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blob deletion

From: Daniel Wisser <daniel.wisser_at_isis-papyrus.com>
Date: Tue, 03 Dec 2002 01:49:11 -0800
Message-ID: <F001.0051076C.20021203014911@fatcity.com>


hi gurus!

can anyone answer this (maybe newbeeee question:)

i have a table with a BLOB column. this table is stored in a seperate tablespace, in which there are no other data than that of this very table.

suppose now i have one row in this table. if i delete this row, the blob is also deleted and tablespace increases.

on a different DB with the very same data, the DBA claims that deleting the row with the BLOB does delete the row from the table, but the BLOB remains in the tablespace and the diskspace he takes cannot be reused.

if i create my tablespace (without auto-extend) sized 1 MB and i insert a row with one BLOB of size 800 KB, the next time i can't insert another row with a BLOB of that size. -> fine. if i delete the row, i can insert another row, again! -> fine.

but the DBA of the other DB claims: if he deletes one row, he cannot insert another row, because the BLOB is not acutally deleted.

? ? ?

thx daniel
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Author: Daniel Wisser
  INET: daniel.wisser_at_isis-papyrus.com

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