Manual:$wgExportMaxHistory

From Linux Web Expert

<translate> Import/Export</translate>: $wgExportMaxHistory
Requests using "Special:Export" for pages with a revision history higher than set will be rejected.
<translate> Introduced in version:</translate>1.7.0 (r15101)
<translate> Removed in version:</translate><translate> still in use</translate>
<translate> Allowed values:</translate>(integer)
<translate> Default value:</translate>0

Details

If set to a positive nonzero integer, requests using "Special:Export" for pages with a revision history of more revisions than set with this configuration parameter will be rejected. There is no limit if set to 0 (default). On big wikis exporting pages with a lot of revisions could potentially threaten operational stability.

See also