Symptom
Connection to DTR fails. When trying to connect to the Design Time Repository (DTR) from Internet Explorer, the following exception error is thrown:
javax.servlet.ServletException: ResourceException in method ConnectionFactoryImpl.getConnection(): com.sap.engine.services.dbpool.exceptions.BaseResourceException: SQLException thrown by the physical connection: com.sap.dbtech.jdbc.exceptions.JDBCDriverException: SAP DBTech JDBC: Cannot connect to jdbc:sapdb:// ://<system name>/<database instance name> \ Cannot connect to host <system name> Connection refused: connect, -813.
When trying to connect to DTR using a standalone client, the following error message is thrown.
500 Internal Server error.
Is your database up and running?
yes
no: please start the database