We are using SUSE Linux version 9.X

We have our application developed in J2SDK 1.4.2.X

In our machine we are running two java processes .Those two processes uses memory from RAM , once the memory need is more , swap memory increases.

Two processes which runs are swing application and one messaging application.

Sad part here is , swap memory does not remain constant , it keeps on increasing for every activity and as a result of constant increase in swap memory , load average of CPU increases and thereby reducing the performance of the application.

Is this behaviour is as expected or is there anything needs to be done at OS level such that both processes always use memory from RAM and not from Swap.