Impact of job_queue_processes parameter in oracle 10g

We have recently migrated 9i database to 10g.During business hours we will reduce the parallel jobs running to 5 and during night hours we set to 20.
After migration to 10g we faced major performance impact.Rest of the parameter we kept same as oracle 9i except obsolete.
Would change of this parameter will impact this performance?
What are other parameter we should check?
Can anyone help me regardng the performance improvement.This causes major business impact.
Thanks
Raghavendra

Hi,
When does you database becomes perticularly slow? In the day time ot night time?
What are the scheduled job (apart from queues) on your database? Is there any relation between the scheduled jobs running and your database slowing down?
Is there a stats collection job? Is it taking same time as before or taking longer?
Run this SQL,
select s.username,b.sid, a.STATISTIC#, name, b.value
from v$sesstat b, v$statname a, v$session s
where a.STATISTIC# = b.STATISTIC# and ( name like '%physical%' or name like '%consist%' )
and b.sid = s.sid and s.program not like 'oracle@%'
order by 2,4
Do you know about the views I have used in there? You can figure out the session with extensive read, write and select activities from here. Also, you will need to apply your logic there.
Best luck.

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4joey1 wrote:
Hallo! I have just installed Oracle 10g in Solaris 10.When I logged into sqlplus / as sysdba if found that I was connected to an idle instance. When I tried to startup open the db, the following error appeared
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[email protected] wrote:
HI ,
My question is
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>
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Hi ,
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Hi,
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You didn't specify if you are on a linux based OS, it looks like you are, but it would be so kind on your side if you clearly specify the OS version and which DB version you are planning to install.
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http://hrivera99.blogspot.com

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hi..
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hi all DBA experts.
I am not good familiar with Oracle database while i read a Note 830576 - Parameter recommendations for Oracle 10g. in which SAP General Recommendation:
You should delete obsolete initialization parameters from the profile.
To determine which obsolete parameters are currently set, proceed as follows:
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waiting you valuable reply.
Regards,

hi both,
thanks for knowledge sharing with me other SDN users,
Dear Orkun,
Ok. At this stage, I can recommend you that apply what they have suggested,
in the message. So, you already did a part of it by configuring
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SAP support sent me this file (PRD_Parameters)
*** INFORMATION 1 ***
*** INFORMATION 2 ***
*** INFORMATION 3 ***
*** INFORMATION 4 ***
*** INFORMATION 5 ***
*** INFORMATION 6 ***
*** INFORMATION 7 ***
*** INFORMATION 8 ***
*** INFORMATION 9 ***
*** INFORMATION 10 ***
*** INFORMATION 11 ***
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Patchset_10204_MSWIN-x86-64aa.bin
Patchset_10204_MSWIN-x86-64ab.bin
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OPatch
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p7592030_10204_WIN_GENERIC.zip
p9254968_10204_WIN_GENERIC.zip
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p9584028_102040_Generic.zip
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Regards,

SAP Note 830576 - Parameter recommendations for Oracle 10g

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NAME                                 TYPE        VALUE
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7 # Database instance (instance) ..... []
8 ~ Comment on update (comment) ...... []
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Message was edited by:
frank.qian

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Hi,
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