Postgresql

Can Dolphin be run on Postgresql?

Not without work - it's only written for MySQL.

A heavy lift or minor tweaks...

A lot.

Backticks ` for example are used in many of the queries throughout dolphin and 3'rd party modules. They are not supported in PostgreSQL. Date and time functions are different, quotes are handled differently, case sensitivity is handled different.

And most important at least to me is it is slower than MySql.

So i am curious, why would you want to use it. MySql may not be as feature rich as PostgreSQL, but it's lightweight and runs and performs faster than PostgreSQL.

PostgreSQL is mostly for people that are migrating from Oracle or MSSQL that need to retain many of the features.

Can't say. There are utilities to convert a MySQL database to PostgreSQL, but Dolphin itself will need to be modified to be able to use PostgreSQL. I remember someone once converted Dolphin 6.0/6.1 to MS SQL, but don't know how much work it was. Probably a lot.

Edit: Apparently a lot.

PostgreSQL is the default database on Mac OS X Server as of version 10.7. The standard version of Mac OS X includes only the PostgreSQL commandline client utilities. I am also interested in PostgreSQL because I want to run Dolphin on Mac server(s) someday.

If Apache by default and yet Nginx is also offered. Why not PostgreSQL as well.

So install MySQL on OS X server. You're not forced to use Apple's defaults.

It's not that simple. Dolphin doesn't have any code that specifically interacts with Apache beyond the rewrite rules, and that's a quick fix for Nginx. That's like asking why you can't run Dolphin on Ruby when PHP is already used. Everything database-related needs to be rewritten or updated to support it.

OS  6.5 64 bit can Dolphin run on that or would that cause issues?

Deano a programmer asked me to find out about this and Postgresql?

Do they mean CentOS? If so, you won't have any issues so long as Apache and co. are correctly configured.

Yes that is what I was talking about.  One last question I hope

PHP 5.4 will or will not cause issues?

Dolphin 7.1+, works fine. Older versions will have problems.

Dolphin 7.1.0; php 5.4.26, php-fpm, Nginx 5.12, MySQL 5.6 community server latest edition using the mysqlnd native driver; no problems that I can see.