KB 163 - ClassLoader Error (library:sdo) on Agent Startup

KB 163 (Java): ClassLoader Error (library:sdo) on Agent Startup

Category: Problem	Priority: High
Platform: Java(NW)	Version: 1 from 23.03.2021

Description

After restarting your SAP Netweaver 7.x environment the PowerConnect UI component - spcj_wd - does not start. Attempts to restart the service also fail. There is an error similar to this in the defaultTrace log:

CODE

Caused by: java.lang.ClassNotFoundException: org.osoa.sca.sdo.ComponentType

------------------------- Loader Info -------------------------

ClassLoader name: [library:sdo]

Loader hash code: 22c8ee48

Living status: alive

Direct parent loaders:
[system:Frame]

Resources:

/usr/sap/P75/J00/j2ee/cluster/bin/ext/sdo/lib/[sap.com~sdo.jar
/usr/sap/P75/J00/j2ee/cluster/bin/ext/sdo/lib/[sap.com~sdo~api.jar
/usr/sap/P75/J00/j2ee/cluster/bin/ext/sdo/lib/[sap.com~sdo~api~extension.jar

---------------------------------------------------------------

at com.sap.engine.boot.loader.MultiParentClassLoader.loadClass(MultiParentClassLoader.java:280)
at com.sap.engine.boot.loader.MultiParentClassLoader.loadClass(MultiParentClassLoader.java:249)

Cause

This is a known issue with SAP internal code and is fixed by applying a service pack from SAP. The note detailing the issue and resolution with links to the service packs is here: https://launchpad.support.sap.com/#/notes/2186799