I'm using Oracle Application EBS R12 which connects to Oracle DB Why do we need Listener.ora in Oracle EBS Application ? If so, can anyone explain why EBS Application needs it ?

  • Client connections into an Oracle database go through the Listener and as far as I know that applies regardless of the application. Feb 15 '17 at 10:45
  • Yes, I'm totally agreeing your point but why there is a need for listener in EBS Application server ? Feb 15 '17 at 11:01

The ICM starts up a Service Manager on each node that is enabled for concurrent processing, by instructing the node's Applications Listener (which is dedicated to Concurrent Processing) to spawn a process running the Service Manager executable (FNDSM).

The Applications Listener must be configured to source the Oracle E-Business Suite environment file before FNDSM is spawned.

Following startup, the Service Manager acts as an agent of the ICM to start and stop concurrent managers on that node, according to their defined work shifts.

For more info Click here to Oracle Docs

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