SAP Knowledge Base Article - Preview

1630240 - Blank page on EP / NWA after executing a specific software logistic process


AS Java administrative User Interfaces behave inconsistently with runtime errors/exceptions after a successful installation, migration, upgrade to SAP NW 7.3x, NW 7.40, NW 7.50 etc.

Example issues encountered can be:

  • Blank page after portal installation when loading administration user interfaces like portal, NWA etc. 
  • Portal runtime error when importing/Exporting Portal content or Themes. 
  • Problem with JCO pools and Session Release Agent mechanism
  • Portal runtime error when navigating through quick links
  • Exceptions in defaultTrace files such like:
    com.sapportals.portal.prt.runtime.PortalRuntimeException: PortalRuntimeException
    Caused by: java.lang.NullPointerException: while trying to invoke the method java.lang.String.lastIndexOf(int) of a null object loaded from local variable 'styleSheetURL'



  • SAP NetWeaver Application Server for Java
  • SAP Enterprise Portal


SAP NetWeaver 7.3 ; SAP NetWeaver 7.4 ; SAP NetWeaver 7.5 ; SAP enhancement package 1 for SAP NetWeaver 7.3


upgrade deploy 7.3 NW netweaver Portal installation update patch version SP5 SP05 SP6 SP06 SP7 SP07 SP8 SP08 SP9 SP09 , KBA , EP-PIN , SAP Enterprise Portal (On Premise) , BC-UPG , Upgrade - general , BC-INS , Installation Tools (SAP Note 1669327) , BC-JAS , NetWeaver Application Server Java , EP-PIN-MIG , Upgrades issues (6.4 / 7.0 to >=7.3) , How To

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