Solution : https://service.sap.com/sap/support/notes/456779 (SAP Service marketplace login required)
Key words :
class loader constraint violation errors, dialogthe caching validity period defines, service pack 4 patch 2 note 550335 describes, generates considerably shorter urls, short/medium/long/infinite, web-inf/deployment/tools 4, java-based portal runtime, button <system properties> appears, prerequisites note 452517 describes, caching validity period
Related Notes :
| 595508 | EP 5.0: Java Portal Runtime - SP 5.1 Bug Fixes |
| 420194 | Enterprise Portal 5.0 - READ ME FIRST!!! |