Reducing LOB_DATA Space

  • We archived roughly 12million out of 16 million rows of text in our DB. More or less setting the text fields to say "Archived". When I analyze the dm_db_index_physical_stats against this table, the LOB_DATA is around 147GB. I've reorganized the index, run DBCC CLEANTABLE, and still nothing.

    So the LOB_DATA appears to be hanging out in the file structure, and doesn't want to be reduced. I understand that this is the case when you alter Text fields (as we did), but I thought that reorganizing indexes and DBCC CLEANTABLE was supposed to fix this.

    Any ideas anyone?

  • Do you happen to have "read_committed_snapshot"=ON for the database in question.

    I have something of the same problem (I delete records though) and cannot get rid of the blob data.

    If i change the read_committed_snapshot to OFF the problem disappears

    Best regards

    /Jesper

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