我应该安装32位数据库还是64位数据库？

Question

(I've read a lot about 64-bit versus 32-bit OS/Apps, but this question is specifically in regards to databases.)

I'm trying to understand the pros and cons of 32-bit versus 64-bit databases, and namely, under what conditions that it starts to make sense to use 64-bit installations.

The database systems that I am interested in are: SQL Server 2008, MySQL, and PostgreSQL 9.0.

I have read that pre-9.0 versions of PostgreSQL only comes in 32-bit for Windows, and this article about running 32-bit PostgreSQL on 64-bit Windows clears up some of my confusion, but I'm looking for more info.

When would I benefit from using 64-bit databases (ie database size/disk space, available system memory, types of data sernarios that are known to benefit from it, which database engine being used, etc.)?

Answer 1

假设您具有支持64位的操作系统和处理器，则64位最重要的优势是可以使用超过4GB的内存。