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Oracle Apps DBA: Keeping E-Business Suite Alive · Module 2 · The stack you are responsible for

Ports, and the ones you will be asked about

Lesson 19 of 184 · 3 min

The port pool, what listens on what, and HOW TO ANSWER THE NETWORK TEAM WITHOUT GUESSING. EBS uses a lot of ports and it does not choose them arbitrarily. An instance is assigned a PORT POOL, and the port numbers for every component are derived from it — so once you know the pool, every port is calculable rather than memorable. THAT IS THE WHOLE TRICK AND IT IS WHY THIS LESSON IS SHORT. The database listener, the web listener, the forms port and the rest all sit at a fixed offset from the pool base, and they are all recorded in the CONTEXT FILE. So the answer to any port question is in one file on the system, and it is authoritative in a way your memory of the last instance is not. WHICH MATTERS BECAUSE MULTIPLE INSTANCES ON ONE HOST USE DIFFERENT POOLS DELIBERATELY. That is how two

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In this module: Module 2 · The stack you are responsible for

  1. 1The two tiers, and why the split matters
  2. 2What is running right now
  3. 3The file system layout
  4. 4Environment files, and sourcing the right one
  5. 5The context file
  6. 6AutoConfig, and what it overwrites
  7. 7Ports, and the ones you will be asked about
  8. 8Logs: where they are and which one to open first
  9. 9What breaks: three architecture surprises
  10. 10Lab briefing · Map a running instance