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From "Julius Stroffek (JIRA)" <j...@apache.org>
Subject [jira] Commented: (DERBY-2220) Transaction executed throught XAResource will held locks forever (until commit is executed) and also after the application terminates.
Date Mon, 08 Jan 2007 15:28:27 GMT

    [ https://issues.apache.org/jira/browse/DERBY-2220?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12463055
] 

Julius Stroffek commented on DERBY-2220:
----------------------------------------

The problem is in the org.apache.derby.impl.drda.Database class.

The function close() contains the following code:

			if ((conn != null) && !conn.isClosed())
			{
				if (! forXA)
				{
					conn.rollback();
				}
				conn.close();					
			}

Thus, the rollback() is not executed for XA connection. Anybody knows the reason why?

> Transaction executed throught XAResource will held locks forever (until commit is executed)
and also after the application terminates.
> --------------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: DERBY-2220
>                 URL: https://issues.apache.org/jira/browse/DERBY-2220
>             Project: Derby
>          Issue Type: Bug
>    Affects Versions: 10.3.0.0
>         Environment: Solaris Nevada build 49, Sun's JDK1.6
>            Reporter: Julius Stroffek
>         Assigned To: Julius Stroffek
>         Attachments: XATranTest.java, xxx.sql
>
>
> Using this piece of code derby will not release a table lock of 'dummy' table.
>             String query = "insert into dummy (field1) values ('" + Integer.toString(value)
+ "')";
>             XAConnection xaConnection = createXAConnection("jdbc:derby://localhost:1527/TestDB",
"", "");
>             XAResource xaResource = xaConnection.getXAResource();
>             conn = xaConnection.getConnection();
>             
>             Xid xid = createXid(value);        
>             xaResource.setTransactionTimeout(10);
>             xaResource.start(xid, XAResource.TMNOFLAGS);
>             
>             Statement statement = conn.createStatement();
>             statement.execute(query);        
>             
>             // terminate the client application
>             // this will not release any locks
>             System.exit(0);

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