Error occured while spawning process P** ; error = 3135 ,Process P** died

Error occured while spawning process P** ; error = 3135 ,Process P** died
==========================================================================



From some days ago, i am seeing the following message
in my Database alert log file.

After diagnosis, I found that,there are many session creating many PX parallel processes
in out system.

Then i thought, i must need to limit/control the parallel processes because sometime
it crossing the "Processes" parameter value of init parameter file.

so, i done it.....see below

SQL> show parameter paralle

NAME TYPE VALUE
------------------------------------ ----------- ------------------
fast_start_parallel_rollback string LOW
parallel_adaptive_multi_user boolean TRUE
parallel_automatic_tuning boolean FALSE
parallel_execution_message_size integer 2152
parallel_instance_group string
parallel_max_servers integer 640
parallel_min_percent integer 0
parallel_min_servers integer 0
parallel_server boolean FALSE
parallel_server_instances integer 1
parallel_threads_per_cpu integer 2

NAME TYPE VALUE
------------------------------------ ----------- ------------------
recovery_parallelism integer 0
SQL>


Here :-

parallel_max_servers = CPU_COUNT x PARALLEL_THREADS_PER_CPU x (2 if PGA_AGGREGATE_TARGET > 0; otherwise 1) x 5

CPU_COUNT = 32

So

parallel_max_servers = 32*2*2*5 = 640


I change the value to 300

SQL> alter system set parallel_max_servers = 300 scope=both ;


after that the following message is disappeared from my alert log file .




here is the content of alert log ......................



Error occured while spawning process PB05; error = 3135
Thu Jun 9 14:33:21 2011
Timed out trying to start process PB39.
Thu Jun 9 14:33:27 2011
Timed out trying to start process PB47.
Thu Jun 9 14:34:03 2011
Error occured while spawning process PB83; error = 3135
Thu Jun 9 14:34:18 2011
Error occured while spawning process PB95; error = 3135
Thu Jun 9 14:34:51 2011
Timed out trying to start process PC19.
Thu Jun 9 14:35:15 2011
Error occured while spawning process PC42; error = 3135
Thu Jun 9 14:35:16 2011
Timed out trying to start process PC45.
Thu Jun 9 14:35:32 2011
Timed out trying to start process PC53.
Thu Jun 9 14:35:59 2011
Timed out trying to start process PC70.
Thu Jun 9 14:36:31 2011
Timed out trying to start process PC90.
Thu Jun 9 14:36:31 2011
Error occured while spawning process PC93; error = 3135
Thu Jun 9 14:36:37 2011
Error occured while spawning process PD26; error = 3135
Thu Jun 9 14:37:03 2011
Error occured while spawning process PD77; error = 3135
Thu Jun 9 14:38:39 2011
Error occured while spawning process PE61; error = 3135
Thu Jun 9 14:40:55 2011
Error occured while spawning process PF81; error = 3135
Thu Jun 9 14:40:56 2011
Error occured while spawning process PF87; error = 3135
Thu Jun 9 14:40:58 2011
Error occured while spawning process PG02; error = 3135
Thu Jun 9 14:41:02 2011
Timed out trying to start process PG28.
Thu Jun 9 14:41:50 2011
Error occured while spawning process PG80; error = 3135
Thu Jun 9 14:42:27 2011
Error occured while spawning process P526; error = 3135
Thu Jun 9 14:43:00 2011
Error occured while spawning process P526; error = 3135
Thu Jun 9 14:43:26 2011
Timed out trying to start process P961.
Thu Jun 9 14:46:31 2011
Error occured while spawning process PI59; error = 3135
Thu Jun 9 14:49:43 2011
Timed out trying to start process PJ98.
Thu Jun 9 14:49:43 2011
Error occured while spawning process PJ99; error = 3135
Thu Jun 9 14:50:53 2011
Error occured while spawning process PK54; error = 3135
Thu Jun 9 14:51:08 2011
Timed out trying to start process PK69.
Thu Jun 9 14:51:08 2011
Error occured while spawning process PK73; error = 3135
Thu Jun 9 14:51:10 2011
Error occured while spawning process PK82; error = 3135
Thu Jun 9 14:51:15 2011
Error occured while spawning process PJ98; error = 3135
Thu Jun 9 14:51:38 2011
Error occured while spawning process PL44; error = 3135
Thu Jun 9 14:51:45 2011
Timed out trying to start process PL84.
Thu Jun 9 14:51:50 2011
Timed out trying to start process PM21.
Thu Jun 9 14:51:51 2011
Error occured while spawning process PM27; error = 3135
Thu Jun 9 14:51:52 2011
Timed out trying to start process PM34.
Thu Jun 9 14:52:01 2011
Error occured while spawning process PN14; error = 3135
Thu Jun 9 14:52:05 2011
Timed out trying to start process PN43.
Thu Jun 9 14:52:06 2011
Timed out trying to start process PN54.
Thu Jun 9 14:52:10 2011
Timed out trying to start process P310.
Thu Jun 9 14:53:07 2011
Process P529 died
Thu Jun 9 14:53:09 2011
Process P533 died
Thu Jun 9 14:53:13 2011
Process P537 died
Thu Jun 9 14:53:14 2011
Process P541 died
Thu Jun 9 14:53:16 2011
Process P556 died
Thu Jun 9 14:53:17 2011
Process P561 died
Thu Jun 9 14:53:20 2011
Process P576 died
Thu Jun 9 14:53:22 2011
Process P581 died
Thu Jun 9 14:53:23 2011
Process P586 died
Thu Jun 9 14:53:24 2011
Process P591 died
Thu Jun 9 14:53:25 2011
Process P596 died
Thu Jun 9 14:53:26 2011
Process P601 died
Thu Jun 9 14:53:27 2011
Process P606 died
Thu Jun 9 14:53:29 2011
Process P616 died
Thu Jun 9 14:53:30 2011
Process P621 died
Thu Jun 9 14:53:31 2011
Process P626 died
Thu Jun 9 14:53:32 2011
Process P631 died
Thu Jun 9 14:53:33 2011
Process P636 died
Thu Jun 9 14:53:34 2011
Process P529 died
Thu Jun 9 14:53:35 2011
Process P533 died
Thu Jun 9 14:53:36 2011
Process P537 died
Thu Jun 9 14:53:37 2011
Process P651 died
Thu Jun 9 14:53:38 2011
Process P541 died
Thu Jun 9 14:53:39 2011
Process P556 died
Thu Jun 9 14:53:40 2011
Process P561 died
Thu Jun 9 14:53:42 2011
Process P661 died
Thu Jun 9 15:01:52 2011
Thread 1 advanced to log sequence 89889 (LGWR switch)
Current log# 2 seq# 89889 mem# 0: /d01/oracle/oradata/stlbas/redo02.log
Thu Jun 9 15:02:34 2011
Thread 1 advanced to log sequence 89890 (LGWR switch)
Current log# 3 seq# 89890 mem# 0: /d01/oracle/oradata/stlbas/redo03.log
Thu Jun 9 15:17:10 2011
.......................................
.........................................
........................................

