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From "Kathey Marsden (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (DERBY-5096) DisconnectException: "Connection was refused because the database DB was not found" when creating db for first time
Date Tue, 30 Aug 2011 17:28:37 GMT

    [ https://issues.apache.org/jira/browse/DERBY-5096?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13093922#comment-13093922
] 

Kathey Marsden commented on DERBY-5096:
---------------------------------------


Looking again at this issue, I think it is actually a usage issue, external to Derby and to
getCanonicalPath.
Here the user is using the System Property  "user.home")  which has CAPS 
/home/SHENDRIC where the actual directory does not.

When the user called getCanonicalPath() on user home, e.g.

, new File(new File(System.getProperty("user.home")).getCanonicalFile, "productsubdir"); 

getCanonicalPath actually corrected the casing properly.  I wonder if passed the whole string,
if getCanonicalPath would resolve the whole thing properly.

Also I would like to look at the actual exception and see what call is actually failing with
the uppercase path and whether that should fail on iseries which generally ignores case.


> 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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