Running on Unix a process called native_t is takin up most of cpu

In the list of unix processes the top one returned is "native_t" belonging to the oracle user (ebusiness owner). The process is taking up between 40-80% of the cpu, peaks at almost 100% (seen it been up on 98%)

Anyone have a clue what it does?

ps -ef | grep [pid] says it is located in the jre folder:

[ebusiness_comn]/util/jre/1.1.8/bin/../bin/PA_RISC/native_t

Thanks

Andras