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| Linux on Intel CCSID |
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| PeterPotkay |
 Posted: Tue Jan 31, 2006 6:28 am Post subject: Linux on Intel CCSID |
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Poobah
Joined: 15 May 2001
Posts: 7722
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MQ servers are running 32 bit RedhatEnterprise Server 3, Update 5, on Intel processors. MQ Version is 6.0.0.
I noticed that 6 of the 7 QMs have a CCSID of 1208, and one of them has a CCSID of 437.
#1. How/when is the QMs CCSID determined? We never explicitly changed it via ALTER QM.
#2. Is 1208 a valid CCSID for a Linux QM?
#3. How could one of them get 437, a Windows CCSID?
#4. We haven't noticed any problems. Yet. How is that one Linux QM with a Windows CCSID working happily for 3 months in production?
#5. Should I alter these to another CCSID?
#6. Wasn't there some list in one of the manuals that list all the various O/Ss, and what their default and possible CCSIDs were? (i.e. Windows=437, Solaris=819, z/OS=500, Linux Intel=???)
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Peter Potkay
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| fjb_saper |
| Posted: Sun Feb 19, 2006 9:32 am Post subject: |
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Grand High Poobah
Joined: 18 Nov 2003
Posts: 20756
Location: LI,NY
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Peter
Did you ever find an answer to this question?
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| PeterPotkay |
| Posted: Sun Feb 19, 2006 4:01 pm Post subject: |
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Poobah
Joined: 15 May 2001
Posts: 7722
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All the servers were exactly identical from an O/S perspective, so the only thing we can think of is that when we originally built this QM, the MS03 script we used was from a Windows QM we were replacing. On this one QM, we must have forgotten to remove the QM parm for CCSID, which was 437 from the Windows QM. So the QM was originally built as 1208, and then 5 minutes later, it was changed to 437 by the MS03 script we used.
It was never a problem, because all the apps that use it are MQ Clients, and they use the CCSID of the client platform when doing their PUTs and Gets with Converts.
It was odd that when I started looking at the various system queues, some of them had system messages with 1208 as the CCSID, and others had 437.
The 1208 was originally choosen by MQ because the LANG (is that the right name???) variable was set to UTF-8 on the OS, which = CCSID of 1208.
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Peter Potkay
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| Tibor |
| Posted: Mon Feb 20, 2006 1:45 am Post subject: |
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Grand Master
Joined: 20 May 2001
Posts: 1033
Location: Hungary
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Peter,
For question CCSID 819/437/1208: these ASCII based codepages are transparent (theoretically) because the range 00-7F is identical and MQ's internal constants contains only the original ASCII characters. Just look the manuals about the naming conventions.
#1: it is inherited from NLS
#6: my recommendation: settings of variable LANG to "C" (=437)
Tibor |
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