SharePoint 2007: Upgrade to SP3 fails with “Transaction log for SSP_Search_DB is full”

During the upgrade of SharePoint 2007 from SP2 to SP3, the “SharePoint Products and Technologies Configuration Wizard” showed the following error message: This happened at Task 8 during the upgrade of the SQL databases. The error message above was not very helpful: “The following contains detailed information about the failure: Failed to upgrade SharePoint Products and Technologies” The upgrade.log in the 12 hive log directory shed some more light on it: [SearchDatabaseSequence] Read more [...]