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https://issues.apache.org/jira/browse/DERBY-5096?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13005719#comment-13005719
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Kathey Marsden edited comment on DERBY-5096 at 3/11/11 9:47 PM:
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It would be great to see a fix in the JVM's with the problem , so I think it
would be worthwhile to report that you have hit the problem to the various
JVM support organizations if you have support.
I haven't looked into a possible workaround in Derby, but since it seems to
affect not only OS/400 but also other platforms running on VMWare, it seems
like it would be worthwhile to look into working around the problem in DERBY if
possible. If you would like to work on that, I am sure members of the
community can point you to the code area in question.
For the platforms, one option might be to have new class OsName.java that has
String constants for all the os.name values and then just have an
isPlatform(String) method in BaseTestCase.
was (Author: kmarsden):
It would be great to see a fix in the JVM's with the problem , so I think
it would be worthwhile to report that you have hit the problem to the
various JVM support organizations if you have support.
I haven't looked into a possible workaround in Derby, but since it seems to
affect not only OS/400 but also other platforms running on VMWare, it seems
like it would be worthwhile to look into working around the problem in DERBY if
possible. If you would like to work on that, I am sure members of the
community can point you to the code area in question.
> DisconnectException: "Connection was refused because the database DB was not
> found" when creating db for first time
> -------------------------------------------------------------------------------------------------------------------
>
> Key: DERBY-5096
> URL: https://issues.apache.org/jira/browse/DERBY-5096
> Project: Derby
> Issue Type: Bug
> Components: Network Server
> Affects Versions: 10.7.1.1
> Environment: System: OS/400 V7R1M0 on PowerPC; JVM: IBM J9 VM 2.4
> (consistently reproducible).
> But also: Windows 2008 R2 on VMWare and Windows 7 64 bit with Sun VM (1.6)
> too (but not as consistently reproducible)
> Reporter: Steven Hendrickx
> Attachments: TestLowerCaseTraversal.java, getconnection_reproduce.zip
>
>
> A process starts derby as network server (new NetworkServerControl, start)
> and waits for derby to respond (retry ping until success). After the server
> has started, the same process makes a connection with
> DriverManager.getConnection().
> The first time this process runs, this will always fail with
> "SQLNonTransientConnectionException: The connection was refused because the
> database Flows;create=true was not found." However, at the same time,
> "derby.log" and "Flows" directory are created in the derby home. The "Flows"
> directory contains "log", "seg0", "tmp", "db.lck", "service.properties", etc
> ...
> The second time the process is started, the connection will succeed and the
> "Flows" database can be used successfully. From now on, every start will be
> successful. After cleaning the derby home directory, you get the exception
> again after the first start.
> The attachment contains a Java program (DerbyGetConnection.java) that
> reproduces this problem consistently on our OS/400 V7R1M0 with IBM J9 VM.
> Probably this may happen on other systems too (Win7), but we were unable to
> reproduce it there (on my machine with Win7, this same program ran successful
> every run; might be a threading or I/O issue that occurs easily on slower
> hardware?).
> The attachment contains also derby tracing ("derby.drda.traceAll") and
> logging/tracing of the DriverManager.
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