Connect to two database

Question

Hi There,
I have two database servers which is A and B and they are replicated.
If I connect to A is fail and I want to connect to B .. How do I modified my statement and connection .
thanks,
mhvan

Answer 1

// your connection strings - for example
String connectionStringForA = "jdbc:mysql://localhost/yourdatabase?user=youruser&password=XXXX";
String connectionStringForB = ".......";
// your connection driver - for example
String connectionDriver = "com.mysql.jdbc.Driver";
// Connection reference
Connection sqlCon = null;
try {
  // Load database driver
  Class.forName(connectionDriver);
  // Attempt to make connection with first connection string A
  sqlCon = DriverManager.getConnection(connectionStringForA);
// Class not found exception do your handling
catch (ClassNotFoundException cnfex) {}
// first connection failed try second
catch (SQLException sqlex) {
  try {
    // Attempt to make connection with second connection string B
    sqlCon = DriverManager.getConnection(connectionStringForB);
  // Class not found exception do your handling
  catch (ClassNotFoundException cnfex) {}
  // second connection failed do your handling
  catch (SQLException sqlex) {}
}rykk