2937917 - Generalized issues in portal after upgrade such as blank screens, portal administration tools not loading content etc

• Microsoft SQL is used as database;
• Application Server Java and Portal were upgraded to new version;
• Portal applications are facing issues that may include but not limited to: blank screens, applications not loading content;
• The following exception is found on defaulttrace files:
   
  Could not release lock after resource sync. Lock handle name: (...)
  com.sapportals.portal.pcd.gl.LockingException: Get of lock object failed
  Unexpected exception when executing Lock.selectSingleByAppRes() [Root exception is com.sap.portal.locks.LockingException: Unexpected exception when executing Lock.selectSingleByAppRes()]
  (...)
  Caused by: java.lang.NullPointerException: while trying to invoke the method java.lang.String.length() of a null object loaded from field com.microsoft.sqlserver.jdbc.SQLServerClobBase.value of an object loaded from local variable 'this'
          at com.microsoft.sqlserver.jdbc.SQLServerClobBase.length(SQLServerClob.java:388)
          at com.microsoft.sqlserver.jdbc.SQLServerClob.length(SQLServerClob.java:97)
          at com.sap.sql.jdbc.common.CommonWrappedClob.length(CommonWrappedClob.java:59)
          at com.sap.portal.locks.LockStatements.convertClobToString(LockStatements.java:1477)
          at com.sap.portal.locks.LockStatements.selectSingleByAppRes(LockStatements.java:287)
          ... 78 more
  
  

• NetWeaver Application Server Java
• Enterprise Portal
• Microsoft SQL 

system landscape, portal content, system administration, content administration, PCD, portal content directory, delayed deployment, lock, locking , KBA , EP-PIN-MIG , Upgrades issues (6.4 / 7.0 to >=7.3) , BC-DB-MSS , SQL Server in SAP NetWeaver Products , EP-PIN-PRT , Portal Runtime , BC-PIN-PCD , PCD Generic Layer Services , Problem