[jira] Updated: (OPENJPA-1294) Nested JDBC calls fail for certain database

["Donald Woods (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/OPENJPA-1294?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Donald Woods updated OPENJPA-1294:
----------------------------------

    Fix Version/s:     (was: 2.0.0-M3)

> Nested JDBC calls fail for certain database
> -------------------------------------------
>
>                 Key: OPENJPA-1294
>                 URL: https://issues.apache.org/jira/browse/OPENJPA-1294
>             Project: OpenJPA
>          Issue Type: Bug
>          Components: jdbc, kernel, query, sql
>    Affects Versions: 2.0.0-M3, 2.0.0-M4, 2.0.0
>         Environment: MySQL
>            Reporter: Pinaki Poddar
>            Assignee: Pinaki Poddar
>             Fix For: 2.0.0-M4, 2.0.0
>
>
> Some use cases require a new database connection to perform operation because the current connection is busy/open.
> Typical use case is asking for size of the result set (obtained by a SELECT COUNT(*) query) while the original result set is still being open.
> Some databases (e.g. MySQL as per observation) do not allow the new COUNT query on the same connection because the original result set is still open.
> A JDBCStore.getNewConnection() is added -- but use it with caution, remember to close it and use it only when required.

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