How to control the parallel 10gr 2 background process?

Hi Experts,

In my dev environment, there are 5 databases running and the server load was very high due to the EMP of database. In the EMP database ago 70 session SYS is running once raise us the DB and its execution of some commands insert. In OS level inception ora_p001_EMP ora_p060_EMP parallel process and operating system level processes use more server resources and these processes are listed in output TOPAS.

Please find the parallel parameter for reference:

SQL > show parameter parallel_

VALUE OF TYPE NAME
------------------------------------ ----------- ------------------------------
fast_start_parallel_rollback string LOW
parallel_adaptive_multi_user Boolean TRUE
parallel_automatic_tuning boolean FALSE
whole parallel_execution_message_size 2152
parallel_instance_group string
PARALLEL_MAX_SERVERS integer 160
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
recovery_parallelism integer 0

OS level parallel processes: [example of output and its polished]

/ opt/oracle > ps - ef | grep EMP
Oracle 418026 1 0 ora_p037_EMP 05:46:10-22:59
Oracle 667770 1 0 may 25-0:14 ora_lgwr_EMP
Oracle 802830 1 0 ora_p029_EMP 05:46:08-24:19
Oracle 983172 1 0 may 25-0:05 ora_psp0_EMP
Oracle 1351696 1 56 ora_p013_EMP 05:46:09-21:15
Oracle 1368228 1 0 may 25-0:00 ora_q001_EMP
Oracle 1703974 1 52 ora_p053_EMP 07:52:20 - 14:51
Oracle 1728598 1 0 may 25-0:00 ora_d000_EMP
Oracle 1773822 1 120 ora_p012_EMP 05:46:09-20:00
Oracle 1962148 1 82 ora_p016_EMP 05:46:08-19:23
1974506 Oracle 1 91 06:47:22-24:22 ora_p020_EMP
Oracle 2002954 1 0 05:46:08 - 36:27 ora_p027_EMP
Oracle 2048060 1 44 05:46:08, 09:54 ora_p001_EMP
Oracle 2400428 1 0 may 25-0:00 ora_s000_EMP
Oracle 2519090 1 0 may 25-0:41 ora_ckpt_EMP
Oracle 2580734 1 0 05:46:06 - 0:15 ora_j006_EMP

Could you please help me, how to reduce this parallel process [P001 to P060] and the use of server resources?

Thank you

But you have set up a huge amount for parallel servers

PARALLEL_MAX_SERVERS integer 160

Aman...

Tags: Database

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