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Peaceful Coexistence: Multiple SAS® Releases

It is possible to run multiple SAS®9 releases simultaneously on the same computer. It is also possible to run SAS 9 on the same computer as SAS 8.2. This topic lists all known issues, to help you avoid any conflicts.

Data sets and other SAS files: SAS strives wherever possible to support cross-release compatibility.

Syntax (PROCs, DATA steps, macros, and so forth): You can use SAS or SCL code across multiple releases. However, behavior can change in later releases, and new syntax is introduced that is not supported in earlier releases. Research the known issues for Base SAS and other SAS software (

Installation and configuration:

Operating environment:

Invoking SAS:

If you encounter problems in your deployment, contact SAS Technical Support ( for assistance.