You can upgrade the PostgreSQL database from version 12.4, 12.6, 3.5 or 14.6 to version 18.4. Version 18.4 offers improved security, performance, and scalability.
You can choose to upgrade at your own convenience by manually running scripts provided by Informatica. The scripts take a backup of the existing database version so that you can restore to the old database version in case of any upgrade issue.
For more information about upgrading the PostgreSQL database, see the following community article: