You can use the following configuration parameters to turn on or off directives
that the database server encounters.
Configuration Parameter
Description
DIRECTIVES
Determines whether the optimizer follows all directives.
The default value is 1, indicating the optimizer follows all directives.
For more information, see the IBM Informix Dynamic Server Performance Guide.
EXT_DIRECTIVES
Enables an external directive. For more information, see
the IBM Informix Dynamic Server Administrator's Reference or the IBM Informix Dynamic Server Performance Guide.