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12c Agent Fails To Start With java.lang.ClassFormatError (Doc ID 2453346.1)

Last updated on SEPTEMBER 28, 2018

Applies to:

Enterprise Manager Base Platform - Version 12.1.0.4.0 and later
Information in this document applies to any platform.

Symptoms

emctl start agent
Oracle Enterprise Manager Cloud Control 12c Release 4
Copyright (c) 1996, 2014 Oracle Corporation. All rights reserved.
Starting agent ................................................. failed.
Fatal agent error: HTTP Client Configuration failed at Startup
Consult emctl.log and emagent.nohup in: /opt/app/oracle/product/agent12/agent_inst/sysman/log
[oracle@VL2SMEMORAACA11 ~]$ emctl clearstate agent
Oracle Enterprise Manager Cloud Control 12c Release 4
Copyright (c) 1996, 2014 Oracle Corporation. All rights reserved.
Exception in thread "main-23797" java.lang.ClassFormatError: Illegal constant pool index 47 for method signature in class file sun/security/x509/AlgorithmId
  at sun.security.pkcs.PKCS7.parseSignedData(PKCS7.java:225)
  at sun.security.pkcs.PKCS7.parse(PKCS7.java:141)


OEM agent was working properly on 9/14/18.

Cause

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