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https://issues.apache.org/jira/browse/DERBY-5151?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Mark Holster updated DERBY-5151:
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Attachment: sequence-no-cache.patch
> Sequence without cache
> ----------------------
>
> Key: DERBY-5151
> URL: https://issues.apache.org/jira/browse/DERBY-5151
> Project: Derby
> Issue Type: Improvement
> Components: SQL
> Reporter: Mark Holster
> Attachments: sequence-no-cache.patch
>
>
> Currently, a sequence in Derby always uses a pre allocating cache. I'm
> working on an usecase which requires a number to increase with a fixed value.
> The usecase fails after a restart because of the pre allocating cache.
> I've created a patch that adds the options CACHE | NO CACHE to the create
> sequence statement. When no cache is provided, the pre allocating cache size
> will be set to 1, which results in a "no cache sequence".
> I've followed the CYCLE | NO CYCLE code as much as possible. Tested it in my
> own app and it seems to work fine.
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