Atlas — Standard classes derived from the System- base class

The table below lists standard System- classes you may encounter.

These classes are reserved. You cannot define classes derived from the System- base class.

Class	Description	More
System-CachedConclusion	Cache for Java objects corresponding to field value rules, property rules (not property values), property alias rules and class rules.	conclusion cache
System-Declare-Changes	Supports execution of Declare Expression rules. Corresponds to the pr_sys_decchg table.
System-Locks	Contains facts about a lock.	Understanding object locking
System-Queue-DefaultEntry	Supports queued requests for agent processing by Standard agents.	Queue-for-Agent method
System-Queue-ExecutionRequest-Connect-Default	Supports asynchronous processing of SOAP connector requests by the Pega-IntSvcs agent.	About Connect Request Processor data instances
System-Queue-ExecutionRequest-Service-Default	Supports asynchronous processing of service requests by the Pega-IntSvcs agent.	About Service Request Processor data instances
System-Queue-ServiceLevel	Supports service-level calculations and escalations by the Pega-ProCom agents.	Understanding the Pega-ProCom agents
System-Requestor-Context	Data for passivated requestors, identified by requestor ID. The data is Base64 encoded.	passivation
System-Status-Nodes	Identify other server nodes participating in your system.	More about System Node data instances
System-SavedPages	Saves Thread contexts for a user after time-out.	time-out
System-Updates-Cache	Identifies rules updated since the most recent system pulse, and so potentially stale in the rule cache of other nodes.	rule cache
System-User-MyRules	Control the delegated rules facility, visible in the My Business Rules area of the Process Work workspace.	About My Rule Gadget
System-Work-Indexer	Supports advanced search for work objects. Used by the Pega-RULES agent to hold agent queue entries after a new work object is created. After Lucene indexing is complete, the agent queue entry is removed.	PegaRULES database - System, Log, and miscellaneous tables

System- base class

Working with the PegaRULES database — System, Log, and miscellaneous tables

About Class rules
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