# derby.database.propertiesOnly

#### Function

When set to true, this property ensures that database-wide properties cannot be overridden by system-wide properties.

When this property is set to false, or not set, database-wide properties can be overridden by system-wide properties (see "Precedence of properties" in the Java DB Developer's Guide).

This property ensures that a database's environment cannot be modified by the environment in which it is booted.

This property can never be overridden by system properties.

#### Default

False.

#### Example

    CALL SYSCS_UTIL.SYSCS_SET_DATABASE_PROPERTY(
        'derby.database.propertiesOnly','true')

#### Dynamic or static

This property is dynamic; if you change it while Derby is running, the change takes effect immediately. For information about dynamic changes to properties, see Dynamic and static properties.

Parent topic: Derby properties
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