Installation and Upgrade > Windchill ESI > Installing and Configuring Windchill ESI in an SAP Environment > Using the Middleware Installation and Configuration Utility > Supporting Multiple ERP Instances
  
Supporting Multiple ERP Instances
Windchill ESI allows you to publish data to multiple instances of an ERP system, and to multiple instances of different ERP systems.
For more information see Supporting Multiple Oracle Applications Instances or Supporting Multiple SAP Instances.
Deploying For Multiple Homogeneous ERP Instances
To deploy Windchill ESI for multiple instances of a given ERP system type (for example, multiple SAP systems, or multiple Oracle Applications systems) use the following procedure:
1. Run the MICU using the Typical installation method. Using this method installs all TIBCO components and configures and deploys Windchill ESI for one instance of the ERP system (for example, SAP or Oracle Applications).
2. Run the MICU again, using the Custom installation method.
3. Select Configure and Deploy ESI. This option allows you to deploy Windchill ESI for another ERP instance, with a different set of parameters.
Deploying for Multiple Heterogeneous ERP Instances
You can use Windchill ESI to associate SAP as well as Oracle Applications distribution targets to an object from Windchill and publish that object to those targets. To deploy Windchill ESI for multiple instances of different ERP system types (for example, multiple SAP systems, and multiple Oracle Applications systems) use the following procedure:
1. Run the MICU using the Typical installation method. Using this method installs all TIBCO components and configures and deploys Windchill ESI for one instance of the ERP system (for example, SAP or Oracle Applications).
2. Having deployed Windchill ESI for one ERP instance, remove the installation CD and replace it with the installation CDs for the other ERP system you want to deploy next. For example, if you first installed Windchill ESI for SAP, use the following CDs to deploy for an Oracle Applications instance:
◦ TIBCO Adapter for Oracle Applications
◦ Windchill ESI Business Logic for Oracle Applications
3. Select the option to install TIBCO Adapter for Oracle Applications.
4. Select Configure and Deploy ESI. This option allows you to deploy Windchill ESI for another ERP instance, with a different set of parameters.
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You can also use ERP Connector to associate distribution targets with an object.