Start the Terracotta Server Array if it is not already started.

Make sure the machine on which Integration Server is running can reach the Terracotta Server Array host specified in the tc-config.xml file.

Test the connection by pinging the servers in the Terracotta Server Array. The servers are listed in the Terracotta Server Array URLs list on the Settings > Caching > Add Cache Manager screen.

Make sure the same version of Terracotta software is running on the client and the Terracotta Server Array. Check the ehcache.log file located in the Integration Server_directory /instances/instance_name/logs directory. If the Terracotta software version numbers are not the same, a version mismatch error will be logged and Integration Server shuts down.

Make sure the Integration Server has a valid Terracotta license key. If the Integration Server does not have a valid license key, you can enable clustering on the Integration Server; however, it will not be able to connect to the Terracotta Server Array. When the Integration Server starts up, it will write an error to the server log and then take the action associated with the selected option for the Action on Startup Error parameter. You can add a Terracotta license key by placing the Terracotta license file into the SoftwareAG_directory\common\conf directory of the Integration Server. You must restart the Integration Server after adding a Terracotta license. Alternatively, you can use the Settings > License > License Details > Edit page in Integration Server Administrator to point to a Terracotta license file at a different location. For more information about adding the Terracotta license file, see webMethods Integration Server Administrator’s Guide.