Migrating PostgreSQL DB from AWS to Alibaba Cloud
You can downgrade postgresql database from the command line.

Simply extract the database with a

pg_dump --host=... --port=... --dbname=.... --user=.... &gt;dump


command. Then you will have your database in the file dump in your local directory.

Then insert the dump into your new database with the command

psql --host=... --port=... --dbname=.... --user=.... &lt;dump


It won't work at first. Typically, you will have syntax errors or similar. But get a good text editor, and edit it all out, until it won't be clean.