Db_writer_process and async IO??

we have ORACLE 10Gr2 on Redhar AS LInux server version 4.X. I checked one of database init.ora have following setup:
db_writer_processes = 2
filesystemio_options = asynch
DISK_ASYNCH_IO = true
TAPE_ASYNCH_IO = true
Based on what I know "db_writer_processes " and "filesystemio_options = asynch" are exclusive. Can anyone tell me database will use whiche one?
Thanks.

Based on what I know "db_writer_processes " and "filesystemio_options = asynch" are exclusiveWhere did you get the information these two parameters are exclusive?
HTH -- Mark D Powell --

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Statistics of Sync and Async messages in PI

Hi,
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Does the worbench has any table or Report that will give me the statistics.
Request some pointers on the same.
Thanks ,
Bhanu.

Hi,
Yes, such a report is available in RWB under Performance Monitoring. Simply choose the required time period, and use Display Options to add the Processing Mode (that will say: sync or async). You can also use Performance Monitoring to get more details about these messages.
Hope this helps,
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Hi Experts,
How to do mapping between Sync sender and Async Receiver?
Flow: Sync SOAP Sender Client -> First Async webservice call -> Second Sync webservice call
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Sara

Hello Sara,
Hope these blogs are useful to you..
/people/siva.maranani/blog/2005/05/25/understanding-message-flow-in-xi - Message Flow in XI
/people/krishna.moorthyp/blog/2005/06/09/walkthrough-with-bpm - Walk through BPM
/people/siva.maranani/blog/2005/05/22/schedule-your-bpm - Schedule BPM
/people/sriram.vasudevan3/blog/2005/01/11/demonstrating-use-of-synchronous-asynchronous-bridge-to-integrate-synchronous-and-asynchronous-systems-using-ccbpm-in-sap-xi - Use of Synch - Asynch bridge in
ccBPM
https://www.sdn.sap.com/irj/sdn/weblogs?blog=/pub/wlg/1403 [original link is broken] [original link is broken] [original link is broken] - Use of Synch - Asynch bridge in
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Can processes be both sync and async

Hi,
When creating a BPEL process in JDeveloper, there are two pre-defined templates for synchronous or asynchronous processes. As such, I've been viewing a process as being either synchronous or asynchronous.
However, after a bit of experimentation, I've come to the conclusion that a process can contain both synchronous and asynchronous operations.
Does this sound correct? Should I not be viewing a process as being one or the other, and it is fact the operation that is sync or async?
Cheers,
Toby

Some thoughts on that:
-You can view sync as a special form of async, so each sync process is also an aysnc process. (I'm ignoring the tech diff like two ports, two partnerlinks here)
-You can call sync and async (BPEL-) processes in one process.
-If a process P contains only sync processes, that will make P sync.
-If a process P contains (among others) at least one async processes, that will make P async.
-If you have a async process, you can wrap its invocation with a timeout, making it a sync process.
Roman

Differnce between sync and async webservices

All,
What is the difference between sync and async web services?
Actually i am looking for a web service, which doesn't return a response. is this achievable?
Thanks

SRAVZ wrote:
What is the difference between sync and async web services?from a webservice protocal perspective there is no difference. you still make a request and get a response. the difference is in what the initial response contains. in a synchronous call, the initial response will contain the final result. in an asynchronous call, the initial response will not contain the final result, but may contain some sort of "ticket" which can be used in a subsequent call to get the final result. generally, the client will need to poll the webservice until the final result is available.
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Edited by: jtahlborn on Dec 2, 2012 9:22 AM

Naming sync and async operation

Hi there,
Does somebody know what is the rule for naming the synchronous version of an asynchronous operation (or vice verse)? Also, is the implementation pattern for the Create/Update/Delete/Sync EBO based EBS operations always supposed to be asynchronous request-response (while synchronous for Query/QueryList)?
I know that Process() can be designed as both synchronous and asynchronous, but can the aforementioned have their synchronous version as well (asynchronous for Query/QueryList)?
Regards,
/Miko

