Error with RAC and FCF enabled

@(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=my_vip_dns)(PORT=****))(CONNECT_DATA=(SERVICE_NAME=********)))"

 

Hi,

To improve the performance of our platform we have installed a RAC oracle.

All is well except JDBC error we have occasionally

To understand the problem here is a short presentation of our architecture

We have two tomcat (Tomcat 6) servers in cluster and an Oracle RAC with FCF (Fast connection Failover) enabled with the protocol "thin"

Here is Tomcat configuration

<Resource name="csqualstadatasourcei" auth="Container"
type="oracle.jdbc.pool.OracleDataSource"
factory="oracle.jdbc.pool.OracleDataSourceFactory"
description="My Oracle RAC DB"
user="************" password="*********"
url="jdbc:oracle:thin:@(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=my_vip_dns)(PORT=****))(CONNECT_DATA=(SERVICE_NAME=********)))"