What are the downsides of running multiple instances of a database?

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The instances don't like to give up memory, so you essentially have to set the amount for each server. So you won't necessarily save there. You could perhaps limit one db/app from filling up the data cache, but if that's the case with one or two, you might be better off moving those to a new server anyway. 17 апр. 2009 г.

Can one database have multiple instances?

It appears as though you cannot have multiple databases running under one instance. Without OPS or RAC, you must have one instance for each database if you want to access data in that database. However, it is possible to access another database's data through an instance by using Database Links.

What are the differences between single and multi instance databases?

Therefore, a single-instance ERP solution is one that uses the ERP system for all your business operations—on either the front end or the back end. Multiple-instance ERP solutions are commonly used by businesses that operate globally to accommodate each country's needs or financial systems.

What is the benefit of having more than one instance connected to the database?

It is used for high availability of data, providing more security to the users (as each instance may not be shared with other user at some point), load-sharing of data if network traffic becomes high.

What are some of the benefits of using multiple and separate instances of SQL Server?

A second area in which multiple instances provide great benefit is server consolidation. Instead of having 10 machines to run 10 applications, a company can run all applications on one machine. With separate SQL Server instances, each application can still have its own administrator and its own users and permissions.

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