Re: Column order seems to play a role after migration from 8.1 to 9.1 if sequences are used

This is a bug in their code. They are relying on the presumption that id is
the first column

As for pg versions. Use the projects distros we patch them ahead of anyone.
On Apr 21, 2016 8:45 AM, "Andreas Arens" <andreas(dot)arens(at)list(dot)lu> wrote:

> Dave,
>
> Well, it seems that the PostgreSQL server itself does not log an error,
> but I get it from the JDBC driver:
>
> Caused by: org.postgresql.util.PSQLException: Bad value for type int :
> lkjlkjlkj ljlékjlékj lék lkjlék àékj éà àék
> at
> org.postgresql.jdbc2.AbstractJdbc2ResultSet.toInt(AbstractJdbc2ResultSet.java:2955)
> at
> org.postgresql.jdbc2.AbstractJdbc2ResultSet.getInt(AbstractJdbc2ResultSet.java:2138)
> at
> org.jboss.jca.adapters.jdbc.WrappedResultSet.getInt(WrappedResultSet.java:1052)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> [rt.jar:1.7.0_67]
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
> [rt.jar:1.7.0_67]
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> [rt.jar:1.7.0_67]
> at java.lang.reflect.Method.invoke(Method.java:606) [rt.jar:1.7.0_67]
> at
> org.hibernate.engine.jdbc.internal.proxy.AbstractResultSetProxyHandler.continueInvocation(AbstractResultSetProxyHandler.java:104)
> [hibernate-core-4.0.1.Final.jar:4.0.1.Final]
>
> which might be the result from a wrong assumption within the Hibernate
> layer while evaluating the result set. This clearly supports your view.
> Weird though that it only appears with 9.1 and not 8.1.
>
> I am upgrading to 9.1 as it is the latest version supported by Ubuntu
> 12.04 LTS. Once this is done, the system will be migrated to 16.04 LTS and
> then the database to PostgreSQL to 9.5.
>
> Andreas
>
>
> [image: Inactive hide details for Dave Cramer ---21/04/2016
> 14:24:47---Andreas, So did the server have an error after that ? It does no]Dave
> Cramer ---21/04/2016 14:24:47---Andreas, So did the server have an error
> after that ? It does not appear to. In
>
> From: Dave Cramer <pg(at)fastcrypt(dot)com>
> To: Andreas Arens <andreas(dot)arens(at)list(dot)lu>
> Cc: List <pgsql-jdbc(at)postgresql(dot)org>
> Date: 21/04/2016 14:24
> Subject: Re: [JDBC] Column order seems to play a role after migration
> from 8.1 to 9.1 if sequences are used
> Sent by: pgsql-jdbc-owner(at)postgresql(dot)org
> ------------------------------
>
>
>
> Andreas,
>
> So did the server have an error after that ? It does not appear to. In
> which case it is still some problem with hibernate. At this point I suspect
> hibernate thinks the first value returned is the id which it subsequently
> tries to put into the id column?
>
> PS. Why did you not upgrade to 9.5 ? FYI, 9.2 has significant performance
> benefits over 9.1
>
>
>
> Dave Cramer
>
> *davec(at)postgresintl(dot)com* <davec(at)postgresintl(dot)com>
> *www.postgresintl.com* <http://www.postgresintl.com/>
>
> On 21 April 2016 at 08:19, Andreas Arens <*andreas(dot)arens(at)list(dot)lu*
> <andreas(dot)arens(at)list(dot)lu>> wrote:
>
> Dave,
>
> Thanks a lot for your quick reply.
>
> Unfortunately, I don't think your guess is right as the generated
> statement does not contain the id. Here's what the PostgreSQL server logs:
>
> 2016-04-21 14:11:21 CEST LOG: execute <unnamed>: insert into phrases
> (frequency, language, phrase) values ($1, $2, $3) RETURNING *
> 2016-04-21 14:11:21 CEST DETAIL: parameters: $1 = '4', $2 = 'ger', $3
> = 'lkjlkjlkj ljlékjlékj lék'
>
> Another point that speaks against this theory is that the same JDBC
> driver jar works fine with PostgreSQL 8.1 .
>
> Andreas
>
> Dave Cramer ---21/04/2016 12:15:24---Andreas, My guess is that
> hibernate is adding the id parameter into the statement
>
> From: Dave Cramer <*pg(at)fastcrypt(dot)com* <pg(at)fastcrypt(dot)com>>
> To: Andreas Arens <*andreas(dot)arens(at)list(dot)lu* <andreas(dot)arens(at)list(dot)lu>>
> Cc: List <*pgsql-jdbc(at)postgresql(dot)org* <pgsql-jdbc(at)postgresql(dot)org>>
> Date: 21/04/2016 12:15
> Subject: Re: [JDBC] Column order seems to play a role after migration
> from 8.1 to 9.1 if sequences are used
> Sent by: *davecramer(at)gmail(dot)com* <davecramer(at)gmail(dot)com>
> ------------------------------
>
>
>
>
> Andreas,
>
> My guess is that hibernate is adding the id parameter into the
> statement and expects it to be the first column.
>
