OK after having created RICM DB manually with the install.sh script I did the following steps:
1. imported the updated reports allrqm.zip
2. fixed the signons for the datasource

I can now connect to RIDW and RIDW ETL datasource.
Connection to RQM and RQM ETL is failing even I configured the right connection information in XML Data Configuration Lite.
There are multiple reasons for the error:

* the information in the odbc.ini are incorrect see technote:
http://www-01.ibm.com/support/docview.wss?uid=swg21411699
* the information in the odbcinst.ini are incorrect, the ODBC driver path contains a non existent path to the shared library
Driver = /opt/ibm/ratlxml/odbc/libratlxml.so
fix to /opt/ibm/RationalInsight/dataconfig/odbc/libratlxml.so
Setup = /opt/ibm/ratlxml/odbc/libratlxmlS.so
fix to /opt/ibm/RationalInsight/dataconfig/odbc/libratlxmlS.so

* on RHEL 5 I have to install missing libraries for odbc(rpms unixODBC-2.2.11 and unixODBC-devel-2.2.11)
* I copied the odbc.ini and odbcinst.ini to the /etc dir as described here
http://www.unixodbc.org/internals.html

After fixing this I can connect to RQM ETL but not to RQM datasource (live data source).
I run into the same problem described here:
Can't find resource for bundle java.util.PropertyResourceBundle, key MDSRVRequestInvoker.noResponse
http://www.ibm.com/developerworks/forums/thread.jspa?messageID=14429160

Now I can run at least data warehouse based reports.
But I can't run live reports.
Has somebody else the RQM Live datasource running with RCR on RHEL 5 and DB2?

Thanks in advance,
Ren Meyer