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Re: PostgreSQL + hibernate

From: Csaba Nagy <nagy(at)ecircle-ag(dot)com>
To: Myatluk Andrey <Andrey(dot)Myatluk(at)bercut(dot)ru>
Cc: Postgres general mailing list <pgsql-general(at)postgresql(dot)org>
Subject: Re: PostgreSQL + hibernate
Date: 2006-01-31 10:48:17
Message-ID: 1138704497.24321.84.camel@coppola.muc.ecircle.de (view raw or flat)
Thread:
Lists: pgsql-general
Yes, the exception is in sequence code, but it is BECAUSE of a previous
error, at least that's what I think based on the original mail. Check
your transaction handling code... do you have finally clauses around all
data access code rolling back if needed ? Just committing in the success
case is not enough, it won't be executed on errors, and leaves you with
an unusable connection and strange errors like this.

Cheers,
Csaba.


On Tue, 2006-01-31 at 11:28, Myatluk Andrey wrote:
> Hi, Csaba,
> 
> Here's the original Tomcat log. From this log you can see that exception
> is thrown in sequence code. 
> 
> 
> HTTP Status 500 -
> 
> type Exception report
> 
> message
> 
> description The server encountered an internal error () that prevented
> it from fulfilling this request.
> 
> exception
> 
> javax.servlet.ServletException: could not get next sequence value
>  
> org.apache.struts.action.RequestProcessor.processException(RequestProces
> sor.java:523)
>  
> org.apache.struts.action.RequestProcessor.processActionPerform(RequestPr
> ocessor.java:421)
>  
> org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:
> 224)
>  
> org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196)
>  
> org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:432)
>         javax.servlet.http.HttpServlet.service(HttpServlet.java:709)
>         javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
> 
> root cause
> 
> org.hibernate.exception.GenericJDBCException: could not get next
> sequence value
>  
> org.hibernate.exception.SQLStateConverter.handledNonSpecificException(SQ
> LStateConverter.java:91)
>  
> org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java
> :79)
>  
> org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.
> java:43)
>  
> org.hibernate.id.SequenceGenerator.generate(SequenceGenerator.java:96)
>  
> org.hibernate.event.def.AbstractSaveEventListener.saveWithGeneratedId(Ab
> stractSaveEventListener.java:91)
>  
> org.hibernate.event.def.DefaultSaveOrUpdateEventListener.saveWithGenerat
> edOrRequestedId(DefaultSaveOrUpdateEventListener.java:186)
>  
> org.hibernate.event.def.DefaultSaveEventListener.saveWithGeneratedOrRequ
> estedId(DefaultSaveEventListener.java:33)
>  
> org.hibernate.event.def.DefaultSaveOrUpdateEventListener.entityIsTransie
> nt(DefaultSaveOrUpdateEventListener.java:175)
>  
> org.hibernate.event.def.DefaultSaveEventListener.performSaveOrUpdate(Def
> aultSaveEventListener.java:27)
>  
> org.hibernate.event.def.DefaultSaveOrUpdateEventListener.onSaveOrUpdate(
> DefaultSaveOrUpdateEventListener.java:70)
>         org.hibernate.impl.SessionImpl.fireSave(SessionImpl.java:557)
>         org.hibernate.impl.SessionImpl.save(SessionImpl.java:545)
>         org.hibernate.impl.SessionImpl.save(SessionImpl.java:541)
>         sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>  
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.jav
> a:39)
>  
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessor
> Impl.java:25)
>         java.lang.reflect.Method.invoke(Method.java:585)
>  
> org.hibernate.context.ThreadLocalSessionContext$TransactionProtectionWra
> pper.invoke(ThreadLocalSessionContext.java:292)
>         $Proxy0.save(Unknown Source)
>  
> com.twix.webapp.registration.RegistrationSubmitAction.execute(Registrati
> onSubmitAction.java:66)
>  
> org.apache.struts.action.RequestProcessor.processActionPerform(RequestPr
> ocessor.java:419)
>  
> org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:
> 224)
>  
> org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196)
>  
> org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:432)
>         javax.servlet.http.HttpServlet.service(HttpServlet.java:709)
>         javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
> 
> note The full stack trace of the root cause is available in the Apache
> Tomcat/5.5.12 logs.
> Apache Tomcat/5.5.12
> 
> -----Original Message-----
> From: Csaba Nagy [mailto:nagy(at)ecircle-ag(dot)com] 
> Sent: Tuesday, January 31, 2006 12:44 PM
> To: Myatluk Andrey
> Cc: Postgres general mailing list
> Subject: Re: [GENERAL] PostgreSQL + hibernate
> 
> The error you're seeing comes from before. You only see the fact that
> there was an error, and postgres is ignoring your queries until you roll
> back. I bet you have a glitch in your transaction handling code, like
> opening a transaction, getting an error on it, hibernate throws an error
> and you don't have a finally clause to roll back the transaction.
> 
> HTH,
> Csaba.
> 
> 
> On Tue, 2006-01-31 at 08:13, Myatluk Andrey wrote:
> > Hi!
> > 
> > I have an application, consisting of Struts 1.2 + Tomcat 5.5 +
> Hibernate
> > 3.1 + PostgreSQL 8.1
> > 
> > The application is developed on WinXP and installed on Fedora Core 4.
> > 
> > On local machine everything works OK. Both databases are created from
> > the same script and application is the same.
> > 
> > But when installed on FC, I get the following exception:
> > 
> > Hibernate: select nextval ('hibernate_sequence') Jan 30, 2006 8:21:35
> PM
> > org.hibernate.util.JDBCExceptionReporter logExceptions
> > WARNING: SQL Error: 0, SQLState: 25P02
> > Jan 30, 2006 8:21:35 PM org.hibernate.util.JDBCExceptionReporter
> > logExceptions
> > SEVERE: ERROR: current transaction is aborted, commands ignored until
> > end of transaction block Jan 30, 2006 8:21:35 PM
> > 
> > Although when I'm trying to call hibernate sequence it works fine.
> > 
> > twix=#  select nextval ('public.hibernate_sequence');  nextval
> > ---------
> >        3
> > (1 row)
> > 
> > twix=#  select nextval ('hibernate_sequence');  nextval
> > ---------
> >        4
> > (1 row)
> > 
> > The sequence was created with the following command:
> > twix=# create sequence hibernate_sequence; CREATE SEQUENCE
> > 
> > I don't see what the problem could be.
> > 
> > Because of the connectivity problem could not connect to remote
> database
> > with pgAdmin. But it's the question for the next post.
> > 
> > Andrey
> > 
> > 
> > 
> > 
> > ---------------------------(end of
> broadcast)---------------------------
> > TIP 3: Have you checked our extensive FAQ?
> > 
> >                http://www.postgresql.org/docs/faq
> 


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