[ https://issues.apache.org/jira/browse/JCR-3258?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13491266#comment-13491266 ] 

Jukka Zitting commented on JCR-3258:
------------------------------------

We need autocommit since Jackrabbit is using long-lived database connections. Without autocommit we'd have to add an explicit COMMIT statement even after each SELECT query as otherwise databases with high transaction isolation levels would have to keep a transaction open potentially indefinitely.
                
> JTA & BundleDbPersistenceManager in autocommit mode
> ---------------------------------------------------
>
>                 Key: JCR-3258
>                 URL: https://issues.apache.org/jira/browse/JCR-3258
>             Project: Jackrabbit Content Repository
>          Issue Type: Bug
>          Components: jackrabbit-core
>    Affects Versions: 2.4
>         Environment: Postgresql 8.4
> BTM 2.1.2
> Jencks 2.0
>            Reporter: YP
>            Priority: Blocker
>         Attachments: jca.log, non-jca.log
>
>
> Neither JTA nor JCA with JTA works because of the exception 'java.sql.SQLException: autocommit is not allowed on a resource enlisted in a global transaction' from BTM,
> issue JCR-1253 has explanation of why keep autocommit enabled, but there is always error when autocommit mode is true.

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