> This could be confirmed by looking at the server logs.
>
> P.S. Please subscribe to the pgjdbc list
>
> Dave Cramer
>
> *davec(at)postgresintl(dot)com* <davec(at)postgresintl(dot)com>
> *www.postgresintl.com* <http://www.postgresintl.com/>
>
> On 21 April 2016 at 04:59, Andreas Arens <*andreas(dot)arens(at)list(dot)lu*
> <andreas(dot)arens(at)list(dot)lu>> wrote:
> Hello,
>
> I don't know if the root cause of my observation is effectively
> JDBC-related, but I thought it might be the best starting point.
>
> TL:DR: After migrating a PosgreSQL DB from 8.1 to 9.1, I had to
> reorder the columns of a table to make sure the primary key column that is
> automatically filled by a sequence, is the first one in the table. This was
> not an issue with 8.1. The problem - during INSERT - only occurs via JDBC.
> When using the CLI (i.e. psql), it works fine.
>
> The details of what I've observed:
>
> In preparing a major system upgrade for a legacy application, I
> tested the migration of the PostgreSQL server from version 8.1 to 9.1 (on
> Ubuntu LTS 12.04). On top of the database I use JBoss AS 7.1 with
> Hibernate, JDBC and Java 1.7.
> I tested with different but recent JDBC drivers for the Java 1.7
> platform (i.e. postgresql-9.3-1102.jdbc41.jar,
> postgresql-9.4.1208.jre7.jar). The entity beans are specified to have their
> primary key (Integer value) generated by the database via a sequence:
>
> In the bean:
>
> @Id
> @GeneratedValue(strategy = GenerationType.*IDENTITY*)
> @Column(name = "id")
> *public* java.lang.Integer getId()
> {
> *return* id;
> }
>
> In the table:
>
> \d phrases
> Table "phrases"
> Column | Type |
> Modifiers
>
> -----------+----------------------+----------------------------------------------------------------------
> phrase | text |
> frequency | integer | default 4
> language | character varying(3) |
> id | bigint | not null default
> nextval('phrases_id_seq'::regclass)
> Indexes:
> "phrases_pkey" PRIMARY KEY, btree (id)
>
>
> However, after switching to the 9.1 server, I got following error
> message:
>
> WARN [org.hibernate.engine.jdbc.spi.SqlExceptionHelper] SQL Error:
> 0, SQLState: 22003
> ERROR [org.hibernate.engine.jdbc.spi.SqlExceptionHelper] Bad value
> for type int : lklkh
>
>
> Increasing the log levels provided me with following details:
>
> DEBUG [org.hibernate.SQL] insert into phrases (frequency, language,
> phrase) values (?, ?, ?)
> TRACE [org.hibernate.type.descriptor.sql.BasicBinder] binding
> parameter [1] as [INTEGER] - 4
> TRACE [org.hibernate.type.descriptor.sql.BasicBinder] binding
> parameter [2] as [VARCHAR] - ger
> TRACE [org.hibernate.type.descriptor.sql.BasicBinder] binding
> parameter [3] as [VARCHAR] - lklkh
> WARN [org.hibernate.engine.jdbc.spi.SqlExceptionHelper] SQL Error:
> 0, SQLState: 22003
> ERROR [org.hibernate.engine.jdbc.spi.SqlExceptionHelper] Bad value
> for type int : lklkh
>
> Performing the INSERT via CLI worked nicely:
>
> INSERT INTO phrases (frequency, language, phrase) VALUES (4, 'ger',
> 'lklh');
> INSERT 0 1
>
> This led me to the assumption that there was something wrong with
> the JDBC driver or the hibernate layer, but none of the tested
> modifications made the problem go away. When searching for the given SQL
> error code & state, I stumbled on a stackoverflow post (
> *http://stackoverflow.com/questions/25977903/hibernate-columns-mismatch-on-persistance*
> <http://stackoverflow.com/questions/25977903/hibernate-columns-mismatch-on-persistance>),
> and indeed, after I have re-ordered the columns in the table moving the
> id column to the first position, it works without a flaw.
>
> \d phrases
> Table "phrases"
> Column | Type |
> Modifiers
>
> -----------+----------------------+----------------------------------------------------------------------
> id | bigint | not null default
> nextval('phrases_id_seq'::regclass)
> phrase | text |
> frequency | integer | default 4
> language | character varying(3) |
> Indexes:
> "phrases_pkey" PRIMARY KEY, btree (id)
>
> As it took me quite a while to figure out this work around, I
> wanted to share this with the community and ask the question, if you have
> any ideas what the actual root cause is. Please point me to any resources,
> if that is a known and justified behaviour of the database. Otherwise, I
> hope this might help others in similar situations.
>
> Cheers,
> Andreas
>
>
>