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https://issues.apache.org/jira/browse/DERBY-2737?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12500436
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Daniel John Debrunner commented on DERBY-2737:
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sorry meant, if permission to write the property is not granted.

> Change documentation on permissions needed to include read/write for  system 
> property derby.storage.jvmInstanceId 
> ------------------------------------------------------------------------------------------------------------------
>
>                 Key: DERBY-2737
>                 URL: https://issues.apache.org/jira/browse/DERBY-2737
>             Project: Derby
>          Issue Type: Sub-task
>          Components: Documentation
>            Reporter: Kathey Marsden
>            Priority: Minor
>
> Dual embedded boot of a database from different classloaders may cause 
> corruption.  In order to prevent this, Derby requires read/write access to 
> the System Property 
> derby.storage.jvmInstanceId.  The following permission needs to be granted in 
> the policy file whether or not custom classloaders are being used
> permission java.util.PropertyPermission "derby.storage.jvmInstanceId", "read, 
> write";

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