After Applying patch Kit "4" of Compaq Tru64 Unix 5.1A, about 200 concurrent defunct PIDs are spawning during a peak concurrent user load of 800 concurrent application users .

"defunct" process is generated :-
1) when doing an ordinary telnet unix login to the machine

2) when doing sqlplus /passwd@ to the database server
NOTE - NO defunct process is generated when doing direct sqlplus call to database

3) when doing application login which spawns a database connecttion thru SQL*Net
NOTE - The defunct PID Values belonging to a unix user keep Changing . Seemingly NEW defunct processes keep getting spawned as old ones die off

This is causing a severe Application performance degradation on production even though there is plenty of FREE CPU & memory available


1) Before application of patch kit "4", FEWER defunct processes ( 50 at max. ) used to exist
at any point in time

2) Each application user spawns approx 4 unix processes while working with the application

3) Network thruput is OK between Application & Database Server

Qs. Is spawning of defunct processes during unix login normal ?
Qs. anybody has applied Patch kit "4" on Tru64 Unix ?
Qs. Any ideas how this issue may be approached ?


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grouporacle-l @
postedMay 26, '03 at 5:26p
activeMay 26, '03 at 7:51p

2 users in discussion

Stephane Faroult: 1 post VIVEK_SHARMA: 1 post



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