Past 300 users — publishing how the tool is actually used, across 46 countries
Open DUMP Viewer for Oracle database, released in February 2026, has passed 300 users. Thank you to everyone using it.
This is a tool for opening Oracle dump files — data that can be lost outright if handled badly. We think it is the developer's job to give you something concrete on which to judge whether the tool can be trusted. So we are publishing what we can about how it is used.
Every figure below is aggregated from existing registration records and licence check-ins. Nothing new was instrumented for this article.
Where we are (as of 26 July 2026)
| Metric | Value |
|---|---|
| Total users | 307 |
| Licences issued | 313 |
| Active machines | 282 |
| Countries and regions | 46 |
| Total launches | 566 |
From 1 to 307 in five months
| Month | New | Total |
|---|---|---|
| February 2026 | 1 | 1 |
| March 2026 | 18 | 19 |
| April 2026 | 33 | 52 |
| May 2026 | 61 | 113 |
| June 2026 | 85 | 198 |
| July 2026 | 109 | 307 |
Not only is the count growing — the monthly increase itself is growing. July alone brought 109 people, six times March. July is still in progress, so the figure will rise further by month end.
46 countries, and 84% of use is outside Japan
This was the biggest surprise. The tool is developed in Japan, in Japanese, yet only about 16% of use is domestic — the other 84% comes from abroad.
| Country / region | Licences |
|---|---|
| China | 100 |
| Japan | 42 |
| United States | 24 |
| Brazil | 9 |
| Italy | 8 |
| India / Saudi Arabia | 6 each |
| United Kingdom / Germany | 5 each |
| Other (34 countries) | 46 |
Needing to open an Oracle dump file without an Oracle installation appears to be a problem that does not respect borders.
How the country is determined
The IP address recorded during a licence check-in is converted to a country code and counted. The IP address itself is never published, and no location more precise than the country is determined. Countries with few users are combined into an "Other" total — publishing a figure of one or two could allow an individual to be inferred.
Environment: 67% on Windows 11, 75% on the current release
Of the 282 active machines, 189 (67%) run Windows 11 and 91 (32%) run Windows 10. For the application itself, the current 4.1 series accounts for 212 machines (75%).
Updates reaching users also means few people are still running into bugs that were fixed long ago.
Use at work, and a note on licence types
Of the 282 active machines, 49 (17.4%) are joined to an organisation's Active Directory domain — that is, the tool is being used inside real corporate networks, not only for personal projects. There are 14 registrations from educational institutions, 5 from companies, and 18 that supplied an organisation name.
There is something we should say plainly, though: we do see the free Personal licence being used on domain-joined machines. The Personal licence is for individual use; use at work requires a Business plan.
When we detect this, we contact the holder individually to review their plan — 44 times to date. We never publish who was contacted. This is not about blame; it is the routine housekeeping that keeps the tool maintainable.
If this applies to you, please consider changing your plan from the licence registration page.
What we deliberately do not publish
- Names, email addresses, organisation names
- Licence keys and machine identifiers
- IP addresses (used only to determine the country; never published)
- Who received a plan review notice
Our Privacy Policy was revised on 1 August 2026 to state exactly what the application sends and what it is used for.
Published continuously
The figures here are a snapshot. The current numbers are always available on the usage statistics page, which we maintain alongside the financial report as a standing record of how this project is actually run.