LD_ASSUME_KERNEL is an install-time only concern...hvaing said that, the difference between NPTL and non-NPTL performance wise with respect to what the listener does for a living would likely measure in the noise range... no biggie... So, Werner isn't wrong about his install tip... Unless memory fails me (could very well be), I blogged about this kevinclosson.wordpress.com ________________________________ From: jayaraj rengarajan [mailto:jayaraj.rengarajan@xxxxxxxxx] Sent: Friday, October 27, 2006 4:29 PM To: kevinc@xxxxxxxxxxxxx Cc: oracle-l Subject: Re: OS spawns multiple PIDs for one listener process Kevin: Thank you. Restarting the listener process by unsetting LD_ASSUME_KERNEL env. variable did the trick!