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.
Aggregate registry variables
Use an aggregate registry variable to group
several registry variables as a configuration that is identified by
another registry variable name. Each registry variable that is part
of the group has a predefined setting. The aggregate registry variable
is given a value that is interpreted as declaring several registry
variables.
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.