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FMW OPMN Consumes Very High CPU Usage and Generates a lot of "checking receive queue" Debug Messages (Doc ID 2423833.1)

Last updated on AUGUST 28, 2023

Applies to:

Oracle Fusion Middleware - Version to [Release Oracle11g]
Information in this document applies to any platform.


After starting up OPMN and managed components, the OPMN process may consume very high CPU usage.

There were a lot of "checking receive queue" messages appear in the INSTANCE_HOME/diagnostics/logs/OPMN/opmn/opmn.log if setting log level to debug:

The INSTANCE_HOME/diagnostics/logs/OPMN/opmn/opmn.log shows:

The issue may happen in various system components in Oracle Fusion Middleware, e.g. Oracle HTTP Server (OHS), Oracle Internet Directory (OID), Oracle Virtual Directory (OVD) and Business Intelligence Suite Enterprise Edition (BIEE).


The issue may happen during running OPMN without special operations.


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