Agents, SLA, and AQM

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·         Agent is internal background process or requestor, which is gets associated with

1)      Schedule

2)      Activity

3)      Access Group

4)      Mode.

·         Agents wakes up at the schedule time and executes its associated activity.

·         When an agent wakeup, it will run on the associated access group.

·         PRPC has a predefined master agent ‘System Pulse’, which wakes up all the user created agents at their schedule time.

·         Agent is an instance of Rule-Agent-Queue whereas agent schedule is an instance of Data-Agent-Queue.

·         Modes of Agent: - There are 3 different modes available.

1)      Legacy

2)      Advanced

3)      Standard.

·         Legacy: - This mode is been deprecated from PRPC version 5.4.

·         Advanced: - When an advanced wakes up at schedule time it will directly executes agent activity without bothering about Agent Queue Items.

·         Usually we will create advanced without applying AQM (Auto Queue Management) and these agents will be configured to run on Single Node.

·         In an advanced Agent Work Object locking and Transactional Commit must be taken care by our self.

·         Standard Agent: - Standard Agent will be applied with AQM.

AQM (Auto Queue Management)

·         This program is responsible for instructing the agent weather to execute associated agent activity or not.

·         When the Queue Items are there, standard agent will execute agent activity else it will not execute activity thus go to sleep.

·         Queue Items can be put into agent queue table PR_SYS_QUEUES by using the method/activity

·         Queue-For-Agent/QueueForAgent.

·         When the standard agent wake it will execute the agent activity ‘N’ number of times (with status=scheduled) where ‘N’ is the number of Queue Items in the PR_SYS_QUEUS table.

·         A queue is associated with the below status values.

·         Scheduled: - This is initial status when a queue is been inserted into the table and which gets process by agent during next run.

·         Now-Processing: - This means that the Queue is picked by agent and is being processed.

·         Broken-Queue: - When Queue items fails in its processing, the status will be updated to

Broken-Queue.

·         *Standard agents can be configured to run on multiple nodes whereas advanced agent we generally configure on a single node.

·         Standard agents used to process WOs whereas advanced agents are used to perform a raw functionality (which does not involve work object processing).

SMA (System Management Application)

·         Using SMA, we can manage

§  Memory

§  Agents

§  Requester

§  Listener

                              Cache etc.