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From "Bryan Pendleton (JIRA)" <j...@apache.org>
Subject [jira] Commented: (DERBY-208) Add support to retrieve lobs for Network Server by locator rather than matierializing the LOB
Date Thu, 23 Nov 2006 19:31:03 GMT
    [ http://issues.apache.org/jira/browse/DERBY-208?page=comments#action_12452307 ] 
            
Bryan Pendleton commented on DERBY-208:
---------------------------------------

> The new network client will always request to receive the LOB columns as LOB Locator
values instead of the data values bytes.

Is it always desirable for the client to request locator handling of LOBs? It seems
like you're trading off reduced/controlled memory handling (by using locators)
versus fewer client/server network message exchanges (by the current technique
of sending all the data from the server to the client in the initial data transfer).

That is, would there be situations in which a client might prefer not to use the locator 
technique, for performance reasons?


> Add support to retrieve lobs for Network Server by locator rather than matierializing
the LOB
> ---------------------------------------------------------------------------------------------
>
>                 Key: DERBY-208
>                 URL: http://issues.apache.org/jira/browse/DERBY-208
>             Project: Derby
>          Issue Type: New Feature
>          Components: Network Server
>    Affects Versions: 10.1.1.0
>            Reporter: Kathey Marsden
>
> Currently Network Server materializes all LOB objects.  LOB locator support is part of
the DRDA spec so could be added to network server.  See
> http://www.opengroup.org/dbiop/
> It is not clear if SQL Support for LOB locators would also be required.

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