Properties of RAR file
The deployment descriptor can contain custom properties for a class that implements the managed connection factory interface. You can access the properties with the setter and getter methods in the class.
Performance
To enhance the performance of the connector:
Run the open connection/execute query command in a separate thread. This speeds up the execution and is also helpful for canceling a query.
Use the thread support of the Java application server
Minimize calls to the back end
Use chunks
Implement a query canceling mechanism
Provide a query syntax checker
Implement the connection specification as a java.util.Properties object and as a bean