839396 wrote:
Dear Friends,
In 11g databgurad ,
I planned to used 2 physical standy once in the same LAN and another in the DR site
I need to have SYNC between primary and Standby 1 which is in same LAN
I need to have ASYNC between primary an standy 2 which is in DR site
Is it possible , if so how do i achieve this?
Because i believe SYNC and ASYNC will be decided by oracle internally based on the Protection mode we choose so in that case
we can't have mix up (SYNC and ASYNC) for standby databases?
Regards,
DBI think John already mentioned how to do, let me derive more .
SQL> alter system set log_archive_dest_2='SERVICE=same_lan SYNC NOAFFIRM VALID_FOR=(ONLINE_LOGFILES,PRIMARY_ROLE) DB_UNIQUE_NAME=<db_unique_name>'
SQL> alter system set log_archive_dest_3='SERVICE=DR ASYNC NOAFFIRM VALID_FOR=(ONLINE_LOGFILES,PRIMARY_ROLE) DB_UNIQUE_NAME=<db_unique_name>'
>
     839396
     Newbie
Handle:      839396
Status Level:      Newbie
Registered:      Feb 23, 2011
Total Posts:      14
Total Questions:      8 (8 unresolved)
>
why all the questions are unanswered? Please close the threads and keep the forum clean. https://forums.oracle.com/forums/ann.jspa?annID=718

Design question - 1 source (sync) -- 2 receivers (sync and async)

Hi All,
What are the options available to design following scenario:
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If I need to use BPM What are the steps to be used in BPM??
Can we do this without BPM?? What is the procedure??
Thx
N@v!n

Ahmad,
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as for the BPM, you dont have necessarily to have transformation steps inside BPM, you can normally perform mappings at interface determination runtime (given that your interfaces are unique for each send step inside BPM). The steps you really need inside BPM are:
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Henrique.

Sync/Async and Async/Sync Bridge in JMS Adapter

Hi,
I have scenarios using both the Sync/Async and the Async/Sync Bridge in the JMS Adapter. In general this works fine. There is just one thing that caught my attention.
In the Sync/Async Bridge, the correlation in JMS is done
JMS Message ID of Reqeust --> JMS Correlation ID of Response
In the Async/Sync Bridge, it is done
JMS Correlation ID of Request --> JMS Correlation ID of Response
which seems strange as I would have expected to work the same for both ways...
I'm following exactly the setup described in the 'How-to correlate JMS' guide.
Has anybody experienced the same thing or am I missing something important here?
thanks for your help
regards,
Peter

Hi,
If I get it right the MQ queue gives a response message back to XI. The message looks okay on MQ queue, but in XI it's empty.
So I guess the problem must be within the channel that picks it from MQ queue. Did you configure any modules in it that might screw up the content? Is the the message empty as soon as it arrives in XI adapter engine? Pls. check in RWB Monitoring or End-to-End monitoring.
Do you have other channels that pick up messages from that or another MQ queue which do not show such an error? Are they configured exactly the same way?
Regards,
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Correlation and Async/Sync Communication using JMS adapter without BPM

Hello
1. Pls explain with simple example docs/links --- Correlation
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Pls explain -- Correlation Settings, select XI Conversation ID as jMSCorrelationID.
Can you pls explain me this example with JMSMessageID and JMSCorrelationID context
Regards

Hi Henry,
For Correlation, please go through the below link.
/people/sravya.talanki2/blog/2005/08/24/do-you-like-to-understand-147correlation148-in-xi
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Sync / Async communication without BPM in JMS : /people/venkataramanan.parameswaran/blog/2007/01/18/syncasync-communication-in-jms-adapter-without-bpm-sp19
/people/henrique.pinto/blog/2007/08/02/syncasync-scenarios-without-bpm
Hope these help
Regards
Kiran..

Sync and async bpel process

Hi,
I was reading about the synchronous and asynchronous process in the forum, I have also some similar problem.
some of my questions are:
If suppose my BPEL process is going to take around 2 mins or more to finish , then I cannot chose synchronous BPEL process as the default timeout is 45sec and not recomend to increase the time.
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Hi James,
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Do you have any idea how we can get the response back if we are calling the asyn process outside the SOA server, say from PL/SQL or Java API. PL/SQL can call the sync process and get the response back but in case of async process it returns null as the callback response of async not send the response to database. Is this possible with java api, any link or sample which illustrate this or any step suggestion. Actually I am trying to call the BPEL process from Oracle Apps R12 E-Business suite.
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Sreejit

Doubt about Sync and Async process

hi experts i have one small doubt
if we r having the scenario like file to rfc
iam passing the input parameter like material number through file adapter
and then i want to get the material details response from rfc sap r/3 to file system
this is the scenario.
now here which is the synchronous processs
and which is the asynchronous process
please let me know
clear my doubt with explanation please......
thanks
giri

