Registry and environment variables

Registry and environment variables control your Db2® database environment.

Environment variables and the profile registries
Environment and registry variables control your Db2 database environment. Use the Db2 profile registries to view and update information about variables and instances.
Profile registry locations and authorization requirements
The Db2 profile registries have different locations and authorization requirements on each operating system. Authorization is required to update the values of variables in each profile registry.
Setting registry and environment variables
Most environment variables are set in the Db2 database profile registries by using the db2set command. The few variables that are set outside the profile registries require different commands depending on your operating system.
Db2 registry and environment variables
Db2 database products provide a number of registry variables and environment variables that you might need to know about to get up and running.