2972117 - 500 Internal Server Error while opening AS Java UserAdmin Page

•  500 Internal server error while accessing AS Java useradmin page or the PI Monitoring (PIMON) page.
•  All other AS Java URL work fine.
•  In default Traces (location: /usr/sap/<SID>/<instance>/j2ee/cluster/serverX/log), you see: 

  500 Internal Server Error is returned for HTTP request [http(s)://<host:port>/webdynpro/resources/sap.com/tc~sec~ume~wd~umeadmin/UmeAdminApp]:

  [EXCEPTION]

  java.lang.NoClassDefFoundError: com/ibm/icu/impl/ICUDebug : cannot initialize class because prior initialization attempt failed....

  ....caused by: java.lang.IllegalArgumentException: Invalid version number: Version number may be negative or greater than 255

• In std_serverX.out(location:/usr/sap/<SID>/<instance>/work), you see 

  java.lang.ExceptionInInitializerError

  at com.ibm.icu.impl.NormalizerDataReader.<clinit>(NormalizerDataReader.java:300)

  at com.ibm.icu.impl.NormalizerImpl.<init>(NormalizerImpl.java:288)

  at com.ibm.icu.impl.NormalizerImpl.<clinit>(NormalizerImpl.java:35)

SAP NetWeaver Application Server Java

UDDI, JVM, IllegalArgumentException: , Invalid version number:,  Version number may be negative or greater than 255, negative, grater, 255, version number, SUM, SOLMAN, upgrade, deploy, deployment, cannot initialize class because prior initialization attempt failed, UME, 500 Internal Server Error , KBA , BC-JAS-SEC , Security, User Management , Problem