Need better workaround for intermittent out-of-stack in Arrays.sort for compressed binary serialization

On IBM Java 6, there is an occasional failure in Arrays.sort used to sort the strings in the heap. The failure is an out-of-stack-space error. It is very intermittent. I had earlier seen this, and had wrapped the call to Arrays.sort in a try/catch loop which caught the out-of-stack-space. The code would retry this once, after reversing the array (thinking this would change things to avoid the out-of-memory). In further extensive use, this error has popped up again, even with this retry. Need a better workaround.