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Slow Perfomance In Oracle Streams [message #401652]

Tue, 05 May 2009 23:45

amitchhabra1981
Messages: 12
Registered: December 2008
Location: NOIDA

Junior Member

Hi,

When we delete records from source schema it takes long time to reflect on target schema and any other activity of streaming on other table gets delayed due to this.Example: to delete 50,000 records it takes 15 minutes on target schema.we have both the databases on the same server. How can we reduce this delay?

Thanks
Amit Chhabra Confused

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Re: Slow Perfomance In Oracle Streams [message #401664 is a reply to message #401652]

Wed, 06 May 2009 00:54

Michel Cadot
Messages: 68763
Registered: March 2007
Location: Saint-Maur, France, https...

Senior Member
Account Moderator

Increase streams pool size, decrease streams time processes wake-up but Streams is slow anyway.

Regards
Michel

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Re: Slow Perfomance In Oracle Streams [message #401667 is a reply to message #401664]

Wed, 06 May 2009 01:28

amitchhabra1981
Messages: 12
Registered: December 2008
Location: NOIDA

Junior Member

Hi Michel,

our database have SGA of 1.2Gb out of this 300MB is alocated for streams pool size and also parameter _job_queue_interval is set to 1. still we are facing delay in response on target database

Regards,
Amit Chhabra

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Re: Slow Perfomance In Oracle Streams [message #401677 is a reply to message #401652]

Wed, 06 May 2009 02:15

cmdeepak
Messages: 1
Registered: September 2008
Location: Mumbai India

Junior Member

hi,

Check job_queue_processes.

Regards,
Dc

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Re: Slow Perfomance In Oracle Streams [message #401684 is a reply to message #401677]

Wed, 06 May 2009 03:05

Michel Cadot
Messages: 68763
Registered: March 2007
Location: Saint-Maur, France, https...

Senior Member
Account Moderator

Also check aq_tm_processes and decrease propagation schedule.

Regards
Michel

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Re: Slow Perfomance In Oracle Streams [message #401708 is a reply to message #401684]

Wed, 06 May 2009 04:01

amitchhabra1981
Messages: 12
Registered: December 2008
Location: NOIDA

Junior Member

Hi Michel,

aq_tm_processes is set to 2 in current setup and please let me know how to reduce propogation schedule?

Regards,
Amit

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Re: Slow Perfomance In Oracle Streams [message #401724 is a reply to message #401708]

Wed, 06 May 2009 04:36

Michel Cadot
Messages: 68763
Registered: March 2007
Location: Saint-Maur, France, https...

Senior Member
Account Moderator

DBMS_AQADM.ALTER_PROPAGATION_SCHEDULE

Regards
Michel

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Re: Slow Perfomance In Oracle Streams [message #403541 is a reply to message #401652]

Sat, 16 May 2009 13:30

gkrishn
Messages: 506
Registered: December 2005
Location: Putty a dark screen

Senior Member

might be due to delay of LOGMINER in scanning redos ?

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Re: Slow Perfomance In Oracle Streams [message #403956 is a reply to message #403541]

Tue, 19 May 2009 17:19

varunvir
Messages: 389
Registered: November 2007

Senior Member

Your stream pool size is very small.
As suggested by Mr Michel,Please increase the size of streams_pool_size or increase the
size of sga_target to higher value and enable ASMM(set stream_pool_size=0 in that case) as your first step.
Regards,
Varun Punj

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