute(ActionQueue.java:250)
    at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:234)
    at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:142)
    at 
org.hibernate.event.def.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:298)
    at 
org.hibernate.event.def.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:27)
    at org.hibernate.impl.SessionImpl.flush(SessionImpl.java:1000)
    at org.hibernate.impl.SessionImpl.managedFlush(SessionImpl.java:338)
    at 
org.hibernate.transaction.JDBCTransaction.commit(JDBCTransaction.java:106)
    at 
com.xpn.xwiki.store.XWikiHibernateBaseStore.endTransaction(XWikiHibernateBaseStore.java:778)
    at 
com.xpn.xwiki.store.XWikiHibernateBaseStore.endTransaction(XWikiHibernateBaseStore.java:749)
    at 
com.xpn.xwiki.store.XWikiHibernateAttachmentStore.saveAttachmentContent(XWikiHibernateAttachmentStore.java:94)
    at 
com.xpn.xwiki.doc.XWikiDocument.saveAttachmentContent(XWikiDocument.java:2517)
    at 
com.xpn.xwiki.doc.XWikiDocument.saveAttachmentContent(XWikiDocument.java:2499)
    at com.xpn.xwiki.web.UploadAction.action(UploadAction.java:129)
    at com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:188)
    at 
org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:431)
    at 
org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:236)
    at 
org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196)
    at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:432)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:710)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
    at 
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
    at 
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at 
com.xpn.xwiki.web.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:117)
    at 
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
    at 
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at 
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:228)
    at 
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
    at 
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
    at 
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:104)
    at 
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
    at 
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:216)
    at 
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
    at 
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:634)
    at 
org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:445)
    at java.lang.Thread.run(Unknown Source)
*****


Again, in spite of this message, the new file seems correctly attached 
to the document.

I've found this http://jira.xwiki.org/jira/browse/XWIKI-1811. It seems 
that upload_maxsize was already set to 32Mb last year. Or at least the 
upload_maxsize was included by default in XWiki.XWikiPreferences class. 
I can see the property, but I am not able to find the field in 
Administration.

Please, does this any sense for you? What kind of issue I am facing 
here? I don't know if this error could be "dangerous" for our database 
integrity or we can survive with it.

Thank you so much for your help,

Ricardo

-- 
Ricardo Rodríguez
Your EPEC Network ICT Team

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