The Oracle External Proxy software interrogates an Oracle Database or Oracle RAC service and interprets the availability of that service as an Oracle Solaris Cluster resource state or status. As part of that interrogation, the Oracle External Proxy software uses the Oracle JDBC thin driver to connect to the Oracle Database or Oracle RAC service. The connection is then interpreted by Oracle Solaris Cluster with the Oracle External Proxy resource state and status message.
The Oracle External Proxy writes to a trace file within the /var/cluster/logs/DS/ORCLscoep/message_log.resource file on each node where three generations are kept. The Oracle External Proxy resource type is responsible for maintaining the generations and automatically removes old generations.
If the Oracle External Proxy cannot connect to the Oracle Database or Oracle RAC service, the Oracle Solaris Cluster resource will go offline. An appropriate resource status message will indicate the reason why the connection was not possible. As soon as the Oracle External Proxy can connect to the Oracle Database or Oracle RAC service, the Oracle Solaris Cluster resource will come online.