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From "Kristian Waagan (JIRA)" <j...@apache.org>
Subject [jira] Resolved: (DERBY-3650) internal multiple references from different rows to a single BLOB/CLOB stream leads to various errors when second reference used.
Date Sun, 18 Apr 2010 13:02:24 GMT

     [ https://issues.apache.org/jira/browse/DERBY-3650?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Kristian Waagan resolved DERBY-3650.
------------------------------------

    Issue & fix info: [Known fix, Repro attached]  (was: [Known fix, Patch Available,
Repro attached])
            Assignee: Kristian Waagan
       Fix Version/s: 10.6.0.0
          Resolution: Fixed

Unless problems arise, I don't expect to do more work on this issue. Resolving as fixed.

> internal multiple references from different rows to a single BLOB/CLOB stream leads to
various errors when second reference used.
> ---------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: DERBY-3650
>                 URL: https://issues.apache.org/jira/browse/DERBY-3650
>             Project: Derby
>          Issue Type: Bug
>          Components: Network Client, SQL, Store
>    Affects Versions: 10.3.3.0, 10.4.1.3
>         Environment: Mac OSX 10.4
> JDK 1.5.0_13
> Hibernate EntityManager 3.2.1
>            Reporter: Golgoth 14
>            Assignee: Kristian Waagan
>             Fix For: 10.6.0.0
>
>         Attachments: cloning-methods.html, derby-3650-preliminary_2_diff.txt, derby-3650-preliminary_2_reworked-1b.diff,
derby-3650-preliminary_2_reworked.diff, derby-3650-preliminary_diff.txt, derby-3650_tests_diff.txt,
Derby3650EmbeddedRepro.java, Derby3650FullClientRepro.java, Derby3650FullRepro.java, Derby3650Repro.java,
DerbyHibernateTest.zip, testdb.zip, traces_on_FormatIdStream_alloc.txt, UnionAll.java
>
>
> Derby + Hibernate JPA 3.2.1 problem on entity with Blob/Clob
> Hi,
> I'm using Derby in Client - Server mode with Hibernate JPA EJB 3.0.
> When a query on an entity containing a Clob and some joins on other entites is executed,
an exception with the following message is thrown:
>   XJ073: The data in this BLOB or CLOB is no longer available.  The BLOB/CLOB's transaction
may be committed, or its connection is closed.
> This problem occurs when the property "hibernate.max_fetch_depth" is greater than 0.
> When hibernate.max_fetch_depth=0, the query works.
> If Derby is configured in embedded mode, the query works independently of the value of
hibernate.max_fetch_depth.
> On the Hibernate's documentation, the advised value of hibernate.max_fetch_depth is 3.
> Could you explain me if I made something wrong ?
> Thank you.
> Stephane

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