Oracle SOA Cluster Topology: BPEL Console not working

Question

I have installed Oracle SOA Environment with the cluster topology(Hosts 3, Application Servers 3, OC4J Instances 4, HTTP Server Instances 1).
Host1: HTTP Server, Host2: OC4J(Cluster1), Host3: OC4J(Cluster2). Cluster1 and Cluster2 are connected to the same database.
BPEL Console is working fine with Host1 and Host2, and I am able to deploy and execute the processes. But when I bring up the Host3, I am getting the following error.
----------------BEGIN ERROR--------------------
Cannot fetch a datasource connection.
The process domain was unable to establish a connection with the datasource with the connection URL "jdbc/BPELServerDataSourceWorkflow". The exception reported is: Listener refused the connection with the following error:
ORA-12516, TNS:listener could not find available handler with matching protocol stack
The Connection descriptor used by the client was:
(DESCRIPTION=(ADDRESS_LIST=(LOAD_BALANCE=on)(ADDRESS=(PROTOCOL=tcp)(HOST=01hw085593)(PORT=1521)))(CONNECT_DATA=(SERVICE_NAME=XE)))
Please check that the machine hosting the datasource is physically connected to the network. Otherwise, check that the datasource connection parameters (user/password) is currently valid.
--------------END ERROR------------------------
Please help me in this regard.

Answer 1

Did you install SOA Suite on the cluster according to the documentation?
http://download.oracle.com/docs/cd/B31017_01/core.1013/b28941/soa.htm
Marc