Current log# 12 seq# 92947 mem# 0: /d01/oracle/oradata/stlbas/redo12.log
Sun Jul 10 09:29:47 2011
Error occured while spawning process P746; error = 3135
Sun Jul 10 09:47:17 2011
Thread 1 advanced to log sequence 92948 (LGWR switch)
Current log# 1 seq# 92948 mem# 0: /d01/oracle/oradata/stlbas/redo01.log
Sun Jul 10 09:55:48 2011
ALTER SYSTEM SET parallel_max_servers=300 SCOPE=BOTH;
Sun Jul 10 10:02:25 2011
Thread 1 advanced to log sequence 92949 (LGWR switch)
Current log# 2 seq# 92949 mem# 0: /d01/oracle/oradata/stlbas/redo02.log
Sun Jul 10 10:10:26 2011
Thread 1 advanced to log sequence 92950 (LGWR switch)
Current log# 3 seq# 92950 mem# 0: /d01/oracle/oradata/stlbas/redo03.log
Sun Jul 10 10:52:50 2011
Thread 1 advanced to log sequence 92951 (LGWR switch)
Current log# 4 seq# 92951 mem# 0: /d01/oracle/oradata/stlbas/redo04.log
Sun Jul 10 11:02:09 2011
Thread 1 advanced to log sequence 92952 (LGWR switch)
Current log# 5 seq# 92952 mem# 0: /d01/oracle/oradata/stlbas/redo05.log
Sun Jul 10 11:08:37 2011
Thread 1 advanced to log sequence 92953 (LGWR switch)
Current log# 6 seq# 92953 mem# 0: /d01/oracle/oradata/stlbas/redo06.log


---------------------cheers---------------------------