Hi Sesha,
For information on sync/async please refer:
<a href="http://help.sap.com/saphelp_nw2004s/helpdata/en/43/65d4dab39b0398e10000000a1553f6/frameset.htm">http://help.sap.com/saphelp_nw2004s/helpdata/en/43/65d4dab39b0398e10000000a1553f6/frameset.htm</a>
<a href="http://help.sap.com/saphelp_nw2004s/helpdata/en/83/d2a84028c9e469e10000000a1550b0/frameset.htm">http://help.sap.com/saphelp_nw2004s/helpdata/en/83/d2a84028c9e469e10000000a1550b0/frameset.htm</a>
Regards,
Subhasha ranjan
Message was edited by:
Subhasha Ranjan

Facing problem when using SYNC and ASYNC bridge in ID

Hi all,
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In interface determination it is showing error duplicate interfaces in ID test configuration , when i loading the Interface mapping for the same.
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Give me solution how should i do the Interface determination and receiver determination.
Please help me any one .
Thanks in advance,
Manohar.
Edited by: Manohar S on Feb 28, 2008 9:50 AM

Sorry for delay.
Tough question.
Oracle® Database High Availability Best Practices 11g Release 2 (11.2) E10803-01 August 2011
Under "5.1.8 Set LOG_BUFFER Initialization Parameter to a Minimum 8 MB"
States :
"If you are using Oracle Data Guard with asynchronous redo transport, you may need to increase the value of the
LOG_BUFFER parameter to avoid disk I/Os to online redo logs."
Nothing about "Synchronous".
I agree with you on Oracle Support Note 951152.1, its vague.
Additional links on the subject
This also seems to imply :
http://joordsblog.vandenoord.eu/2010/08/data-guard-optimizing-async-redo.html
So does this ( With ASYNC, increase log buffer size if necessary )
http://www.oracle.com/technetwork/database/features/availability/316925-175283.pdf
This one has a very nice Synchronous and Asynchronous compare.
http://www.datadisk.co.uk/html_docs/oracle_dg/architecture.htm
New Zealand, Someday I may have to travel there.
Best Regards
mseberg

Multimapping synchronous webservice and async idoc

Experts,
I have a scenario where the sender is webservice (soap) and receiver is IDOC (async) + SOAP (sync)
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Map 1 -> SOAP <-> PI <-> IDOC
Map2 -> SOAP <-> PI <-> SOAP
Best Regards,
Pavan

However if i do make use of BPM then the idoc that will be returned from SAP to PI will be different since the same idoc
cannot send data back.
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Is there a way we can setup some sort of correlation to make sure that the new idoc that is triggered after the sales order
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Regards,
Abhishek.

Standby Database Configuration with LGWR and ASYNC

Hi,
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async=2000'
The system is handling a lot of very small transactions, not
involving large amounts of data.
My questions are:
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like the one above?
- Does a larger ASYNC buffer influence the latency in copying
changes from the production database to the standby database -
will it buffer more changes before sending them to the standby
database?

Murlib,
I have few more doubt-
Our requirement is to configure a Standby( Physical-MAXIMUM PERFORMANCE
mode) in a place, which is 600 KM away from our primary destination.
Currently our LAN network traffic rate is 100 Mbps. but this traffic is
virtually reduced to 1Mbps out side our LAN.
Our Production Database is 24X7 and Its generating 17 GB Archive files every
day.
Since the net work traffic is slow i think, it will create some log gaps,and
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We are configuring a Standby, here inside our LAN in Managed Recovery Mode
for recovery purpose and will keep a Standby there in remote place for
Reports.
and it will be recover it in every morning.If iam following this procedure,
my
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inside our LAN and should be in MANAGED RECOVERY mode)
and i need to configure the parameters for standby in my remote location.So
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Shall i need to configure "log_archive_dest_n" in the parameterlist of my
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thrrough Oracle Net
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i think the following parameter should be there -
FAL_SERVER
FAL_CLIENT
DB_FILE_NAME_CONVERT
LOG_FILE_NAME_CONVERT
STANDBY_FILE_MANAGEMENT=AUTO
STANDBY_ARCHIVE_DEST
Thanks and Regards,
Raj

Gluegen and async functions

Is there a way that I can indicate in my .gg file that I want a function to be async?
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Thanks

Easy! Just put async keyword:
async public function myfunction():void

Db_writer_process and async IO??

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