Service can start perfectly. I only want be sure about shared_buffers parameter. What I set there, is it memory that postgresql will use (will allocate) initially (when it is started) or memory until that postgresql can reach of the server?
If you can start the databased service and connect to it, the best way to check the version is:
SELECT version();
If you can't start the service, you can do this:
$ postgres --version
(You may need to specify the path to the postgres executable.)
Either way you should be able to determine the minor release. It is always a good idea to keep up-to-date on minor releases (where the version number only changes to the right of the second dot), because in PostgreSQL we only include fixes for serious bugs and security vulnerabilities in minor releases, not new features. See this page for additional discussion of the issue:
