Azhakesan Thangamuthu

I am not sure if JVM would take unrealistic high numbers for heap size.
Even if you have reasonable high number, your server CPU performance will go down as it consumes a lot of physical memory.
Also it is a matter of time when your JVM catches up with your high number.

As bill recommended , Best practice would be server restarts.
( Server restart as in stop and start your application server and not restarting your PC )

Looks like your application JNDI lookup is failing..
Chk your application server (tomcat) context and see if the data source is configured ..

And may be you should mask your JDBC credentials before you post ...

~ Alagesh

Using DD for authentication is one of the solution and not the only solution...
You can manage your list of user names / passwords in any secure way be it a database or LDAP ...

What do you mean by add / configure servlets programmatically?
Are you mentioning about Eclipse / any IDE's wizard to create and manage servlets ?
if yes , all the wizard does is the web.xml [class path and servlet name] mapping work for you

Thanks
Alagesh

The best part about javaranch SCWCD forum is that i was not the first one who had that 'silly' doubt and i found almost all possible 'interesting' questions discussed ....
Thanks to all fellow Ranchers

Regarding my preparation : Head First Servlets and Jsp [My Bible] and i recommend the same ...

Special thanks to [Head First Servlets & JSP] Book Authors & Team : /raises hand ..Big Fan

Thanks
Alagesh

Congrats

Congrats

Congratulations

Congrats Sandhya....

Congrats

Congrats