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https://issues.apache.org/jira/browse/DERBY-4314?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12740335#action_12740335
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Kathey Marsden commented on DERBY-4314:
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I posted a program to DERBY-4343 which would be interesting to run with this
patch with tracing on to understand the server round trips in various
scenarios. Of course the assertion failure would have to be fixed first. I am
curious though if this patch might actually fix that bug.
> With derby client setTransactionIsolation executes and commits even if
> isolation has not changed
> -------------------------------------------------------------------------------------------------
>
> Key: DERBY-4314
> URL: https://issues.apache.org/jira/browse/DERBY-4314
> Project: Derby
> Issue Type: Improvement
> Components: JDBC, Network Client
> Affects Versions: 10.1.3.1, 10.2.2.0, 10.3.3.0, 10.4.2.0, 10.5.1.1,
> 10.6.0.0
> Reporter: Kathey Marsden
> Priority: Minor
> Attachments: DERBY-4314-2.diff, DERBY-4314-3.diff, DERBY-4314-5.diff,
> DERBY-4314.diff
>
>
> With in EmbedConnection.setIsolation() we have a check to see if the
> isolation level is the same and if so just return without doing a commit:
> public void setTransactionIsolation(int level) throws SQLException {
> if (level == getTransactionIsolation())
> return;
> with org.apache.derby.client.am.Connection we have no such check. It would be
> good if the client driver acted like embedded.
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