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blob compression, remotecompression question |
Mon, Nov 27 2006 1:59 PM | Permanent Link |
"Lucian" | Hi,
If I have a BLOB field set to compressed and also set the property RemoteCompression of a session, how does that actually works when the BLOB is sent out from the server? It will be a waste of CPU power to compress the compressed BLOB, right? So how does the server handle this scenarion? -- regards, Lucian |
Tue, Nov 28 2006 11:56 AM | Permanent Link |
Tim Young [Elevate Software] Elevate Software, Inc. timyoung@elevatesoft.com | Lucian,
<< If I have a BLOB field set to compressed and also set the property RemoteCompression of a session, how does that actually works when the BLOB is sent out from the server? It will be a waste of CPU power to compress the compressed BLOB, right? So how does the server handle this scenarion? >> Actually the BLOB is decompressed when it is read on the server, compressed for the transport over the wire, and then decompressed on the client for access. It's on our list to address the decompress/compress step on the server, but it's a little harder than you might think because one is completely separate from the other in terms of the engine code, and there are cases on the database server when opening compressed BLOBs *does* require decompression, such as with triggers or server-side procedures. -- Tim Young Elevate Software www.elevatesoft.com |
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