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| FileOutput FTP and GDG |
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| cwazpitt3 |
 Posted: Tue May 22, 2012 8:46 am Post subject: FileOutput FTP and GDG |
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Acolyte
Joined: 31 Aug 2011
Posts: 61
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| Hi, I am using MB v7.0.0.2 and wondering if there is any way to do an FTP with a GDG+1 (Generation Data Set) to a mainframe? I don't think it is a built in feature of the FileOutput node, but I wanted to check with the experts. Has anyone come up with a good way to implement this such as a JCN or Shell Script (called via JCN)? Just trying to come up with a good solution. Seems like something MB should be able to handle...maybe in a future release. |
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| mqjeff |
| Posted: Tue May 22, 2012 8:50 am Post subject: |
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Grand Master
Joined: 25 Jun 2008
Posts: 17447
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The FTP capabilities in File nodes will likely only ever support FTP standard mechanisms.
So the question is not "how do I write a new GDG from Broker using FileOutput", the question is "what mechanism does the mainframe FTP server provide for indicating that a file should be put into a +1"?
It's been a long time since I've done FTP to mainframe GDGs, but I seem to recall it was as simple as putting "(+1)" at the end of the file name or something similarly straight forward. |
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| cwazpitt3 |
| Posted: Tue May 22, 2012 8:59 am Post subject: |
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Acolyte
Joined: 31 Aug 2011
Posts: 61
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I'm also not an expert here, but I don't think it is just that easy. I think there are some site commands that also need to be setup that set the record size and other properties. I did find this http://www.ibm.com/developerworks/websphere/library/techarticles/1105_subrahmanyam/1105_subrahmanyam.html that claims to solve the problem, but I don't see what was done as a "complete" solution. Meaning in the JCN node code, he does not address the dataset name, which to me means it is missing something (or maybe I am just an idiot  ). In any case, the shell script referenced at the top shows the use of the site commands:
| Code: |
nsubrahm@nsubrahm:~$ ftp big.blue.server
Connected to 0.0.0.0.
220-TCPFTP1 IBM FTP CS V1R12 at big.blue.server, 10:03:31 on 2011-03-16.
220 Connection will close if idle for more than 5 minutes.
Name (0.0.0.0:nsubrahm): USERID0
331 Send password please.
Password:
230 USERID0 is logged on. Working directory is "USERID0.".
Remote system type is MVS.
ftp> [b]site RECFM=FB LRECL=100 BLKSIZE=27900[/b]
200 SITE command was accepted
ftp> [b]put Messages.csv 'A.TEST.GDG(+1)'[/b]
local: Messages.csv remote: 'A.TEST.GDG(+1)'
200 Port request OK.
125 Storing data set A.TEST.GDG.G0003V00
250 Transfer completed successfully.
336887 bytes sent in 1.17 secs (281.2 kB/s)
ftp> bye
221 Quit command received. Goodbye.
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These lines are what I think I need to reuse...
site RECFM=FB LRECL=100 BLKSIZE=27900
put Messages.csv 'A.TEST.GDG(+1)' |
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| Vitor |
| Posted: Tue May 22, 2012 9:06 am Post subject: |
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Grand High Poobah
Joined: 11 Nov 2005
Posts: 26093
Location: Texas, USA
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| cwazpitt3 wrote: |
| I'm also not an expert here, but I don't think it is just that easy. I think there are some site commands that also need to be setup that set the record size and other properties. |
No, it should be that easy. When the GDG is defined RECFM & LRECL should be specified & IIRC any DCB parameters are ignored in preference of those for any new generation. Depending on how the site's DASD is controlled (SMS or otherwise) BLKSIZE may be used as a guideline or ignored completely.
| cwazpitt3 wrote: |
These lines are what I think I need to reuse...
site RECFM=FB LRECL=100 BLKSIZE=27900
put Messages.csv 'A.TEST.GDG(+1)' |
I think you're right. I think you only need the put command, but (as I indicate above) there's no harm specifying the others. Worst case you'll get a warning about incompatible DCB if they don't match.
The problem will come if the GDG has an LRECL of 100 & Messages.csv does not....
_________________
Honesty is the best policy.
Insanity is the best defence. |
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| mqjeff |
| Posted: Tue May 22, 2012 9:10 am Post subject: |
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Grand Master
Joined: 25 Jun 2008
Posts: 17447
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Yeah, I'm not sure if the site command is strictly necessary or not.
I know there's been mention at various points about allowing the file nodes to specify Site commands, but I'm not up to date on what's been done or not.
The put statement shows that indeed, you just need to add "(+1)" to the end of the file to tell the mainframe ftp server to create a new GDG. So you might try that just off the cuff with the name you send or configure on the FileOutput node remote name. |
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