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I am moving a schema from one server to another using pg_dump + pg_restore + drop schema cascade. I need to know that no applications are writing to it (or at least that the writes will fail) during this process to avoid losing data.

At the moment I am renaming the schema before starting the dump. Is that sufficient to prevent writes? What if a large batch insert is busy when I rename the schema? Will that still complete?

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You can REVOKE access from that schema, but I am affraid the application will have some unwanted effects. PostgreSQL has fine tuned permission administration. And later you can GRANT access to that schema.

  • Can I do that (and restore access) as a 'normal' user? – David Tinker Nov 18 '14 at 13:35
  • You can if you are owner of the schema (creator), otherwise you need to be super user or admin. – Mladen Uzelac Nov 18 '14 at 14:02

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