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Merge pull request #3260 from EnterpriseDB/content/epas/14/upgrade
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Updated the Upgrade EPAS considerations
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drothery-edb authored Nov 2, 2022
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title: "Upgrade considerations"
---

The following limitations apply to upgrading EDB Postgres Advanced Server:
Consider the following when upgrading EDB Postgres Advanced Server:


- The `pg_upgrade` utility cannot upgrade a partitioned table if a foreign key refers to the partitioned table.
- If you are upgrading from the version 9.4 server or a lower version of EDB Postgres Advanced Server, and you use partitioned tables that include a `SUBPARTITION BY` clause, you must use `pg_dump` and `pg_restore` to upgrade an existing EDB Postgres Advanced Server installation to a later version of EDB Postgres Advanced Server. To upgrade, you must:
Expand All @@ -11,3 +12,4 @@ The following limitations apply to upgrading EDB Postgres Advanced Server:
3. Use `pg_upgrade` to upgrade the rest of the EDB Postgres Advanced Server database to a more recent version.
4. Use `pg_restore` to restore the subpartitioned table to the latest upgraded EDB Postgres Advanced Server database.
- If you perform an upgrade of the EDB Postgres Advanced Server installation, you must rebuild any hash-partitioned table on the upgraded server.
- If you are using an ODBC, JDBC, OCI, or .NET driver to connect to your database applications and upgrading to a new major version of EDB Postgres Advanced Server, upgrade your driver to the latest version when upgrading EDB Postgres Advanced Server.

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