Advanced Security Option(ASO) Causes JDBC/APEX/ORDS/WebLogic Applications Consume High CPU
(Doc ID 2522435.1)
Last updated on JUNE 26, 2023
Applies to:
Oracle WebLogic Server - Version 10.3.6 and laterOracle REST Data Services - Version 3.0.0 and later
Oracle Application Express (APEX) - Version 5.0.0.00 and later
Oracle Exalogic Elastic Cloud Software - Version 2.0.6.0.0 and later
Advanced Networking Option - Version 12.1.0.1 and later
Information in this document applies to any platform.
Symptoms
WebLogic Server version: 12.2.1.2.0, APEX version: 5.0.2.00.072013.01.01, ORDS version: 3.0.2.294.08.40
On WebLogic managed servers with APEX/ORDS deployed on them, the CPU usage is extremely high which is close to 100%. Below is an example on one of the servers.
The hot packages and classes are shown below:
Meanwhile, we can see there are quite some hot threads, and the hot methods for each hot thread are same which are oracle.net.aso.b.c or oracle.net.aso.b.c. Below is a example thread from the JFR:
Changes
Cause
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In this Document
| Symptoms |
| Changes |
| Cause |
| Solution |
| References |