There is 1 or 2 msg server for ABAP+Java system?

Hi, all:
I am confused by the number of msg server processes in ABAP+Java system.
We are running on Windows/Oracle platform.
There are 2 msg_server.exe at OS level. So it looks one of them belongs to the central instance and one of them belong to the central service of the Java stack. Am I correct? I've heard that even for an ABAP+java system, there is only one msg server. Which one is correct? Please share your opinion, thanks.

Hi,
There will be 2 MSG servers running in ABAP + JAVA system..
1 for SCS and other for Central Instance.
ENJOY SAP

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We have recently upgraded to ECC 6.0 system and we have been still doing system copy by using backup and restore method. I know its wrong.
which involves below steps , this old methos works fine for ABAP engine and evreything looks ok.But java engine will not work.
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c. Copy the above aft file name line from the source back<SID>.log to target<SID>.log file.
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I am really looking forward to see anybody take some time out to prepare this kind of step by step procedure.
It would be of greate help for all of us for performing system copy with sapinst method.
Looking forward for your support.
Best Regards,
AjitR

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As per the guide you need to do source system Technical Preparations, in that running the export preparation is also one. You need to run this first before you start the export, if and only if export will successful if preparation is successful.
Yes you need to create the export directory to take the export copy of source system, it may be any where in your server. It should be having 6 to 8 GB free space.No need to create the export directory in target system, after export is completed in the source system you copy the export directory to the target system.
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There is 1 or 2 msg server for ABAP+Java system?

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