Firefox maintenance – vacuum the sql database
August 24, 2009 by Steve · Leave a Comment
# Open the Error Console: Tools menu/Error Console
# In the Code text box paste this (it’s a single line):
Components.classes["@mozilla.org/browser/nav-history-service;1"]
.getService(Components.interfaces.nsPIPlacesDatabase).DBConnection
.executeSimpleSQL("VACUUM");
# Press Evaluate. All the UI will freeze for a few seconds while databases are VACUUMed
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