The portal libs contains an older version of the dbe-toolkit-protocoladapter (0.5.5). The DBE Portal will not work with this older version
To fix it copy the latest protocoladapter (0.5.6) from:
$servent_home/common/dbe-toolkit-protocoladapter
to:
$servent_home/deploy/core-webapps/portal/WEB-INF/lib
Also delete in the the portal libs the older version (0.5.5) of the protocol adapter.
Before you do this, stop the servent, copy the file and start again
/V