There is no default location for the connection configuration file. iServer uses the value of the configuration file parameter to locate the connection configuration file.
If you do not specify a value for this parameter, iServer uses the database connection properties in the report executable file. When you set or change the value of the configuration file parameter, you must restart iServer for the change to take effect.
If you have an iServer cluster, each iServer in the cluster must have access to the file. You must use a local absolute path for each machine in the cluster. If you use a single copy of the file for a cluster, put the file in a shared location and set the path to that shared location for all iServers in the cluster.