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From Claus Köll (JIRA) <j...@apache.org>
Subject [jira] Commented: (JCR-2679) Lock Problem when accessing JCR
Date Wed, 01 Sep 2010 11:51:56 GMT

    [ https://issues.apache.org/jira/browse/JCR-2679?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12905001#action_12905001
] 

Claus Köll commented on JCR-2679:
---------------------------------

Hi,

>We are quite reluctant to use normal jdbc connection as we need to use the transactionnal
XA datasource provided by Jboss. 

Jackrabbit must not use a transactional XA DataSource taht is part of the XA Transaction for
its DB Connection.
The DataSource must not be involved in the XA Transaction because Jackrabbit itself is the
XA Resource.
So please test with a normal jdbc connection in your repository/workspace.xml file.

greets
claus

> Lock Problem when accessing JCR
> -------------------------------
>
>                 Key: JCR-2679
>                 URL: https://issues.apache.org/jira/browse/JCR-2679
>             Project: Jackrabbit Content Repository
>          Issue Type: Bug
>          Components: jackrabbit-jca, transactions
>    Affects Versions: 1.5.3, 1.6.2
>         Environment: JBOSS 4.2.3 on jre 1.5.0_15 with XA transactions and Oracle10g
>            Reporter: Laurent Prevosto
>         Attachments: repository-prod.xml, thread_dump.txt, workspace.xml
>
>
> Hi,
> We're using Jackrabbit 1.6.2 as an internal CMS in an application we developped.
> It runs in JBOSS 4.2.3 on jre 1.5.0_15 with XA transactions and Oracle10g
> We have about 15 users adding / deleting files in the repository.
> 30 others just do read only CMS access and other stuff.
> Things work fine except that sometimes, suddenly everything gets stuck and all we have
left is those kind of errors :
> [org.apache.jackrabbit.core.query.lucene.NodeIteratorImpl] : Exception retrieving Node
with UUID : XXXXXXX-XXX-etc: javax.jcr.ItemNotFoundException: XXXXXXX-XXX-etc
> All our JCR connections are now dead. If we restart JBOSS, things get back to normal,
until the next crash.
> It looks like the bug usually happens when this kind of sequence takes place (though
that may not be the only one) :
> XA transaction begins
> filenode1 gets deleted
> filenode2 gets deleted
> other oracle stuff takes place... and fails
> XA rollbacks.
> => JCR is dead.
> At that point, "touching" the datasource has it reinitialised by JBOSS but unfortunately
the lock is still there : JBOSS has to be restarted.

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