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https://issues.apache.org/jira/browse/DERBY-4314?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12863444#action_12863444
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Kathey Marsden commented on DERBY-4314:
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I will look at the 7b-combine patch and commit. Thanks Lily and Kristian for
this collaborative effort !
> 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,
> 10.6.1.0
> Reporter: Kathey Marsden
> Priority: Minor
> Attachments: DERBY-4314-2.diff, DERBY-4314-3.diff, DERBY-4314-5.diff,
> derby-4314-6a-initial_piggybacking.diff,
> derby-4314-6a-initial_piggybacking.stat,
> DERBY-4314-6b-combinepiggybacking.diff, DERBY-4314-6c-combineaftermerge.diff,
> derby-4314-6d-handle_xa.diff, DERBY-4314-7-withoutpiggybacking.diff,
> DERBY-4314-7b-combine.diff, DERBY-4314.diff, ReproIsoLost.java,
> TestConnReuse.java, utilXid.java
>
>
> 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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