Obtaining the SQL statements, representing the diff between two databases, is a two step operation: Generate the XML "diff" changelog Generate SQL statements Example This example requires a liquibase.properties file (simplifies the command-line parameters): classpath=/path/to/jdbc/jdbc.jar driver=org.Driver url=jdbc:db_url1 username=user1 password=pass1 referenceUrl=jdbc:db_url2 referenceUsername=