This illustration shows a box labeled "Oracle HTTP Server" at the top. Below and to either side are two boxes labeled "OracleAS Instance 1" and "OracleAS Instance 2". In the "OracleAS Instance 1" box, there is s smaller box labeled "OC4J Instance Home" containing five smaller boxes labeled ""App1 Queue", "App2 Queue", "JMS Server", "Application #1", and "Application #2". There are two-sided arrows with dashed lines going from the "JMS Server" box to each of the four other boxes. In the "OracleAS Instance 2" box, there is a smaller box labeled "OC4J Instance Home" containing three smaller boxes labeled "JMS Server (disabled)", "Application #1", and "Application #2". There are two-sided arrows with dashed lines going from the "JMS Server" in the "OracleAS Instance 1" box to the "Application #1" and "Application #2" boxes in the "OracleAS Instance 2" box. Additionally, there are two arrows with dashed lines going from the "Oracle HTTP Server" box to each of the "JMS Server" boxes.