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Improve the accuracy of "Database Usage(%)" value displayed in Database property dialog

Sometime we found that although the "Database Usage(%)" value was nearly 100% displayed in Database property dialog, but after executed compact -B or compact -C for that database, the size of the database was decreased nearly 20%.


We understand that the value of "Database Usage(%)" is calculated by

(The number of Used Blocks) / (The number Total Blocks) , when there are many white space in used blocks, this value is not accurately reflect the real usage ratio.


But we still wish you could improve the accuracy of "Database Usage(%)" value in future release.

  • Guest
  • Oct 20 2022
  • Needs Clarification
  • Attach files
  • Admin
    Thomas Hampel commented
    21 Oct, 2022 01:48pm

    We'd like to undertand the problem behind this idea. Can you explain more about the business issue?

  • Admin
    Thomas Hampel commented
    20 Oct, 2022 03:43pm
    Squeezing the NSF size is counterproductive. Leave some whitespace in the database. Instead of compcting -C just reorganize the whitespace to be at the end of the file. Only reduce the file size if you really really need to do it, e.g. if whitespace >20% (using -S 20 prameter for compact)