Derby + Hibernate JPA 3.2.1 problem on entity with Blob/Clob
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Key: DERBY-3650
URL: https://issues.apache.org/jira/browse/DERBY-3650
Project: Derby
Issue Type: Bug
Components: Network Client
Affects Versions: 10.4.1.3
Environment: Mac OSX 10.4
JDK 1.5.0_13
Hibernate EntityManager 3.2.1
Reporter: Golgoth 14
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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