[hibernate-issues] [Hibernate-JIRA] Commented: (HHH-2244) Problem with data type 'Blob'
Xavier Bugaud (JIRA)
noreply at atlassian.com
Thu Nov 16 09:19:04 EST 2006
[ http://opensource.atlassian.com/projects/hibernate/browse/HHH-2244?page=comments#action_25323 ]
Xavier Bugaud commented on HHH-2244:
------------------------------------
If JDBC consider that a blob must be part of a row, then you're right : this problem must be solved outside Hibernate (with a trigger or by running vacuumlo periodicaly).
If not, Hibernate has to remove the blob when needed.
Can you please tell me where in the JDBC specs is written that a blob must be part of the row ? I can't find something clear about that in the JDBC API or in the Sun JDBC documentation.
Regards,
> Problem with data type 'Blob'
> -----------------------------
>
> Key: HHH-2244
> URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-2244
> Project: Hibernate3
> Type: Bug
> Environment: Hibernate version:3.2
> DB: postgresql 8.1
> Reporter: Gulshanrai BABAJEE
>
>
> I have created a table in which I have a field of type BLOB which I store pictures. I insert a picture, note the oid generated. Then I do the following select statement on table 'pg_largeobject' (system table) : select * from pg_largeobject where loid = 'oid of my picture'. I found the oid.
> Then I update my picture. Its oid has been changed. I now make another select from table 'pg_largeobject' where loid = 'my OLD oid' and I was surprised to see that the old oid is STILL in the table. So I conclude that each time I update a picture from my table. The old oids are still there and eventually my database is increasing in size.
> Is this not a bug in hibernate?
> thanks in advance
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