Enqueue server question

I was wondering i someone can help me by answering the following question:
In the enqueue server, do you receive a exception in the following scenarios?
1.You try to read a object/item which is already being read by other resource?
2.You try to write a object/item which is already being read by other resource?
3.You try to read a object/item which is already being written by other resource?
Thanks for your help

Hi John,
So, it depends e.g. on the type of lock that is acquired. For more information please check the <a href="http://help.sap.com/saphelp_nw04/helpdata/en/f4/670f9b9d62f94db4ea7361b34ea214/frameset.htm">Enqueue Server documentation</a>.
HTH!
-- Vladimir

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1. in Dual Stack, normally you have ABAP Stack and SCS Central service Instance. ABAP Instance has Message server, SCS has it own Message server and enqueue server. ABAP instance doesn't have enqueue server, because the SCS already has enqueue service
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Regards,
Vincent

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When you de-couple the Central Instance for ABAP, you will get enqueue server and message server for ABAP as part of ASCS. That provides enqueue and message server functionality for ABAP portion of you Add-In system.
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We are very sorry that the SP3 download is delivered in an installation state that consumes more memory then it really needs. To solve this issue you can change some values in the profile CE1_SCS01_<hostname> in directory C:\usr\sap\CE1\SYS\profile (for an installation with standard values).
Please go to the following section and change values accordingly with a standard editor:
SAP Enqueue Server
enque/serverinst = 01
enque/table_size = 8000
ipc/shm_psize_34 = 0
enque/server/max_query_requests = 1000
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BR,
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BR, Oliver

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What are the key benifits of have a standalone enqueue server. I also heard about replicated enqueue server too. what is this. please tell me about both . i.e. advantages and desadvantages

Hi Muhammad,
Read,
http://help.sap.com/saphelp_nw2004s/helpdata/en/36/67973c3f5aff39e10000000a114084/frameset.htm
and,
http://help.sap.com/saphelp_nw2004s/helpdata/en/de/cf853f11ed0617e10000000a114084/frameset.htm
regards
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Thanks in advance.

No.
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Regards,
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Hello to everyone.
We are currently running a SAP system on Netweaver 7.0 and plan to put in place a high availability solution based on replicated enqueue server.
I would like to have my enqueue server on one site and the replicated enqueue server on a another site, 50 km away from the first one.
What are the minimal network requirements to ensure the replication would work without any problem: throughput and overall latency ?
According to your experience, does separating the enqueue server and the replicated enqueue server with 50 km makes sense ?
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Best Regards to all.
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Dear Pascal,
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Best Regards,
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[email protected]

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Enqueue server question

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