Portal down after system refresh

Question

Hello all,
We have done a system refresh for QAS from PROD for BI with export import of the backup into test. Everything was ok and refreshed BI is working fine but the SAP BI PORTAL is down. Nothing it is working. I can`t acces the link of the portal nor the visual admin nor configtool. Can you help us making the test working. I know a solution of reinstalling the portal with sapinst but i do not belive that this is the only solution.
The Test Portal have nothing changed. It is the same like it was but the BIT has changed a lot. Can anybody give some ideas how to make it work?
I give you some information found in logs:
dev_jrfc.trc :    Return code: RFC_FAILURE(1)
    error group: 102
    key: RFC_ERROR_COMMUNICATION
Error> occured  >Tue Aug 24 09:21:56,809<   
RfcException:
    message: Connect to SAP gateway failed
Connect_PM  TYPE=A ASHOST=localhost SYSNR=11 GWHOST=localhost GWSERV=sapgw11 PCS=1
LOCATION    CPIC (TCP/IP) on local host
ERROR       partner '127.0.0.1:sapgw11' not reached
TIME        Tue Aug 24 09:21:56 201
RELEASE     700
COMPONENT   NI (network interface)
VERSION     38
RC          -10
MODULE      nixxi.cpp
LINE        2513
DETAIL      NiPConnect
SYSTEM CALL connect
ERRNO       79
ERRNO TEXT  A remote host refused an attempted connect operation.
COUNTER     8
    Return code: RFC_FAILURE(1)
    error group: 102
    key: RFC_ERROR_COMMUNICATION
default trace: #2#================================== Connection ==================================
ID                            502279030649651208                               
Type                          QueueConnection                                  
Mode                          STOPPED                                          
isClosed                      YES                                              
com.sap.jms.server.SynchronousNetworkAdapter@32af32af isClosed = false waitTableSize = 0 conectionId = 8----
ConnectionMetaData -
JMSVersion                    Version 1.1                                      
PorviderVersion               Version 1.0                                      
SupportedJMSXProperties       JMSXGroupID, JMSXGroupSeqJMSXDeliveryCount       
================================================================================
#javax.jms.JMSException: JMS Service is stopped
SO we can`t acces Visual Admin and configtool.
Thanks in advance

Answer 1

So i have open both files services / hosts.. and everything seems to be ok. On services i found
sapgw11       3311/tcp      # SAP System Gateway Port
The servers are AIX and the DB si Oracle. Nobody changed these files for more than 2 years and before refresh oh QAS the portal worked just fine. Practically the problem is that there is no connection between BI TST and TST portal. Nothing even at unix level. I think the problem is soewhere between DB and portal.. because he can`t find any connection.
Some other log files:
database.1.log :
#1.5 #001A64E912A200310000003B001570BE00048E8BC8337BDA#1282630917258#/System/Database/sql/jdbc/direct##com.sap.sql.jdbc.direct.DirectConnection#######SAPEngine_System_Thread[impl:5]_27##0#0#Error#1#com.sap.sql.jdbc.direct.DirectConnection#Java#com.sap.sql_0003#com.sap.sql.log.OpenSQLResourceBundle#SQL error occurred on connection beta:BIT:SAPBIPDB: code=17,002, state="null", message="Io exception: Connection reset";
SQL statement is "ROLLBACK".#5#17002#<null>#Io exception: Connection reset#beta:BIT:SAPBIPDB#ROLLBACK#
server0.log : #1.5 #001A64E912A200450000082C001570BE00048E8BC83E8D97#1282630917983#/System/Server##com.sap.caf.eu.cc.content.svc.CCServiceFrame#######SAPEngine_System_Thread[impl:5]_75##0#0#Error#1#com.sap.caf.eu.cc.content.svc.CCServiceFrame#Plain###Cannot instantiate class: com.sap.engine.services.jndi.InitialContextFactoryImpl
javax.naming.NoInitialContextException: Cannot instantiate class: com.sap.engine.services.jndi.InitialContextFactoryImpl.  Root exception is java.lang.ClassNotFoundException: com.sap.engine.services.jndi.InitialContextFactoryImpl
     at java.lang.Class.forNameImpl(Native Method)
1.5 #001A64E912A200680000003B001570BE00048E8BC82CCE12#1282630916813#/System/Security#sap.com/com.sap.workflow.j2eemoni#com.sap.engine.services.security#J2EE_GUEST#0#####SAPEngine_Application_Thread[impl:3]_7##0#0#Error#1#com.sap.engine.services.security#Java#security_3031#com.sap.engine.services.security.exceptions.SecurityResourceBundle#Cannot get run_as identity for the security role "".#1#MBeanCreator#
#1.5 #001A64E912A20009000006CF001570BE00048E8BC83BC936#1282630917802#/System/Security##com.sap.engine.services.userstore#######SAPEngine_System_Thread[impl:5]_64##0#0#Info#1#com.sap.engine.services.userstore#Plain###Service userstore stopped OK#
Thanks