<p>The number of milliseconds after which WebLogic Server invalidates
its cache of SNMP security keys. Setting a high value creates a risk
that users whose credentials have been removed can still access
SNMP data.</p>
<p>An SNMP security key is an encrypted version of an SNMP
agent's engine ID and an authentication password or privacy password.
WebLogic Server generates one security key for each entry
that you create in the SNMP credential map. When a WebLogic Server
SNMP agent receives an SNMPv3 request, it compares the key that is in
the request with its WebLogic Server keys. If it finds a match, it
processes the request. The SNMP agent also encodes these keys in its
responses and notifications. (You configure which keys are encoded
when you create a trap destination.)</p>
<p>Instead of regenerating the keys for each SNMPv3 communication,
WebLogic Server caches the keys. To make sure that the cache contains
the latest set of SNMP credentials, WebLogic Server periodically
invalidates the cache. After the cache is invalidated, the next time an
SNMP agent requests credentials, WebLogic Server regenerates the cache.</p>
<p>Note that making a change to the credential map does not automatically
update the cache. Instead, the cache is updated only after it has been
invalidated.</p>
<p>For example, if you update a privacy password in an existing entry in
the SNMP credential map, the SNMP agent is not aware of the new password
until the key cache is invalidated and regenerated. An SNMP user with
the old security password can still access WebLogic Server data until
the cache is invalidated.</p>
<p>You can invalidate a key immediately instead of waiting for this
invalidation interval to expire. </p>
(Interface=weblogic.management.configuration.SNMPAgentMBean Attribute=getLocalizedKeyCacheInvalidationInterval)