Best blocksize for large data loads?

  • From: "Michael Fontana" <mfontana@xxxxxxxxx>
  • To: <oracle-l@xxxxxxxxxxxxx>
  • Date: Mon, 12 Jul 2004 15:17:01 -0500

I have a large direct sqlldr task, and am interested in experimenting
with alternate (larger) blocksizes as available in Oracle9i release 2 to
speed it up.

I assume the larger the blocksize, the faster the blockformatting and
subsequent loading would result.

Does anyone have any experience which would confirm this?

Also - if you begin using the alternate buffer cache options, and have
been running with 8k blocksizes, I wonder if all unspecified tablespaces
would continue to use that default?

Michael Fontana
Sr. DBA
NTT/Verio


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