JDBC driver throwing error while connecting to the slave server for partitioned table

We are facing below issue after creating slony replication of
partitioning table in edb server 8.3.

This issue persist only on slave one not the primary one.

Below logs we found in tomcats.

Error in postgresql driver initialization:
com.edb.util.PSQLException: The connection attempt failed.
at com.edb.core.v3.ConnectionFactoryImpl.openConnectionImpl(ConnectionFactoryImpl.java:176)
at com.edb.core.ConnectionFactory.openConnection(ConnectionFactory.java:64)
at com.edb.jdbc2.AbstractJdbc2Connection.<init>(AbstractJdbc2Connection.java:153)
at com.edb.jdbc3.AbstractJdbc3Connection.<init>(AbstractJdbc3Connection.java:30)
at com.edb.jdbc3.Jdbc3Connection.<init>(Jdbc3Connection.java:24)
at com.edb.Driver.makeConnection(Driver.java:385)
at com.edb.Driver.connect(Driver.java:260)
at java.sql.DriverManager.getConnection(DriverManager.java:582)

Pls help us.