How can the "Deltalog" be "installed"?

Migrating magento >> 2.1.0

Migration Tool Version 2.1.0

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  • i get this problem too. Do you resolve it? – strauss Aug 26 '16 at 9:00
  • I got the same issue. Here I use live DB dumb to migrate data and after migration, i have copied all m2_db to latest dumb of live and run delta migration step with latest live db. Then the same error occurred. Do anyone fix this issue? – Divya Muralidharan Aug 21 '18 at 6:26

In order to run bin/magento migrate:delta step you first need to run the bin/magento migrate:data step because it is in this step where the Data Migration Tool creates triggers in the source database.

Those triggers will be used to pull only the changes made in Magento 1 since the last time you migrated data.

Data Migration Tool source table prefix

For more information have a look to the Official Documentation.

Hope it helps.

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