SAP Agent will not start and forces trace with error

Document ID : KB000084582
Last Modified Date : 14/04/2018
Show Technical Document Details
Error Message :
From forced trace:

20180319/112329.620 - 1 java.lang.RuntimeException: MD5 MessageDigest not available
at com.uc4.jgssapi.CmnEnc.md5Generate(
at com.uc4.jgssapi.CmnEnc.md5Generate(
at com.uc4.jgssapi.GssHelper.gss_PWEncrypt(
at com.uc4.keymgr.KeyManager.computeDefaultCompanyKey(
at com.uc4.keymgr.KeyManager.(
at com.uc4.ex.cp.CPConnection.initEncryption(

The SAP Agent will not start.

After attempting to start the Agent it instantly falls, and creates a forced trace file. The file contains the above error message.

Cause type:
Root Cause: An incompatible (likely older) version of the sapjco3.jar file is being used.
An incompatible version of the sapjco3.jar file is being used. The version of the .jar file can be checked with the following command:

java -jar sapjco3.jar

For higher versions of the Agent the output should be the following (i.e. this is the output for the sapjco3.jar that should be used with version 11.2.7):
| SAP Java Connector |
| Copyright (c) 2000-2015 SAP SE. All rights reserved. |
| Version Information |
Java Runtime:
Operating System: AIX 7.1 for ppc64
Java VM: 1.7.0 IBM Corporation
Default charset: ISO-8859-1
JCo API: 3.0.14 (2015-12-16)
JCo middleware: JavaRfc 2.2.17
JCo library: 721.619
Library Paths:
Path to JCo archive: /u01/Automic/sap/bin/sapjco3.jar
Path to JCo library: /u01/Automic/sap/bin/
| Manifest |
Manifest-Version: 1.0
Implementation-Vendor: SAP SE, Walldorf
Ant-Version: Apache Ant 1.6.4
Implementation-Version: 20151216 2300 [3.0.14 (2015-12-16)]
Specification-Vendor: SAP SE, Walldorf
Specification-Title: SAP Java Connector v3
Created-By: 5.1.028 (SAP AG)
Specification-Version: 3.0.14  

If the version of the sapjco3.jar is in fact incompatible with the Agent version being used, then download a compatible version of the sapjco3.jar file.

Then replace the old sapjco3.jar with the new sapjco3.jar in the Agent's bin directory. 

Fix Status: No Fix

Fix Version(s):
Additional Information:
Workaround :