U200 Port in use message is found in RKLVLOG, indicating an incorrect default port for TCP/IP profile

After you install and configure a monitoring agent and try to start the agent, a U200 Port in use abend message might display in the RKLVLOG. This message indicates a connection failure, which might occur if the communication port of the Tivoli® Management Services components is reserved for a different application in the PORT statement of your TCP/IP profile.

Procedure

  1. Verify that the existing port reservation is no longer needed or choose a different port for communication among the Tivoli Management Services components.
  2. Edit your TCP/IP profile to reserve the port for the Tivoli Enterprise Monitoring Server started procedure. Alternatively, change your configuration to communicate with the Tivoli Enterprise Monitoring Server on a different port.
    Configuration includes the Tivoli Enterprise Portal Server, Tivoli Enterprise Monitoring Server, and monitoring agents.
  3. Stop and then start the started procedures that are affected by your configuration change.