Reconnection to oracle DB

Question

Dear Experts,
I use oracle thin client.
How can my application keep retry of login to database at startup if the database host shutdown? (e.g. ds.setURL("jdbc:oracle:thin:@invalid host:15111:locdb");
If I can create connection pool and execute sql statement successfully, In case the db server reboot , and the connection created are no longer valid, Then , How can my application refresh/reconnect the old connection in the pool to db server ?
Here is my code
import java.io.*;
import java.util.*;
import java.sql.*;
import javax.sql.*;
import oracle.jdbc.driver.*;
import oracle.jdbc.pool.*;
public class myTst{
static OracleConnectionPoolDataSource ds=null;
static OracleConnectionCacheImpl dbPool=null;
public static void main(String[] args)
Connection conn=null;
Statement st=null;
ResultSet rs=null;
try{
ds = new OracleConnectionPoolDataSource();
ds.setURL("jdbc:oracle:thin:@192.168.200.100:15333:locdb");
ds.setUser("abcabc");
ds.setPassword("abcabc");
ds.setLoginTimeout(10);
dbPool = new OracleConnectionCacheImpl(ds);
dbPool.setMaxLimit(3);
dbPool.setCacheScheme(OracleConnectionCacheImpl.
FIXED_RETURN_NULL_SCHEME);
conn = dbPool.getConnection();
st = conn.createStatement();
rs = st.executeQuery("select sysdate from dual");
if(rs.next())
System.out.println("Date : " + rs.getString(1));
rs.close();
st.close();
conn.close();
catch(Exception e){
e.printStackTrace(System.out);
}

Answer 1

user13339672 wrote:
I need a help from you all .
For any java application is there any way that reconnects to oracle database without bouncing the JAVA applications?
How can we avoid these application bounce and is there any parameter recommended in oracle side which can be set at either server level /listener level?
Database version 10g.
Let me know if you want me to elaborate it .Yes, it will be better to elaborate. I do not see why you need to bounce you application to reconnect to Oracle. If it is so, then you need to check the design.