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Date: Thu, 13 Jan 2011 04:12:47 -0500 (EST)
From: "Knut Anders Hatlen (JIRA)" <jira@apache.org>
To: derby-dev@db.apache.org
Subject: [jira] Commented: (DERBY-4872) 'No suitable Driver' - Drivers don't
 get auto-loaded when only derbyrun.jar is in the classpath with ibm 1.6
 jvm.
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    [ https://issues.apache.org/jira/browse/DERBY-4872?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12981183#action_12981183 ] 

Knut Anders Hatlen commented on DERBY-4872:
-------------------------------------------

No, I don't think it's related to DERBY-2905. This issue is about IBM's JVM not detecting drivers in jar files that got pulled into the classpath by the manifest in some other jar file. It sounds like a JVM bug.

> 'No suitable Driver' - Drivers don't get auto-loaded when only derbyrun.jar is in the classpath with ibm 1.6 jvm.
> -----------------------------------------------------------------------------------------------------------------
>
>                 Key: DERBY-4872
>                 URL: https://issues.apache.org/jira/browse/DERBY-4872
>             Project: Derby
>          Issue Type: Bug
>          Components: JDBC
>    Affects Versions: 10.7.1.1
>         Environment: Windows XP, with IBM 1.6 SR8 (and Sun/Oracle's 1.6.0_21-b07 for comparison).
>            Reporter: Myrna van Lunteren
>            Priority: Minor
>         Attachments: ReproDerby4872.java
>
>
> With 1.6 jvms, doing DriverManager.getConnection() should autoload all drivers in the classpath. If I understand this correctly, it's based on what's in the manifest.mf, so it makes sense that you'd need to have jars, not just classes in the classpath.
> But, with ibm 1.6 jvm, if I have only derbyrun.jar in the classpath, I get the message 'No suitable driver' with both the client, and the embedded driver. 
> However, if I add derby.jar to the classpath, the error goes away for the embedded driver, and if I add derbyclient.jar, it goes away for the client driver.

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