ReferenceEdit online Reference material supplements the information provided in the configuration documentation. Persistent data storeReview information about the persistent data store, which is used for storing historical data.Variables in PARMGEN configurationUsing variables in parameter definitions allows systems to share those definitions but retain unique values for the parameters. A variable acts as a placeholder. Each system that shares the definition replaces the variable with a unique value during product initialization. Most of parameters in the RTE configuration profile can be customized to use variables as values. Predefining and managing OMEGAMON started tasksIf you are using System Automation for z/OS®, make sure the automation rules are defined to start and manage the OMEGAMON® started tasks. System Automation comes with an OMEGAMON® policy that predefines these rules. Product codesCommon parametersCommon parameters are those used for setting and storing configuration values for the runtime environments (RTEs) in which the IBM® OMEGAMON® monitoring agents are configured (RTE, GBL) and for the common components of IBM® Tivoli® Management Services on z/OS®, such as the Tivoli Enterprise Monitoring Server (KDS) and the Tivoli Enhanced 3270 user interface (KOB). Common parameters also include common agent parameters (KAG and KPP). Common agent parameters are those parameters that are common to agents that can be configured stand-alone in an RTE without a Tivoli Enterprise Monitoring Server. What's new (previous updates)The topics in this section describe previous updates to the OMEGAMON configuration tools, products, and components.